CN102788992B - Method and apparatus for earthquake data acquisition - Google Patents

Abstract

Method and apparatus for earthquake data acquisition.A kind of offshore earthquake method for surveying and system, including: continuous recording independent sub-sea vessel, it is characterized in that it has shallow section casing.External buffer pad is used for promoting seabed to couple and preventing fishnet to be wound around.Each container is to utilize softness, non-rigid, and non-conductive cable is fastened together to control the deployment of container.Disposing from the deck of ship and fetch container, this deck is configured to have storage system and processing system, can operationally make container be fixed on cable.Storage system is that the jukebox formula having groove configures, and wherein each container is left in groove randomly, can carry out extracting data, charging, the operation tested and synchronize under conditions of being not switched on container.Container can comprise inertial navigation system to determine sub sea location and the rubidium clock of timing.This system comprises mathematical gimbal.Cable can comprise shearing coupling, and it is designed to when cable tension reaches certain level automatically shut off.

Description

Method and apparatus for earthquake data acquisition

The application is filing date JIUYUE in 2004 21 days, Application No. 200480044393.0, invention entitled " is used for The method and apparatus of earthquake data acquisition " divisional application of a case.

Technical field

The present invention relates to seismic prospecting field.Specifically, the method and apparatus that the present invention relates to seismic prospecting, more specifically Ground is said, the offshore earthquake that the present invention relates to the use of seabed sseismograph system is detected.

Background technology

Seismic prospecting typically utilizes the source of seismic energy to produce an acoustical signal, and this signal spreads into soil and by earth's surface Under seismic reflectors (that is, interface between lithology layer or fluid layer under earth's surface, is characterized in that there is different elasticity) partly Reflection.It is positioned at earth surface or the detection of neighbouring seismicrophone and records the signal (referred to as " seismic reflection ") reflected, Thus the seismic prospecting under producing earth's surface.It is then possible to process the signal or seismic energy data being recorded, can produce relevant The information of lithology earth's surface formation, thus identify these features, such as, the border of lithology earth's surface formation.

Typically, seismicrophone is laid an array, and wherein seismic receiver array is to be distributed by along a line List string receptor constitute, in order that recording the seismic profile of below this line receiver.For data over a large area and shape Become the three dimensional representation of thing, it is necessary to arrange abreast and go here and there receptor more, therefore, form a receptor grid.Generally, in array Receptor be away from each other.Such as, in the seismic prospecting of land, can dispose hundreds of to several according to the mode of different spaces Thousand receptors being referred to as geophone, such as, typical grid configuration, the most often string receptor extends 1600 meters, often There is a detector every 50 meters, be in succession spaced apart 500 meters between each string.In marine exploration, the pull-type of receptor is had to float Cylinder, they are referred to as hydrophone, can be up to 12000 meters after being connected to tow vessel.

In general, several receptors connect into parallel-to-serial combination, form single receptor group on single twisted-pair cable Or pipeline.In data-gathering process, from the output of each pipeline by digitized and record, for analysis subsequently.These Receptor group is typically connected to cable, for the data that are collected with communication the transmission of receptor to the note being in center Record instrument.More specifically, when carrying out this detecting on land, the Wireline telemetry technology of data transmission is used for passing through cable bond Detector cell.Other system utilizes the wireless method that data are transmitted, and therefore, each detector cell is not to interconnect 's.Before data are extracted, other some systems temporarily store these data.

Although the basic process of detection and record seismic reflection land with at marine environment under be identical, but ocean ring There is the problem of some uniquenesses in border, has substantial amounts of water this is because cover at the earth's surface, and most significantly, high pressure deep water is movable The corrosive environment movable with saline.Even if additionally, it is also complicated for simply disposing and fetching, because various operation must be on ground Shake is detected and is carried out under the deck of boats and ships, and the most such as wave, the foeign element of weather and the confined space etc. can largely effect on this Plant operation.

In a common offshore earthquake method for surveying, seismic operations is to carry out on the surface of water body.Ocean goer In oceangoing ship towing floating drum, embedment is for detecting the hydrophone of the reflected energy by water column.Floating drum is typically by hydrophone string, other Electric conductor and for provide approximation neutral buoyancy material constitute.The floating drum made swims on the water surface.Identical or other Similar marine ship towing sonic energy source, such as, air cannon, emission energy pulse, migrate into downwards earth's surface rock under water Property formation.

The system being placed on seabed is also used for many years.This device normally referred to as " OBC " (submarine cable) or " OBS " (submarine earthquake meter) system.Prior art uses three groups of major type of undersea devices with the earthquake letter measuring on seabed Number.The first type equipment is OBC system, is similar to pull-type floating drum, and it is by comprising geophone and/or hydrophone Cable is constituted, and is laid on seabed, and wherein detector cell is to interconnect with cable telemetry.Generally, cable disposed by earthquake boats and ships Leave fore or stern, and fetch the cable of boats and ships end opposite.This OBC system can have what cable actual disposition produced to lack Point.Such as, when disposing three-dimensional geophones, because cable and couple sedimentary with on seabed of geophone are not hard Solid, horizontal movement outside precipitate, such as, flow in seabed, can cause the signal of mistake.In the case of this is identical, Due to its elongation type structure, when attempting to record shearing wave data, OBC system is only having satisfied coupling along the main shaft of cable Close.Furthermore, it is necessary to use three ships to carry out this operation, in addition to source of seismic energy boats and ships, also have and dispose institute for cable The special equipment boats and ships needed, and for recording required independent boats and ships.Record boats and ships are typically to be stably mounted to cable, and portion Administration's boats and ships are typically to dispose with receptor line and fetch cable to make constant motion.Because record boats and ships have constant reality with cable Border contacts, and needs the position making great efforts to keep boats and ships, and fluctuation is made and the strength of ocean current can produce the biggest tension force in cable, from And increase fracture cable or equipment failure, and introduce the interference signal probability to cable.Finally, this cable system has very High capital investment and expensive operating cost.

The second class record system is that OBS system, wherein sensor device and electronic installation are cast anchor on seabed.Should Device makes signal digitized and generally utilizes cable transmission data to be fixed to, to radio unit, this radio unit, the electricity cast anchor Cable also floats on the water surface.The transmitter unit floated transmit data to record on the above water craft of geological data.Visit in earthquake In looking into, it is usually deployed multiple transmitter unit.

The third type seismic recording devices is the OBS system of referred to as submarine earthquake monitor (SSR).These device bags Containing the sensor device sealed and electronic installation, and record the signal on seabed.The retrieval of data is by fetching on seabed This device.This device is typically reusable device.The present invention's it is important that SSR type OBS system.

SSR type OBS system generally comprises one or more geophone and/or water listens sensor, power source, earthquake number According to monitor, crystal oscillator clock, control circuit, and the geophone having gimbal and record is being utilized to shear data cases Under, also include compass or gimbal.In addition to by cable from outside offer power, the usual set of cells of power source.Existing When technology OBS system utilizes on-board batteries rather than external cable to provide power, prior art battery is lead-acid battery, alkali electricity Pond or non-rechargeable battery.The OBS system of all prior aries usually requires that, it is possible to open various unit to carry out each Plant and safeguard, quality control and data extraction activity.Such as, from prior art unit, data demand is extracted, it is possible to open or tear open Unload unit to extract data.Again it is necessary to open this unit to replace old and useless battery.

About the timing function of OBS system, between the timing and the triggering of the source of seismic energy of sensing data it is synchronization Important, in order that making seismic origin event mate with reflection event.In the past, OBS system uses various crystal oscillator clock always To realize this function.Crystal oscillator clock is relatively cheap and accurate.But, a shortcoming of this prior art clock is, Clock crystal is affected by gravity and temperature.The impact of this gravity and temperature can make oscillator frequency generation frequency displacement, from And cause the error of geological data.Additionally, due to crystal is affected by gravity, the orientation of OBS system can affect clock Run.Owing to clock is typically fixed in OBS device, in order to make OBS system have correct taking on seabed during proper orientation To, the OBS system any misorientation on seabed can cause the inaccuracy of clock.Finally, this clock often has drift Moving and the feature of time shift, this causes due to variations in temperature and timeliness, and it equally causes being recorded geological data not Accuracy.Although the data that can obtain aging at temperature and time shift carry out mathematics correction, but the device of prior art can not Revise the gravity impact on crystal clock.At most, prior art is only capable of revising the temperature impact on crystal clock.

Relatively modern OBS system can also comprise the machinery for correcting inclination, i.e. gimbal.Gimbal is this Sample one device, it allows to make along one or more directions angular movement freely, and can be used for determining that OBS system is on seabed Orientation.The orientation data that gimbal produces can be used for adjusting the geological data of geophone record.Often utilize in prior art In the case of flatrack, they are often as a part in geophone, referred to as " normal flat geophone ".These One shortcoming of prior art machinery gimbal is the limited angle orientation that this device is allowed.Such as, at least one existing skill Art device allows gimbal to have the rotation of 360 °, but the angle of pitch of gimbal is limited only to 30 °.In this device, in order to enable Making this prior art gimbal correctly run, OBS system itself have to be parked in the basic ideal position on seabed.In order to Making OBS system is not the most to be orientated in the horizontal direction, such as, faces upward or downward, and the mechanical gimbal of prior art is just Can not normally work.Other gimbal devices of engineering properties are not limited to 30 °, but, at this machinery gimbal device In, the mechanical damping in this device can destroy the fidelity being recorded signal.Finally, the gimbal device of geophone is Expensive, and ratio do not has the geophone of gimbal to require more space.Utilizing the OBS system of multiple geophone In system, due to its size and space requirement, it is unpractical for installing gimbal to geophone.

About orientation, OBS system location on seabed is for correctly explaining that the geological data of this system record is must Need.The accuracy of processed data is partly dependent on processing the accuracy of location information used by these data.Due to routine Positioner, such as, GPS, it is impossible to work under water environment, sets up the conventional, prior art side of OBS system location on seabed Method comprises sonar.Such as, in sonar system, OBS device can utilize pulse signal to determine its position.Any In the case of, the accuracy of processed data depends directly on the setting accuracy determining OBS system.Thus, it is desirable that We need to utilize such method and apparatus, and it produces and positions information reliably.Similarly, we also need to guarantee can be real Existing OBS device expection location on seabed.

About the operation of above-mentioned OBS system, prior art systems usually requires that some outside control commands produced, for It is the data starting and obtaining shooting every time.Therefore, seismic receiver units must be physically connected to central control recording station or " connection " can be carried out by wireless technology.As it has been described above, professional is it will be observed that some environment to connecting and can control The conventional method of detector causes the biggest challenge, such as, crowded or deep sea area, rugged alpine region and jungle.? All difficulties can also occur in some cases, be wherein periodically required to mobile receiver array to cover bigger region.

No matter it is to utilize actual cable or by wireless technology, the shortcoming that each type of connection has its own.At electricity In cable telemetry system, big array or long floating drum cause substantial amounts of cable laying, and this is expensive, and are difficult to process, portion Affix one's name to or operate.In the case of using bottom cable laying, in the deep water more than 500 feet, the environment of corrosion and height Pressure generally require costliness cable protective outer jacket.Additionally, the cable laying of routine also needs at cable and sensor unit Between have reality connection.Utilizing rigid line to connect sensor on cable the most unpractical, more common technology is profit Cable is made to be connected with sensor by the external connection between cable with sensor.This connection between cable and sensor is Fragile especially, particularly under the marine environment of corrosion and high pressure.Certainly, utilize the system linked together by cable, Thering is provided power to sensor, make between sensor with shooting time and sensor is synchronization, and to control sensor be ten partial volumes Easy.

It should be noted that, no matter be cable or wireless system, wherein need the sensor laying external cable to connect equipment Device and the record in this unit and/or telemetering gear, there is many above-mentioned shortcomings in it.Specifically, existing skill The OBS system of art includes being arranged on separate detection and record/radio telemetry cell arrangement on carrier.Separate unit has The aerial lug linked together by cable, they have the problem identical with the cable of the central authorities' control on the water surface. Between each detector unit, i.e. geophone, and remaining circuit part, separate main cause is, therefore, to assure that earthquake is examined Ripple device is effectively coupled to seabed.

In the case of the operation utilizing wireless technology or sensor is by pre-programmed, the control of sensor becomes more Difficulty.Such as, it is ensured that record operation is highly important with shooting Timing Synchronization, because each sensor is not over wire even It is connected together.It is therefore desirable to have above-mentioned onboard clock accurately.At this on the one hand, the excitation of suitable time for detection and Each unit of record must be Tong Bu with shooting.Guarantee that unit has enough power to be also our problem of interest.Permitted The patent of many prior aries is concentrated and various technology and mechanism is discussed, for give during data collection and record sensor power with And during dormancy the power supply of closure sensor.

It has been proposed that various measures are to overcome above-mentioned shortcoming.Such as, at US Patent No.5, in 189,642 A kind of submarine earthquake monitor is described.This patent discloses a long setting frame, and it is the horizontal annular separated by space Plate is connected and composed by vertical support frame part.Each frame member is to be made up of the most nested pipe, and utilizes clamp machine Structure is fastened to each other.Balance ring is detachably fixed to lower flat board.Geophone device is again secured to lower flat board.Foam buoy is solid Surely upper flat plate is arrived.Control device to downwardly extend from upper flat plate.Control installation power source in device, seismic data recorder device, sieve Dish and control circuit.Outside hardware circuitry connects control device and geophone.This system does not utilize any hard wired communications Link is to monitoring station, sea, but utilizes sound or pre-programmed means to control this unit.When being discharged in water, it is assumed that balance Ring can provide enough quality, is used for keeping this system to erect and couples geophone after sinking to seabed.In order to Reduce the geophone noise contributions of ripple or water movement generation to buoy and the probability of control device, once this system coupling Close seabed, discharge the clamp mechanism of each support, thus allow to control device and slide up to nested support with buoy, make ground Other parts isolation of shake cymoscope and this system.Once complete earthquake record, release balance ring from frame, and this system exists The water surface can be risen under the positive buoyancy effect of static organ.Acoustic transformer, radio beacon and flash lamp can be used for positioning and taking Return this system.

Another kind of marine seismic data record system described in the US Patent No.6,024,344.This patent describes one Plant the method disposed in deep water and position seismic data recorder.On above water craft, data logger is fixed to be deployed in Semi-rigid wire in water.Due to the rigidity of wire, its function is to determine one between monitor and the wire sinking to seabed Individual fixing interval.This wire can also be given between adjacent monitor and provide the merit of telecommunication between monitor and boats and ships Rate and signal.Once monitor is placed in place, and they are the clocks being predetermined or utilize by water or pass through wire The control signal excitation of transmission.After data collection is complete, wire and monitor are fetched.Deployment is to utilize to be placed on waterborne vessel Cable machine on oceangoing ship completes.As shown in the Fig. 1 in ' 344 patents, when boats and ships are to move along the direction leaving wire and monitor Time, there is the stern at boats and ships in deployment operation.This patent also describes needs mode in order to deposit monitor, in order that It is easy to during data collection dispose and follow the tracks of the sub sea location of OBS system.

GeoPro provides a kind of independent OBS system, i.e. not having the OBS system of cable, it is by the glass of 430mm diameter Glass ball is constituted, and wherein comprises all components of this system, including: battery, radio beacon, seismic data recording unit, Sound release system, deep-sea hydrophone, and three geophones installing gimbal.Glass bead is arranged on the guide rail increased the weight of, It can suppress the buoyancy of glass bead and make OBS system cast anchor to seabed.Geophone is placed on the glass neighbouring with guide rail Bottom ball.In order to recover OBS system after data collection is complete, transmitting sound command signal to glass bead by deep-sea hydrophone Detection.This signal excitation sound release system, it can make glass bead and separate increasing the weight of guide rail be maintained at seabed.At glass bead Positive buoyancy effect under, free floating system rises to sea, wherein radio beacon launch be used for positioning and fetching glass bead Signal.One shortcoming of this specific design is that geophone is not coupled directly to seabed.On the contrary, by seismic detection Any seismic signal of device record must transmit through the bottom of guide rail and glass bead, in this case, this seismic signal warp By above-mentioned noise and other distortion.It should be noted that, this modular design represent in prior art utilize many cylinders and Spheroid form, since it is known that this shape is more effective for standing contingent high pressure under marine environment.

K.U.M. providing a kind of OBS system not having cable with SEND, it is included in the bar at top and forms three in bottom The framework of foot rest.Foam buoyant device is fixed to this bar.One anchor is fixed to the bottom of spider and framework is fixed to seabed. The pressure cylinder being arranged on the spider section of framework comprises seismograph, battery and release system.Hydrophone is fixed to On framework, in order that receiving command signal from sea and encouraging release system.The pivotable gib arm of crane is again secured to On framework, and the gib arm of crane is releasably secured to geophone unit.When disposing, the gib arm of crane is originally maintained at vertically Position, and geophone unit is fixed to the free end of the gib arm of crane.When contact therewith to seabed, the gib arm of crane is from frame Frame stretches out, and discharges geophone unit to the seabed of about 1 meter from frame system.Rigid line allows at geophone list Telecommunication is realized between unit and monitor.Geophone unit itself is the asymmetric disk that diameter is about 250mm, its one Individual side is smooth, and another side is dome shape.There is groove on the tabular surface of geophone unit, and risen Seabed is touched during the release of heavy-duty machine arm.After data collection is complete, acoustical signal excitation release system, it can make anchor with Frame system separates.Foam buoyant device can make frame system and geophone rise to sea, wherein utilizes radio Beacon positions and fetches this system.

SeaBed Geophysical sells the system of OBS without cable of named CASE.This system includes: control single Unit, i.e. electronic installation, and the node unit that interconnected by cable or geophone.Control unit and node unit are installed On long framework.Control unit is a tubular body, and it comprises battery, clock, records unit and transponder/modem, permissible Underwater sound communication is carried out with the water surface.Node unit includes: geophone, hydrophone, dipmeter and interchangeable sleeve, Qi Zhongtao Cylinder is in hydrophone downwardly open cylinder formed below.Node unit is separable with long framework and control unit, but It is to keep the communication with control unit through external cable.The use of this tubular body can represent the design of prior art, because The shell of system is necessarily designed to stand the high pressure that this device is born.During disposing, whole unit drops to sea The end, the most remote-operated vehicle (separate with OBS system) is used for making node unit depart from framework, and makes node unit put Enter to seabed, thus promote the sleeve of opening to enter bottom sediment.Long framework comprises one can be fixed deployment and fetch The ring of cable.Utilize communication converter and modem to control this system concurrency and penetrate geological data to the water surface.

The prior-art devices of each reference has one or more shortcoming of the prior art.Such as, US Patent No.5, the OBS system of 189,642 and the device of GeoPro and K.U.M./SEND are upright systems, and each system has relatively High vertical cross section.Therefore, stood to be applied to the noise that on this device, water sport produces by the geological data of these systematic collections. Additionally, it is observed that the shearing motion that thalassogenic movement produces under this maximum section of passenger flow OBS system can cause OBS system Rock moves, and particularly from the translational motion of the bottom of unit to top, thus reduces the fidelity being recorded data further. Additionally, these prior-art devices are all asymmetrical, therefore, only can there be single orientation their position.Generally, this is By increasing the weight of what one end of OBS carrier realized especially.But, this device may pass through hundreds of foot of sea water and contact To the most rugged seabed, this seabed may spread various fragments.All of these factors taken together can cause system putting There is incorrect orientation when entering seabed, thus affect the operation of this system.Such as, it is by it in this prior art OBS system A side lay in the case of, geophone does not couple with seabed, so that this device is unusable.Additionally, Incorrect orientation may interfere with the relieving mechanism of system, thus destroys the recovery of this system.

The maximum section of passenger flow of these prior art systems is also undesirable, because this unit is easy to be wound onto fishing On line, shrimp-catching net, all kinds cable or other fragment, they may be just in the adjacent domain that earthquake record is movable.

On the other hand, there is more light-gauge prior art systems, such as, submarine cable, often there is weak coupling energy Power or need when placing utilize expensive equipment as auxiliary device, such as, ROV.The elongated shape of submarine cable can be led Cause only have " good " to couple in single orientation, i.e. along the orientation of cable primary axis.Even if additionally, along its main shaft, but due to Between cable and seabed, real contact area is the least, and coupling is subject to because of other barriers near rugged seabed or seabed To infringement.

Another shortcoming of these prior art systems is, needs excitation and deactivates the unit for recording and run. This typically requires a control signal from water surface ship, generally by the sound transmission or by extending to this unit from the water surface Cable.Any kind of external control is undesirable, because it requires signal transmission in systems and additional element. Although the sound transmission can be used for the transmission of some data, but its purpose to realizing synchronizing is the most insecure, because existing Unknown transmission path change.Certainly, any type control signals for transmitting telecommunication number is undesirable, because it increases Cell processing and the complexity of control also need adapter or the coupling of outside.The high pressure detected at bathyseism and corrosive environment Under, this cable and adapter are the sensitiveest for leakage and fault.

Similar problem also appears in more such unit, and they utilize external cable to connect the distribution unit of this unit Part, such as, at US Patent No.5, in disclosed in 189,642 or similar devices, wherein geophone device be with Circuit arrangement is separate.Additionally, in the case of the electronic component of system is distributed, the likelihood of failure of system just increases.

Many prior art systems also utilize radiotelemetry rather than utilize onboard units record data to collect Data.Certainly, this system has the restriction that wireless Charge Transport Properties is forced, such as, the constraint of radio-frequency spectrum special permission, distance Limiting, sight line is blocked, and antenna limits, data rate limit, power constraint, etc..

Those OBS unit utilizing buoyant device to fetch are undesirable, because typical isolator makes this unit increase Add extra-pay and complexity, it is often necessary to carry out encouraging to discharge this system to the water surface.Additionally, this system is generally lost Abandon the unit of part, i.e. the anchor increased the weight of or guide rail, thus make it the fragment on seabed.During disposing, owing to they are Free floating, this system is difficult to the ideal position being positioned on seabed.Although above-mentioned fault is due to the orientation of mistake, But when fetching, despite the presence of radio signal and beacon, the system of free floating is difficult to location and at sea loses.Equally Ground, in the case of high seas, these unit are the most rambunctious, generally to collide, to system with offshore beacon or ship Bring potential danger.

In the case of this is identical, when disposing and fetching, the control to unit is highly difficult.Utilizing rigidity Or in the case of semi-rigid cable system is with fixed range and each record unit of location, this cable is not soft, weight Very big and very difficult operation.This cable is corrected not in when disposing.Such as, as it has been described above, preferably grid layout can To identify the particular location of unit linearly.If layout ship drifts about or makes cable be laid on the position leaving expection straight line Put, then must reorientate the ship on the water surface, return it on that straight line.But, due to the rigidity of cable, cable Location of mistake part can make the every other unit intended straight line of deviation on this cable.

Additionally, the current procedures fetching cable utilization in the prior art easily makes cable by unsuitable stress.Tool Saying, the extensive acceptable method fetching cable from seabed is to return to straight line body, or drives ship to taking at the boat Return on the straight line of cable.This method is undesirable, because have to be finely tuned speed and the speed of cable capstan winch of ship Degree, in order to make do not have excessive tension force or pulling force on cable.This adjustment difficulty often, because various external factor is made Use on ship, such as, wind, wave and current.Tension force or the pulling force that can not control cable can affect pulling whole length electricity Cable and the unit fixed with it, thus damage whole cable and all of unit.Another shortcoming of this method is, if Vessel motions is too fast, and it can cause cable slack, and makes cable floating under ship, can be wound onto the propeller of ship In.

Finally, a kind of quarter deck system for processing above-mentioned OBS unit is not the most described, regardless of it It is depositing or the deployment of unit and fetching of unit.Along with the size of deep water seismic monitor array becomes increasing, need One includes that this array, for effectively depositing, is followed the tracks of, and the system servicing and processing thousand of recorder units becomes more to increase the weight of Want.The above water craft added is expensive, and needs the personnel of operating ship.The personnel added and boats and ships also increase accident With injured probability, particularly under the open sea environment that weather can deteriorate rapidly.

Accordingly, it is desirable to provide a kind of seismic data collection system that need not PERCOM peripheral communication/feed cable, or from On the water surface or at seismic data collection units itself rather than operate any kind of external control signal.In other words, should Unit should run on the basis of " drop and forget ".Similarly, this device should be easily to operate, it is not necessary to Device for opening extracts to complete such as data, the activity that quality control and power supplement.This device also should be designed to be able to hold The corrosion generally existed in being applied by deep water ocean and high-pressure environment.This unit should be configured to reduce the noise of ocean current as far as possible Increase coupling between this device with seabed as far as possible.In the case of this is identical, this device should be designed to there be correct taking To, this device can be made when contacting seabed to have the coupling of maximum, without the auxiliary of the external equipment of such as ROV, and subtract The probability of little incorrect orientation.Similarly, this device should be not easy by shrimp-catching net, and fishing line is wound around.

This device should comprise being orientated insensitive timing mechanism.Similarly, orientation should not affect geophone Often flat operation.

This device should easily be deployed, but also can be placed on certain position of high credibility.Equally Ground, this device is easily to be retrieved, and it need not floating installation or relieving mechanism, and the parts of this unit are not when fetching Should be retained in ocean.Additionally, should have such device and fetch process, it is permissible when connecting the cable of seismic unit Reduce the tension force of potential damage.

It should provide a kind of system being easily processed hundreds of or thousand of recorder unit, this unit includes being deployed in sea An array under the environment of ocean.This system should be disposed, and fetches, and follows the tracks of, keeps and deposit each recorder unit, with This simultaneously, can reduce manpower and the needs of additional above water craft.It is right that this system should reduce during this activity as far as possible The potential damage of various unit.Similarly, needing to comprise various safety device in this system, it can reduce operation recorder The injury of the personnel of unit.

Summary of the invention

The present invention provides a kind of for collecting the system of geological data under marine environment, wherein by disposing multiple continuous works That makees is wireless, independent submarine sensor unit or container, and the feature of each container is symmetrical, shallow section casing, and unique External buffer pad, it is provided that seabed couples and prevents to be wound around by fishing net.Utilize soft non-rigid, non-conductive cable Line, can be fastened to each other between each container, and cable is used for controlling the underwater deployment of container.This container is from marine ship Being deployed on the deck of distinct configuration and fetch, its middle deck has conveyer belt system and processing system, each container is permissible Fix with non-rigid cable and separate.In one embodiment, as the deck configuration of part, each container is to sing with automatic electric Machine mode is left on fluting frame randomly.When leaving in fluting frame, the ground of the former record of this container can be retrieved Shake data, it is possible to this condenser charge, test and resynchronize, and under conditions of need not open container, can restart Its operation.Disposing and fetching period, non-rigid cable and the container being fixed on cable can processed, by means of waterborne vessel The motion of oceangoing ship, forms the probability of tension force in can reducing the cable being deployed.This includes the non-rigid cable system of distinct configuration System, can automatically shear separately when it is designed in cable reach certain tension level.

More specifically, each single sensor unit includes discoid waterproof casing, and this casing is by two Parallel circular flat board is constituted, and is to link together with shallow sidewall at their edge, thus forms an axle pair around plectane The encapsulation claimed, and have the most shallow section relative to the diameter of plectane, its shape is like a wheel.This casing is from internal quilt Supporting, the integrity of casing can be protected under external pressure, and provide solid between unit box and geophone Mechanical couplings.In one embodiment of the invention, this unit has such configuration, and it can couple also effectively with seabed Collecting geological data, no matter which position plectane side is in, thus gets rid of many orientation problems of the prior art.This plectane Ridge, boss, or groove can be comprised, in order that strengthening and the coupling of seabed.

In one embodiment, being arranged around a cushion pad at the shallow wall of this unit, the Cross section Design of cushion pad becomes to compel Making this unit is to be parked on a plectane side of this packaging, thus causes being formed between this unit and seabed close coupling Close.In at least one embodiment, it is provided that cushion design become be possible to prevent this unit by shrimp-catching net or fishing line be wound around.

This unit utilizes several different device for being connected to cable.In one embodiment, each unit comprises one The blocking mechanism of individual bias, it is allowed to this unit is fixed on cable.In another embodiment, fixation clamp is at body side On off-centered position.In another embodiment, fixation clamp is the centre bit of a plectane in the unit forming casing Put.

This unit is independent, and therefore, all of electronic component is arranged in casing, and it includes: multi-directional Earthquake cymoscope Device, seismic data recording devices, power source and clock.

In one embodiment of the invention, clock is rubidium clock.Rubidium clock for temperature or gravitational effect or this unit in sea Orientation at the end is the most insensitive.

In another embodiment, this unit comprises crystal clock and dipmeter.Preferably, onboard units utilizes dipmeter The gravitational effect of crystal clock is carried out real time correction.

The rechargeable battery that power source preferably works in a sealed meter environment, such as, lithium ion battery.

The unit comprising dipmeter can also utilize tilt meter data to complete the various functions beyond crystal clock correction. Such as, a feature of the present invention utilizes tilt meter data to carry out mathematics balance.Specifically, in the present invention, utilize Instrument data, mathematically complete the balance of geophone, and therefore, it is unrelated with the orientation of unit, such as machinery gimbal.

Certainly, tilt meter data can also be used for the position determining a unit on seabed, this be in the prior art through Often utilize this data.But, different from prior-art devices, feature of this invention is that and obtain according to the mode of Time Continuous To and utilize tilt meter data.Starting once at earthquake record, prior art unit mostly just determines the position of unit.But Be, it is observed that the position of unit during disposing it may happen that change because this unit is by such as current, shrimp line Impact etc. external force.Therefore, in the present invention, the tilt meter data of measurement is as the function of time.This is to lead at run duration Cross and repeatedly complete, so, can correct geological data as required.

About inclination, timing or the correction of class likelihood data, these data can affect the accurate of the geological data that is collected Property, all of prior-art devices is that the heart carries out this correction in processes.Not having a kind of prior-art devices is when disposing Or utilize onboard units to make this correction disposing on boats and ships.Therefore, a method of the present invention is to utilize while disposing Onboard units makees this correction.

This unit can also include: compass, hydrophone, sound position transducers, and/or one or more accelerometer.Sieve Dish data provide the reference frame data relative to reference frame, for totally detecting can to each unit.In the present invention one In embodiment, the sensor of such as accelerometer is used for the tracking cell position when descending through water column and resting on seabed. Specifically, this sensor provides inertial navigation data and records x, y and the letter of z location when the transmission of this unit is by water column Breath.This positional information and initial position and velocity information are for determining the final position of this unit.

In another feature of the invention, energized when this unit is on earthquake boats and ships, and once by ocean Being de-energized during pull-out, therefore, it is to obtain data continuously after the time of fetching before deployment time.Similarly, In one embodiment, this unit is to start to record data before being deployed in water.It is energized and before being deployed in water The system starting record is to be stablized before the time needing signal detection.This can reduce the change shape that electronic component runs State interferer signal detection and the probability of record.

In another feature of the invention, seismic data recording devices comprises takeup type memorizer, even if not using Time, record the most continuously.This can be avoided starting or the needs of sign on, so that it is guaranteed that this unit is in the required record time Inside stable, and as the post data being previously recorded, until before data capped till.As long as clock is to synchronize , this recording equipment is ready for disposing at any time.Additionally, such as data collection, quality control test and battery charge Routine operation can carry out under conditions of not interruption logging.In the case of this continuous record unit, this unit can be used On land or under marine environment.

The use of non-rigid cable is another feature of the invention.Although having used rope in prior art very early As the hauling rope of water surface floating earthquake-predictive device, before this, in the case of OBS system interconnects, prior art is the most sharp With rigidity or semi-rigid steel wire rope.Prior art OBS system uses a reason of steel wire cable to be to need circuit to interconnect this to be System.But, in the present invention, using non-rigid cable to be because above-mentioned container and work independently, it need not with outward The communication in portion or connection.The non-rigid cable of the present invention is preferably made up of composite fibre materials, such as, and polyester, and utilize guarantor Protecting property pressing mold covering encapsulates, such as, and polyurethanes casing.In one embodiment, non-rigid cable is by 12 bursts of braidings Polyester core constitute.Rib or groove is had to reduce the resistance in water on pressing mold.

The non-rigid cable of the present invention is also useful in unique dispositions method of container.Specifically, non-rigid cable Line only has slight negative buoyancy force.When cable fixing between the two containers time, the remote negative buoyancy force of each container is much larger than cable Negative buoyancy force, when two containers connected sink by water column, the pulling force on non-rigid cable is far longer than and acts on unit Pulling force, therefore, it can be as drag parachute or brake, so that the decline of container is slowed down and makes container be maintained at vertical position Put.This is especially desirable for must be placed at the unit of specific orientation, such as, has those appearances that asymmetric cushion pad configures Device, because when cable is fixed to the adapter that on top board, center is installed, being passed down through water column at it and rest on seabed process In, its function is to maintain the orientation of unit.Additionally, due to the cable of the present invention is nonrigid, the cable between adjacent container Line is lax.Deck officer can utilize this lax cable, the position that correction declines when deployment container.

Similarly, non-rigid cable can strengthen unique retrieval methods of the present invention, is wherein to drive along cable when boats and ships Time, cable is to be retrieved at the afterbody of boats and ships.So, the pulling force that water produces on cable can make cable decelerate to boats and ships Afterwards, thus reduce and cable is crossed hightension, and guarantee that cable is unlikely wound onto in the propeller of boats and ships.

In one embodiment of the invention, on the deck of earthquake boats and ships, storage system comprises one has multirow with many The storage rack of row groove, this storage rack is arranged to place unit.Each groove comprises COM1, therefore, works as list When unit is placed in groove, this unit is contacted with main control station by COM1.By this port, this unit can be loaded in down The information of upper record, element cell can be electrically charged, and can carry out quality control checking on the unit, can restart note Record operates, and this unit can be encouraged again.In another embodiment of the present invention, storage system comprises the U of overlap Shape carousel.Each conveyer belt comprises roller, it is allowed to record the unit path along carousel according to transmission Band mode is moved, until this unit arrives the neighbouring of COM1.No matter utilizing which kind of storage system, storage system can configure One-tenth has the Container Dimensions of 8 ' × 20 ' × the 8 ' of standard, therefore, it can transport easily with the container ship of standard load Storage system and any seismic unit.

Each unit can comprise the identification device of uniqueness, such as, RF identification (RFID) labelling or similar identification mark Note, when these unit be above deck time be processed time, they can be tracked.Similarly, as it has been described above, each unit Comprise sound position transducers or accelerometer, for determining unit position on seabed.Owing to unit is independent, with Identify that the positional information that labelling is relevant allows these unit to be to be inserted on storage rack randomly, but according to this unit in sea At at the end with front position, it is allowed to retrieval and order arrange the data of multiple unit.Therefore, there is no need to keep these unit is order Arrangement.Unit the most adjacent on receptor line depositing on storage rack needs not to be adjacent.

Additionally, general plan is substantially automatically carry out with fetching unit above deck.Deck configuration include with Storage rack is adjacent and extends to the conveyer belt system of the gunwale adjacent with the water surface.Robotic arm is at storage rack and conveyer belt Between mobile unit.In one embodiment, the cable machine of placement and reeler/case are to decontrol non-rigid cable, In order to make it adjacent with conveyer belt system and in the side of boats and ships.It is fixed to the transmission of non-rigid cable when unit is placed on Time in band system, it is allowed to operationally fix unit.Additionally, professional is not it will be appreciated that the relieving speed of cable is Constant, because boats and ships are not constant by the motion of the water surface, even on right up and down sea.Therefore, in order to keep away Exempting from occur the biggest tension force in cable, it can cause destruction and the entrainment of unit of cable, and in order to make unit accurate Be parked on seabed, constantly adjust and decontrol cable and enter the speed in water, for compensating boats and ships mistake on the water and not Predictable motion.Therefore, it is necessary to adjust the line speed loading the unit being fixed on cable continuously.

In another embodiment of the present invention, conveyer belt is to intersect with the cable decontroled by cable machine.On joining, ground Shake unit is fixed to cable, and the unit fixed is then released in water.Cable clip in fixed station downstream is at unit Catch cable before Gu Ding securely, thus remove the tension force of upstream cable when this unit is fixed to cable.Cable clip is permissible Comprising release system, it requires operator to make with the hands and opens cable clip, thus reduces this operator danger when releasing unit Danger, and to make upstream cable be under tension again.

About the tension force in cable, cable is segmented, and utilizes the device that disconnects of unique design to make each cable Section interconnects.This adapter includes the first assembly parts nested against one another and the second assembly parts.Each assembly parts are fixed to cable One end of section, therefore, when each assembly parts are secured to each other, multiple cable section form one section of longer cable.If cable Tension force in line limits more than the shearing of shear pin, then shear pin just disconnects, and makes cable separately.

Additionally, although one embodiment of the present of invention utilizes clamp mechanism, it allows unit to be directly jammed one On section cable, an alternative embodiment of the invention utilizes the sleeve of fixing cable.Clamp mechanism can fix the shoulder limit that is molded Fixed sleeve.Fixing shoulder between adjacent one section of cable is universal in the prior art, but the sleeve of the present invention is permissible It is jammed or is placed on around one section of cable and fix, without cutting cable.In this embodiment, sleeve is fixed to cable Being by mean of inserting pin on line and pass through sleeve and cable, it is on the x being perpendicular to cable axle and y plane.Shoulder is often The two ends of individual sleeve are embossed on pin.Although the mold pressing on the opposite end of sleeve can be used for limiting fixing along sleeve District, but sleeve can comprise horn mouth, can limit this fixed area further.

Accompanying drawing explanation

Fig. 1 is the profile of seismic recording unit of the present invention.

Fig. 2 is the front view of unit shown in Fig. 1.

Fig. 3 is the rearview of unit shown in Fig. 1.

Fig. 4 is the top view of unit shown in Fig. 1.

Fig. 5 is the rearview of the unit having circular cushion pad section.

Fig. 6 is the rearview of the unit having wedge shape cushion pad section.

Fig. 7 is the top view of the unit having wedge shape cushion pad shown in Fig. 6.

Fig. 8 is the elevation view having radial type unit.

Fig. 9 is the section end view of non-rigid cable.

Figure 10 is the cross sectional side view of shear pin adapter.

Figure 11 is the elevation view of shear pin adapter shown in Figure 10.

Figure 12 is the cross sectional side view of container fixing cable sleeve.

Figure 13 is the elevation view fixing sleeve shown in Figure 12.

Figure 14 is the side view that boats and ships were disposed and fetched to seismic system.

Figure 15 is the quarter deck layout of container sewerage and the container storage system that automatic speeds match is described.

Figure 16 is the side view of jukebox mode storage rack.

Figure 17 is the end-view on deck layout shown in Figure 15.

Figure 18 is the elevation view on deck layout shown in Figure 15.

Figure 19 is the quarter deck layout that semi-automatic container fixed system is described.

Figure 20 illustrates a kind of container retrieval methods on the quarter gone up.

Figure 21 explanation is fixed to multiple unit of non-rigid cable during disposing.

Detailed description of the invention

In the detailed description of the present invention, identical reference number is used to point out identical parts, in order to simplify description, can To omit such as fixture, every parts of assembly parts etc..But, those skilled in the art will understand that, can be used this as required Plant common parts.

Seismic data collection system or the container 10 of the present invention is represented with reference to Fig. 1, Fig. 1.Container 10 is by fluid-tight case Body 12 is constituted, and fluid-tight casing 12 has the sidewall 14 limiting internal waterproof compartment 16.In compartment 16 at least provided with One geophone 18, clock 20, power source 22, controlling organization 23 and seismic data recorder 24.In this embodiment, hold Device 10 is independent container, and therefore, power source 22 can meet all power needs of container 10.Particularly, power source 22 is given The seismic data collection system of deployment underwater provides whole power.Similarly, controlling organization 23 can provide the institute of container 10 Having control function, it need not the control communication of outside.Container 10 has the weight of negative buoyancy force, therefore, when it is disposed in water column, Seabed can be sunk to.

Professional is appreciated that container 10 is independent seismic data collection system, and in order to record geological data, it is not Communication outside Xu Yaoing or control.Shall also be noted that geophone 18 is mounted in container 10, therefore, outside it need not The wiring in portion or connection.It has been proved that utilize example design following detailed description of, geophone 18 can couple effectively To seabed, therefore, will not be interfered by the geological data of container 10 transmission arrival geophone 18 and be destroyed.

Although each basic unit already described above, container 10 can also comprise compass 36 and dipmeter 38.Additionally, In the preferred embodiment, geophone 18 is the detector array being made up of three geophones, for detection along x, y and The seismic wave of each axle in z-axis.Unless specifically described, the geophone utilized in the present invention comprises the seismic detection of routine Device and for detecting other known devices of seismic wave, it includes, but not limited to accelerometer.

In another embodiment of the present invention, it has been found that utilize four the earthquake inspections placed in tetrahedron configuration Ripple device is favourable, and the data in multiple planes measured by each geophone.In the three-dimensional configuration of standard, three earthquake inspections Ripple device is positioned to separated from each other 90 °, and each geophone measures single x, the signal on y or z-plane.Examine four earthquakes In the configuration of ripple device, the orientation of geophone is perpendicular to tetrahedral plane, and therefore, each geophone is measured at x, Y, the signal in multiple planes in z coordinate system.Such as, the earthquake number on x-plane and z-plane measured by a geophone According to.The geophone configuration of four or multiple geophone is preferable, because they seismic detections on specific plane The event of device fault can provide the redundancy of seismic unit.In prior art OBS system, neither one system is to utilize four Individual or multiple geophones detect geological data in this manner.

In a key character of the present invention, clock 20 is rubidium clock.Before this, do not used in seismic prospecting Rubidium clock, the reason of part is, its price is higher than traditional crystal-driven clock.But, because the container of the present invention 10 attempts Can work most effectively in an orientation of several orientations, need to utilize such a clock, it for orientation effect is Insensitive, orientation effect can hinder the operation of traditional prior art crystal clock.Additionally, rubidium clock is for temperature and gravity Effect is less sensitive, and these effects can hinder the operation under marine environment of the prior art clock.

Power source 22 preferably lithium ion battery.In the case of prior art OBS system utilizes on-board batteries, it it not profit Power, prior art battery is provided to be lead-acid batteries with external cable, alkaline battery or non-charging battery.The OBS of prior art System does not utilize lithium ion battery.But, due to sealing and the stand-alone nature of inventive container, need to utilize such electricity Pond, such as, lithium-ion type battery, its not vapour discharge, and be easily charging.

In figs 2 and 3, it is possible to understand that a feature of container 10, i.e. the shallow sectional configurations of container 10.Specifically, case Body 12 includes the first flat board 26 and the second flat board 28, and it links together along their edge by means of sidewall 14.At one In embodiment, flat board 26 and 28 is discoid, and therefore, the overall shape of casing 12 is the shape of wheel.It is appreciated that any In the case of, it is possible to understand that the feature of each flat board 26,28 is width (W), and the feature of sidewall 14 is height (H), its middle plateform The width W of 26,28 is more than the height H of sidewall 14.Certainly, at flat board 26,28 be discoid in the case of, it should with diameter D generation For width W.But, for the ease of describing shallow section, no matter casing 12 is circular and describes with diameter D or describe with height H, The feature of shallow section is identical.Although not limiting total shallow section, but, in one embodiment, highly H is not more than width Degree W or the 50% of diameter D.In a non-limitative example, the height H of container 10 is about 6.5 inches, and the width of container 10/ Diameter is about 18.5 inches.

As depicted in the figures, container 10 is substantially outer symmetrical around its x-axis and y-axis, therefore, is disposing During container 10, the orientation of container 10 is unessential, and it can rest on any one side 30, on 32, and still can be effective Be coupled to seabed.Therefore, with the systematic comparison of prior art OBS, it is designed to only be placed to sea on " vertically " position The end.Additionally, due to container 10 has shallow section, its balance on edge 34 is typically unstable.Therefore, if container 10 Edge 34 touch seabed, container 10 will tumble and be placed in two sides 30, on a side in 32.

Container 10 also comprises for bearing flat plate 26, and the internal-rib 33 of 28, because container 10 needs to bear the height of marine environment Pressure characteristic.Internal-rib 33 is possible to prevent flat board 26, " vibration " or the motion of 28, otherwise can cause and the interference of seismic wave detection.With Prior art is different, and the casing of a container 10 actually geophone described herein, therefore, seismic wave can not be subject to The transmission of distortion ground arrives geophone 18 by the flat board of container.In this, there are shallow section and heavily fortified point due to container 10 Real character, the geophone 18 fixing point in casing 12 becomes inessential, designs such that it is able to overcome with prior art Relevant problem.

Each unit can comprise and uniquely identifies device, and such as, RF identification (RFID) labelling 40 or be used for is followed the tracks of each The similar identification labelling of individual unit, if they are to process the most as described as follows.Similarly, each Unit can comprise sound position transducers 42, it may be determined that this unit position on seabed.

Fig. 1 also draws for the hydrophone 44 measuring pressure and the adapter 46 that can communicate with container 10, if container 10 are above deck or are arranged on storage rack described below.Adapter 46 can be the pin connector of standard, or permissible Being infrared or similar adapter, it need not hard line with container 10 when communicating.By means of adapter 46, can be to appearance Device 10 provides service without taking next flat board 26,28 or opening casing 12.Specifically, adapter 46 can carry out matter Amount controls test, extracts the geological data being recorded, makes clock 20 synchronize and recharge power source.Because adapter 46 is only Using on the water, it is also possible to provide waterproof, the adapter cover 47 of compressive resistance is to protect adapter 46.Utilize this adapter Cover 47, adapter 46 can be any AN connector meeting this container required function.Adapter 46 can not be that logical Often require to bear high pressure, the aerial lug of corrosive environment.

Finally, Fig. 1 represents optional fixation clamp 48, is used for clamping and process container 10.Fixation clamp 48 is placed on casing 12 On, therefore, fixation clamp 48 and any hardware extended from container 10, such as, changer 42 or hydrophone 44, between radial angle It is obtuse angle or acute angle.In an illustrated embodiment, radial angle is acute angle.Specifically, disposing or fetching such as container 10 After device, when process container, this device can clash into the side of ship or other equipment, and it likely destroys from these The hardware that device stretches out.By on placement fixation clamp 48 to the edge of casing 12, therefore, solid from extending centrally through of casing 12 The radial axle of clamp 48 is less than 90 °, and it separates with the radial axle extending centrally through changer 42 from casing 12, can reduce The destroyed probability of this hardware.

In one embodiment of the invention, it does not comprise fixation clamp 48, but blocking mechanism is fixed to sidewall 14, best It is on such position, the destroyed probability of equipment protruded from container 10 can be reduced.A kind of effective blocking mechanism Being the center latching mechanism having opposing fingers, it can be opened and close, it is allowed to this unit is fixed to the cable for disposing On.Blocking mechanism can also be fixed to sidewall 14 obliquely, so, the main shaft of blocking mechanism is non-intersect with the z-axis of container 10.And And, this orientation can also protect the hardware protruded from container 10.

Fig. 4 represents the outer surface 50 of one or two plectane 26,28.Specifically, outer surface 50 can have boss 51, Such as, ridge or groove, for strengthening coupling between container 10 and seabed.In an illustrated embodiment, boss 51 is on surface Chevron pattern figure is formed on 50.

Figure 4 and 5 also draw a fixation clamp 54, are used for clamping and process container 10, therefore, when container 10 is by with fixing When the fixing cable of folder 54 descends through water column, plectane 26,28 can keep the position of level substantially.Therefore, fixation clamp 54 can Being on the central shaft of a plectane 26,28, or it is placed on a plectane 26 on the center of gravity of container 10, on 28.

Return to Fig. 4-8, feature of this invention is that, around container 10, comprise cushion pad 52.Fig. 4-8 illustrates three kinds Different configuration of cushion pad 52, configuration therein is referred to as cushion pad 52a, cushion pad 52b and cushion pad 52c.In any one In the case of, cushion pad 52 has several function.First, when the edge 34 of container 10 touches on seabed, its shape can make One of two surfaces 30,32 of container 10 arrive seabed.Cushion pad 52 another function protection container 10 and any outside Part device, such as, it can be the changer 42 protruded from casing 12.Finally, cushion pad can have such shape, and it is permissible Container 10 is avoided to be wound around by shrimp-catching net and shrimping chain.In the case of any, cushion pad 52 can have some of the above or all These functions.

As it has been described above, cushion pad 52 can have several design.In Figure 5, the cushion pad 52a drawn is around casing 12 and sets The profile put, and in fig. 4, it is seen that cushion pad 52a be the top view of container 10.Specifically, cushion pad 52a has circle Or the section 55 of bending.As it can be seen, cushion pad 52a comprises the shoulder 56 being embedded in groove 58, groove 58 is by around case Body 12 edge limited.A part 60 of cushion pad 52a extends to, outside the edge of casing 12, to protect the edge of casing 12 34.Due to the circular nature of cushion pad 52a, if container 10 starts to be parked on seabed, then container 10 rolls or tilts to put down Plate 26, on the coupling surface of 28, so that flat board 26,28 keeps vertical with seabed.Additionally, the function of cushion pad 52a can be protected Container 10 exempts from vibrations, and can protect operator during process container 10.

Fig. 6 and 7 represents another kind of cushion pad section, and wherein cushion pad 52b has wedge section 62.Similarly, cushion pad 52b Comprising the shoulder 56 being embedded in groove 58, groove 58 is edge limited by around casing 12.A part 64 of cushion pad 52b Extend to outside the edge of casing 12, flat board 26,28 and the edge 34 of casing 12 can be protected.Cushion pad shown in Fig. 6 and 7 52b also comprises cavity 66, and cavity 66 can serve as holding and the handle of process container 10.In the embodiment of cushion pad 52b, can To understand, we require have the container 10 of cushion pad 52b to have such orientation on seabed, and the lozenges of cushion pad 52b is downward. Therefore, in this embodiment, flat board 28 is the top of container 10, and flat board 26 is the bottom of container 10.

In the cushion pad 52b embodiment of Fig. 6 and 7, additional bumper portion 68 is arranged on top board 28.Cushion pad portion Dividing 68 to have circular cross section 70, it is transitioned into wedge section 62.In one embodiment, bead can mold or be included in buffering In pad part 68, for increasing the buoyancy of bumper portion 68.By increasing the buoyancy at container 10 top, it can be ensured that container 10 have correct orientation, i.e. when container 10 transmits and leant on by water and be parked on seabed, wedge shape cushion pad 52b is to face down.

When container 10 is coupled to seabed, chain or other line can be pulled to container 10, and this chain is along cushion pad The lozenges of 52b slides and arrives the top of container 10.Bumper portion 68 is also prevented from chain or any equipment caught by line, This equipment is probably protruding above towards upper planar surface from container 10.

Fig. 8 represents the cushion pad 52 of another embodiment, and wherein cushion pad 52c includes narrow limit 74 and the baffle plate of broadside 76 Or wedge 72.Broadside 76 is fixed, and links between two fixation clamps 78, and fixation clamp 78 is fixed to the sidewall 14 of casing 12.? Well, fixation clamp 78 has such shape, and their outward flange 80 is formed with the transition face of the substantially flat of wedge 72.Disposing Period, container 10 can be parked in any one platen surface 26, and on 28, and the wedge 72 linked hangs down into seabed, and it forms inclined-plane Or sleeve, when pulling container 10, shrimping chain or similar line are on inclined-plane or sleeve.In this manner it is achieved that cushion pad 52c Force chain to arrive the top of container 10, thus prevent this chain from biting container 10.

Fig. 9 represents the softness of the present invention, non-rigid cable 82.Specifically, cable 82 includes inner core 84 and surrounding layer 86. Inner core 84 is made up of nonrigid material.In the present invention, nonrigid material is strand or fibrous non-conducting material, example As, rope.It was found that composite fibre materials is preferred material, although the present invention can also utilize other material.One In individual non-limitative example, synthetic fibers are polyester.In one embodiment, inner core 84 is by the fibroplastic list of the rope reversed Individual rope strand 88 is constituted, and wherein rope strand 88 is woven in formation inner core 84 together.Surrounding layer 86 is to be embossed on inner core 84.Surrounding layer Also have rib or groove 90 on 86, the resistance in water can be reduced.In one embodiment, surrounding layer 86 can be polyurethane Ester is made.

It is appreciated that cable 82 is to be made from a material that be electrically non-conductive owing to container 10 need not PERCOM peripheral communication or power supply.Above-mentioned Cable 82 is low elasticity and the high intensity cable not having creep.Different from the rigid wire of prior art, cable 82 does not has torque, Torsion i.e., under a load.Additionally, compare with the rigidity of prior art and semi-rigid cable, cable 82 lightweight and easy It is manipulated by.Therefore, utilize cable 82, can be along receptor line deployment container 10, wherein each container 10 is with certain spacing Fixed along cable 82.

As shown in Figures 9 and 10, feature of this invention is that a cable segmentation and utilize disconnected between each cable section 94 Wiring connector 92.Adapter 92 comprises the first assembly parts 96, and the first assembly parts 96 are embedded in the second assembly parts 98.Shear pin 100 are inserted through assembly parts 96, and 98, the two assembly parts can be made to be fixed together.The method utilizing any standard, can make These assembly parts are fixed to the adjacent free end of cable section 94.In one embodiment, each assembly parts 96,98 have endoporus respectively 102,104, it is to extend to the second end 108 from the first end 106.At the second end 108, each assembly parts have through each assembly parts The aperture 97,99 of opposite flank.When assembly parts 96 are placed in the second assembly parts 98, aperture 97,99 can be made to be directed at, cut Cutting pin 100 and embed the aperture 97,99 by alignment, and make assembly parts 96 at respective second end 108,98 connect.

At the first end 106 of each of which, it is limited at each hole 102, is shoulder 110 in 104.Each assembly parts insert On the free end of cable 98, and block 112 is fixed to this cable, and therefore, block 112 is against shoulder 110, and at the one of cable End clamps assembly parts.In another embodiment, the endoporus extending to the first end 106 from the second end 108 can be tapered, and Utilize and make assembly parts be fixed to the free end of cable more than the block of this diameter of bore.

In the case of any, each assembly parts 96,98 are fixed to one end of cable section 94, therefore, when assembly parts are fixed Time together, multiple cable section form a longer cable.If the tension force in longer cable is more than the shearing pole of shear pin In limited time, then shear pin just disconnects, so that longer cable separates.Because shear pin is easily inserted into and removes, Specific environment or in the case of, the shearing limit connecting cable can be easily adjusted.Such as, under certain conditions, may Seeking the shearing limit is the shear pin of 5000lbs, and in the other cases, it may be required shearing the limit is the shearing of 8000lbs Pin.If adapter is partitioned under shearing force, the most once cable is retrieved, the shear pin disconnected by replacement, permissible Easily retighten these assembly parts.

This breakaway-element system is preferable, because can nibble rapidly when the tension force of cable exceeds its working limit Close.Such as, in the rigidity and semi-rigid cable of prior art.Sometimes the tension force of 30000lbs or bigger can be produced.At this The cable of kind of the lower quickly engagement of load is likely to result in damage and injury.More preferably fetch one section of separate cable rather than Suffer from this damage and injury.

In another feature of this system, the tension force that disconnects of the cable being fixed to container is more than the company of fixing cable section Connect the disconnection tension force of device.Therefore, disconnecting in the case of tension force, cable section is just to disconnect before container separates with cable.This It is preferable, than location because positioning and fetch one section of cable that can engage and fetches and may hold by separate with cable container It is easy to get many.

Figure 12 and 13 represents a clamp system 120, and it allows seismic unit to be clamped directly on one section of cable, and not Need to cut cable in many prior-art devices.Clamp system 120 comprises the sleeve 122 of band axis hole 123, permissible by it Sleeve 122 is made to be assembled to (not shown) on cable.Clamp system 120 also comprises the convex shoulder 124,126 of mold pressing, and they are arranged on set The opposite end of cylinder 122.Aperture 128, through every one end of sleeve 122, is preferably being perpendicular to x and the y plane of sleeve 122 axle On.In an illustrated embodiment, sleeve 122 comprises the annular section 130 that can fix seismic unit.In another embodiment In, sleeve 122 can be the tubulose not having annular section 130.Sleeve 122 can be integrally formed as, and can be maybe to be sandwiched in one The two half-unit risen is divided, and as shown in figure 13, first half part 132 of its middle sleeve and second half part 134 of sleeve are It is clamped around cable (not shown), and utilizes wire clamp 136 to be fixed together.

When being installed on cable, a pin is through aperture 128, for the fixing clamp system slided from cable 120.Convex shoulder 124,126 are embossed into the two ends of sleeve 122, and it contributes to being that steady pin is fixed.Also may be used in the two ends of sleeve 122 To be horn mouth, it contributes to convex shoulder 124, and 126 are fixed.

Therefore, not being to cut cable and fix to clamp mechanism between two free ends of cable, the sleeve of the present invention can To clamp or to slide on one section of cable, and fixed under conditions of not cutting cable, along x and y plane, utilized pin Fix this mechanism and be possible to prevent the clamp system 120 rotation relative to cable, and prevent sliding axially along cable.

Figure 14-19 represents that seismic system is disposed and fetches the quarter deck of boats and ships.Figure 14 substantially draws one spar deck The seismic system of 202 is disposed and fetches boats and ships 200, arranges seismic deployment and fetches system 204, be used for disposing on deck 202 With fetch cable 206.

Seismic deployment and the parts fetching system 204 are storage racks 208, for depositing the OBS being fixed to cable 206 Unit.Should be appreciated that storage rack 208 is scalable, with meet special container deposit needs and boats and ships space limit.At figure 14 and 15, it is provided that four storage racks 208 are to make the container storing capacity of particular boat 200 maximize.Can from Figure 16 Going out, each storage rack 208 includes multirow 210 and multiple row 212 groove 214, is arranged to place an appearance in the most each groove 214 Device 216.Although the size of groove 214 can change with the size of the concrete OBS unit deposited, the preferred embodiment describes Storage rack 208 is for placing the disc-shaped container of above-mentioned shallow section, and it is often expressed as container 10.With reference to Figure 17, each groove 214 have COM1 218, when container 216 is placed in groove 214, it is allowed to container 216 and main control station (not shown) it Between communicate.In one embodiment, COM1 218 is to see Fig. 1 through container 10() shown in adapter 46 and container 216 links.As it has been described above, link can be the hard wire between COM1 218 and adapter 46, maybe can utilize some its His method, such as, infrared connection device.Regardless of situation, when being placed in groove 214, can be below by port 218 It is loaded on container 216 information of record, can recharge to element cell, quality control checking can be carried out on the unit, Can operate with activated with synchronised clock, and this unit can be encouraged again.

In the storage rack 208 of another embodiment, each row and each row groove are by the carousel of single lamination Replace, this conveyer belt preferably semicircle or U-shaped.Each carousel comprises cylinder, it is allowed to record unit is along transmission Conveyor path motion with mode, until this unit arrives adjacent with COM1.The shape of conveyor path preferably half Circle or U-shaped, it is allowed to record unit is inserted into the first end of conveyer belt and takes off from the second end.This configuration allows container It is inserted into and takes off from conveyer belt simultaneously.As an example, the first end of conveyer belt can be adjacent with cleaning, for clear Wash the container fetched from seabed, and the second end of conveyer belt can be adjacent with disposing station, it is allowed to container is secured to dispose cable On line.

No matter using which kind of storage system, storage system can be configured to the container chi of 8 ' × 20 ' × the 8 ' of standard Very little, therefore, storage system and any seismic unit wherein placed may utilize the container ship of standard easily to transport.

At Figure 15, it can be seen that in the system 204 of an embodiment, quarter deck system is the most certainly in 17 and 18 Dynamicization.

In addition to storage rack 208, also drawing a container deployment system 219, it is adjacent with storage rack 208, and prolongs Reach the edge on the deck 202 adjacent with the water surface.Pickup and place system 220 for storage rack 208 and deployment system 219 it Between mobile unit 216.Although various automatization or the pickup of semi-automation and place system 220 can be utilized, but shown In embodiment, one or more single shafts round transport device 221 is for container mobile between one or more grapple arms 223 216, grapple arm 223 can be at storage rack 208, mobile container 216 between device 221 and deployment system 219 of round transporting.

More specifically, deployment system 219 includes: be parallel to non-rigid cable 206 conveyer belt roll bed 226, and with Carriage 228 disposed by the container that conveyer belt 226 moves together.Cable machine 222 and cable reel/case 224 are positioned to straight line and move Dynamic non-rigid cable 206, it is adjacent with deployment system 219 and on the side of boats and ships.Laid continuously at cable 206 While in water, i.e. be in operation, container 216 is fixed to non-rigid cable 206, wherein utilizes carriage 228 to accelerate to hold Device 216 reaches the speed of cable 206.When the speed of cable 206 and the speed of container 216 are essentially identical, container 216 is fixed To cable 206, now, from carriage 228, discharge container 216 and continue to move along the conveyer belt 226 that advanced by cable, holding Device is that this cable is fixed.

Conveyer belt 226 has the first end 230 and the second end 232, and wherein pickup and place system 220 are placed on the first end 230 Neighbouring, and one or more cable machine 222 is placed on the neighbouring of the second end 232, and therefore, container 216 is about along conveyer belt 226 move to the second end 232 from the first end 230.Container carriage 228 moves also on track or framework 234, at least Part is along one section of conveyer belt 226.When preparing for deployment container 216, it is to utilize grapple arm 223 to be drawn from storage rack 208 Under, and move to the position adjacent with the first end 230 of conveyer belt 226 on round transport device 221.Grapple arm 223 is placed Container 216 is on carriage 228, and it is also positioned on the track 234 adjacent with the first end 230 of conveyer belt 226.Once Container 216 is placed on carriage 228, and carriage 228 is accelerated to the second end of conveyer belt 226 along conveyer belt 226 232.When the acceleration of carriage 228 reaches the speed of cable 206, container 216 is jammed or is fixed on cable 206.? In one embodiment, container 216 comprises the clip of band pawl, once reaches fixed speed, and clip can close around cable 206 Close.In this embodiment, container 216 can directly be clamped on cable 206, maybe can be jammed on cable 206 The fixing sleeve arranged.In either case, cable machine 222 pulls on cable 206, makes cable 206 along conveyer belt 226 Motion, until it is deployed on the edge of ship 200.

One or more RFID reader 240 can be placed along pickup with place system 220 and deployment system 219, is used for Follow the tracks of special container 216 moving along deck 202.This tracking is for above-mentioned deployment and to fetch system 204 be especially desirable , because container 216 has independent character, it does not require that unit is operated on deck 202 and is inserted into storage rack Specific order is kept time on 208.Stated differently, since each container 10 of the present invention is independent, and the sea of each container Position, the end and orientation information are to be recorded in interior and record on this position the geological data of container, when they are from ocean Being retrieved, when operating and deposit, these unit need not in order or receptor line order is kept.In this respect, adjacent Unit need not along specific order by system 204, and need not be adjacent to deposit on storage rack 208, but can To be inserted into randomly on storage rack 208.

Professional is appreciated that lay cables 206 is the most controlled to the speed in water, in order that compensating ship The oceangoing ship 220 irregular and uncertain motion in water.In a preferred embodiment, can adjust continuously for transmit with The speed of the carriage 228 of the fixing unit 216 of cable 206, thus allow container 216 to be operationally smoothly fixed to On cable 206.

Although conveyer belt 226 described above, carriage 228 and cable 206 linearly arrange, but should be bright In vain, non-linear configuration is also contained in the present invention, as long as this arrangement can accelerate offshore earthquake unit, in order to make this unit can To be fixed on the cable of motion.

As set forth above, it is possible to utilize deployment system 219 to put into practice a kind of method of the present invention, i.e. be in operation fixing and release Put seismic unit 216, without the motion stopping cable 206 when being routed in water.The method can be with deployment system 219 Being used in combination, it comprises the following steps: to provide one with given speed motion the cable along cable path, edge and this cable The path acceleration seismic unit that path is adjacent, until this seismic unit is moved with the speed of substantially cable, and when the two moves Fix seismic unit to cable.According to the method, seismic unit can be fixed on cable and be discharged in water, is disposing Period need not stop and starting cable and boats and ships, thus reduce and lay the time needed for one section of cable along receptor line.

In the another embodiment of the present invention shown in Figure 19, semi-automatic conveyer belt 250 be with from reeler/cable case Pull out and utilize the cable 206 that cable machine 222 lays in 224 to intersect.In this case, storage rack 208 and pickup and placement System 220 is arranged in the either side of conveyer belt 250, and it is configured similarly to shown in Figure 15.But, it not to make cable 206 and transmit Carry 250 adjacent, but cable 206 spatially separates with conveyer belt 250.In this embodiment, conveyer belt 250 is by first End 252 and the second end 254 limit.A part 256 for conveyer belt 250 is bending, it is allowed to container 216 moves from fixing container The cable 206 of 216 arrives the cable 206 at conveyer belt 250 second end 254.Also drawing second conveyer belt 258 in figure, it is For storing containers 216 before being fixed to cable 206.Second conveyer belt 258 is from adjacent with pickup and place system 220 Position move container 216 the first end 254 to conveyer belt 250.

Fixed station 260 is limited in the joining of cable 206 and conveyer belt 250.At fixed station 260, offshore earthquake list Unit 216 is fixed to cable 206, and the unit fixed is then released in water.In one embodiment, cable pawl 262 is put Put the downstream at fixed station 260.When deployment container 216, cable pawl 262 is jail before unit 216 is fixing by fixed station 260 Admittedly clamp cable 206, thus remove the line tension of cable pawl 262 upstream, it is allowed to unit 216 is safely secured to cable 206.This is especially desirable in semi-automatic configuration, and wherein operator's manually fixed cell 216 is on cable 206.In office In the case of He, cable pawl release system 264 may be embodied in fixed station 260, in release cable pawl 262 and cable 206 Time tensioned, the probability that operator is adjacent with cable 206 or contacts can be reduced.In this preferred embodiment, release system System 264 comprises the first button 266 and the second button 268, it is necessary to start the two button, in order to make cable pawl 262 discharge simultaneously. So, it is generally desirable to, single operator must sequentially make with the hands to encourage release system 264, therefore, discharges system 263 Function be safety device, it can reduce the danger of operator.

Although there is no need, but in the embodiment of the present invention shown in Figure 19, quarter deck is equipped two cable portion Administration's system, one of them system is the port side on deck 202, and another system is the starboard side on deck 202, at them Between place storage rack 208, pickup and place system 220, and conveyer belt 250.Conveyer belt 250 bends to two sides, and every Individual cable deployment system comprises reeler/case 224, cable machine 222, fixed station 260 and cable pawl 262.This duplex system has There is redundancy, and when a system can not work, it can be ensured that seismic operations will not be delayed by.

One function of seismic data recording unit of the present invention is the continuous operation of this unit.This feature in the present invention In, before earth surface, start data acquisition placing this unit.In a preferred embodiment, offshore earthquake unit is swashed Encourage, and started to gather data before being deployed in water.It is energized before deployment and starts to gather the system of data at needs It is stable before detection signal time.The probability of interrupt signal detection when this can reduce the variable condition of electronic operation. Certainly, in the case of this continuous data collecting unit, novelty is this unit " continuously " character, and this function can be answered It is used in land or in the environment of ocean.

In similar embodiment, before placing, start data record along receptor line.Such as, marine seismic data note Record unit is the most energized when disposing on boats and ships, and starts to gather data before being deployed in water.Similarly, this can make Unit was stablized before the needs signal record time.For this purpose it is proposed, system stability key element is clock stable.At this it is In the various key elements of system, it is well known that stablizing of clock typically requires long time.Therefore, in an enforcement of the present invention In example, no matter this unit is to detect data continuously or record data continuously, and clock is always to maintain work.

In any one method of two above method, under the continuous service condition of not interrupt location, can be in portion The several circulations affixed one's name to and fetch utilize this unit.Therefore, activated operation before deployment.Proceeding the same of record Time, this device is deployed, and fetches and disposes.As long as memorizer is enough, can be in the several circulations disposed and dispose again Middle holding this continuous print record.

At this on the one hand, in the case of seismic data unit comprises takeup type memorizer, even in earthquake detection not Can record continuously during use.Therefore, in addition to the above mentioned advantages, start or sign on it is not necessary that.Additionally, The continuous writing function utilizing takeup type memorizer is as the backup gathering data before record, until former data are write Enter.Another advantage is, as long as clock is to synchronize, this device can the most all be ready to dispose.

Being retrieved in the case of record proceeds afterwards at unit, can carry out routine operation, such as, data are received Collection, quality control is tested, and battery charging, without interruption logging.One advantage of this system is, it is possible to use this dress Put recording quality control test data rather than record geological data when carrying out quality control test.In other words, data are defeated Enter is to change over quality control data from geological data.Once difficulty action accomplishment controls, and this device can be with recovery record geological data Or other required data, such as, the data relevant with position and timing.

In a preferred embodiment of the invention, offshore earthquake unit comprises inertial navigation system, for measuring unit X, y when transmitting by water column and being parked in seabed and z location information.In general, this systematic survey is along x, y and z side The motion in each direction in, and the angular movement around each x, y and z-axis.In other words, this systematic survey unit is from boats and ships To 6 degree of freedom during thalassogenic movement, and utilize this metrical information with the position determining on seabed.It is preferable to carry out at this In example, utilize accelerometer, it may be determined that the information of this x, y and z directions.Utilize dipmeter and compass or other orientation dress Put, such as, gyroscope, it may be determined that the orientation at angle, i.e. tilt and direction.In one embodiment of the invention, three are utilized Accelerometer and three gyroscopes, can produce the inertial navigation data for determining this unit sub sea location.

In the case of any, by combining accelerometer and inclination and the directional information function as the time, permissible Determine this unit initial position when being released in water column and speed, this unit motion path by water column.More important Be, it may be determined that this unit is in the position at the bottom of water column, i.e. this unit is in the position in seabed.Enterprising in suitable time interval Row time sampling is to obtain required degree of accuracy.Time sampling between various measurement components can be different.Such as, it is used for determining The sampling of data that direction obtains from compass, and be slower than from acceleration for measuring the sampling of data speed obtained from dipmeter The sampling of data speed that degree meter obtains.Before this, other ocean unit of neither one utilizes one or more accelerometer Determine position according to the method.At this on the one hand, the method and system can substitute for other technology and determine sub sea location Need, such as, by sound position transducers, etc..

Despite above description, the function of this location determining method is particularly well-suited to above-mentioned continuous print recording method. Because unit is ready for when being discharged into the top of water column recording data, x, y and z location information easily can be remembered by this unit Record, and become a part for this unit partial data record.

The present invention also provides for unique retrieval methods of a kind of OBS unit 300 fixing with cable, as shown in figure 20.Specifically Ground is said, it has been found that the cable 302 of fetching on boats and ships 306 tail end 304 is first along cable when boats and ships move front end 308 Cable 302 is put down in the direction of line, in order that the resistance reduced when taking out cable on seabed 310, and prevent the excessive of cable 302 Tension force or " pulling force ", this situation is the most universal in prior art retrieval methods.Specifically, in the method for the present invention In, the water drag force on OBS unit and cable can make cable 302 slow down or overturn after boats and ships 306, as shown in 312, and profit As shock absorber and excessive tension force is reduced with water column.

In this approach, the speed of boats and ships 306 is adjusted not as the most important in the retrieval methods of prior art.This Outward, when boats and ships are to move along the direction contrary with it, because cable 302 is to overturn 312 in the water after boats and ships, it is less May be wound around by the propeller of boats and ships, this situation is contingent in utilizing art methods.Certainly, professional Understand, in the method for the invention, cable can be taken out on the bow of boats and ships or stern, as long as these boats and ships are the sides along cable To motion, and the taking-up of cable is the tail end at boats and ships.

In the case of any, floating release system 314 can also be fixed to cable, it is common that is being deployed the one of cable End or two ends, can at least make the cable of part rise to the water surface, utilize process as described above to fetch and easily clasped by cable. Known to this method is in professional field, it is possible to comprising a floating installation, it is from sea in the required time of fetching Be released at the end, or swim in the floating installation on the water surface, but keep with cable when disposing fixing.

The non-rigid cable of the present invention is also contained in unique dispositions method of container shown in Figure 21.Specifically, utilize Non-rigid cable 402 at least makes two OBS unit 400 be tied in together.Cable 402 and OBS unit 400 are deployed in water column In 404.Because the negative buoyancy force of OBS unit 400 is far longer than the negative buoyancy force of non-rigid cable, it is heavy that these unit had before cable Entering the trend by water column, therefore, the cable section connecting two OBS unit is decelerated, as indicated at 406 between two unit. It is fracture that cable descends through the drag force function of water column, thus the decline of the unit that slows down allow unit to be placed on seabed 408 It is easier to be controlled.Specifically, the effect that slows down can control the orientation of unit, such as, delays with wedge shape shown in Fig. 6 and 7 Those unit of the cooperation of die head.Additionally, non-rigid cable makes unit gently be parked on seabed, it is allowed to unit and sea , there is consistent coupling at the end.

This is the improvement to art methods, because art methods utilizes rigidity or semi-rigid cable to dispose OBS Unit.This cable has the trend that can sink to quickly together with unit by water column.In other words, this cable does not has Have with the present invention is lightweight, the drag characteristics that non-rigid cable is identical.Utilizing cable and the OBS of this art methods In unit, when unit quickly transmits by water column, the orientation of unit is that instability occurs easily, such as, quivers Move or upset.

The another advantage of dispositions method of the present invention is, is disposing cable and once be parked on seabed, non-rigid cable Line can loosely form between two adjacent unit.It is true that it was found that when general deployment operation, as above Described, between non-rigid cable length between two unit reality time generally far larger than the two unit is parked on seabed Every.In other words, being once parked on seabed, the non-rigid cable between adjacent cells has the biggest slackness.Therefore, originally The non-rigid cable of invention can not separate two unit.In the case of any, ship operation person can utilize non-just Property cable in formed slackness, correct its receptor line when being laid.Specifically, if lay boats and ships drift or make by The receptor line laid deviates preferable receptor line, then the boats and ships on the water surface can be reorientated so that it is remaining non-rigid cable Line and the unit fixed begin return on preferable receptor line.The cable slack degree that the non rigid nature of cable causes is permitted Permitted operator to return on receptor line, and make remaining unit substantially rest on them along the ideal position of expection line. Contrasting with this, if this unit is fixed on rigidity or semi-rigid cable, then this cable does not has any adjustable slackness, And the remaining element along ideal receiver line can not rest on along the ideal position of receptor line.Additionally, once OBS is mono- Unit 400 is on the position in seabed, and the cable 402 between these unit is lax, as shown in 410.This can make each single Unit's " uncoupling ", and prevent unwanted noise along the transmission of cable.

In the case of clock 20 is crystal clock, the information from dipmeter 38 can be used for correcting gravity to clock timing Impact.In the prior art, the information of dipmeter is only applied to correct geological data.Except utilizing crystal clock to correct temperature Beyond impact, other kinds of crystal is not had to can be used for the correction of this clock.Therefore, feature of this invention is that, utilize The information correction clock-timed inaccuracy of dipmeter, it originates from the gravitational effect being applied on crystal clock.Time this Airborne container can be carried out by clock correction when data record, or is applied to the data extracted the most from container.

Similarly, the information from dipmeter 38 can be used for the mathematics balancing run to geological data.In the prior art Correction geological data is for direction of adjustment, and the machinery that this school is based in the prior art OBS system of boat-carrying installing is normal Flatrack.But, typical machinery gimbal can cause the deterioration of data fidelity, and this is owing to gimbal is subject on its ship The resistance arrived.In a feature of the present invention, we have determined that, the most flat Data correction or " mathematics balancing run " are excellent Normal flat operational approach in prior art.Therefore, the present invention may utilize the information of dipmeter and adjusts container according to mathematical method and hang down Geological data during straight orientation.This mathematics balancing run can be implemented on the airborne container when data record, maybe can apply In the data extracted the most from container.

Take additionally, can be used for improving mathematics balancing run further from the information of compass 36 with the rotation of adjustment unit To.Specifically, compass data can combine with the tilt meter data in mathematics balancing run, correct more completely by The geological data affected it is orientated in container.

Although the most described some feature and the embodiment of the present invention in detail, it is easily understandable that in following claims In the spirit and scope of book, the present invention includes all of improving.

Claims (15)

1. an ocean bottom seismic data collection system, including:

The most fluid-tight casing, described casing includes the first flat board and the second flat board, and described first flat board and the second flat board are along it Edge linked together by sidewall, described first flat board and the second flat board are discoidal and are parallel；

B. at least one geophone being arranged in described casing；

C. the clock in described casing it is arranged on；

D. the power source in described casing it is arranged on；

E. the seismic data recorder in described casing it is arranged on；And

The most wherein said system has negative buoyancy force.

2., according to the ocean bottom seismic data collection system described in claim 1, wherein said sidewall is characterised by highly, and institute Stating the first flat board and described second flat board is characterised by width, wherein this height is less than this width.

3. according to the ocean bottom seismic data collection system described in claim 1, wherein said first flat board and described second flat board In at least one limited by inner surface and outer surface, wherein said outer surface is provided with groove, boss or ridge.

4., according to the ocean bottom seismic data collection system described in claim 1, wherein this casing is symmetrical.

5., according to the ocean bottom seismic data collection system described in claim 1, wherein this casing has the first axle and the second axle, and Wherein this casing is symmetrical around each axle in the first axle and the second axle.

6., according to the ocean bottom seismic data collection system described in claim 1, wherein this casing is characterised by height and diameter, And wherein this diameter is more than described height.

7., according to the ocean bottom seismic data collection system described in claim 6, wherein this height is not more than the 50% of this diameter.

8. an ocean bottom seismic data collection system, including:

The most discoidal fluid-tight casing, described casing is formed by two parallel circular flat boards, the circle that said two is parallel Shape flat board is connected around their edge by sidewall, and wherein said casing is characterised by height and diameter, and wherein this is straight Footpath is more than described height；

B. at least one geophone being arranged in described casing；

C. the clock in described casing it is arranged on；

D. the power source in described casing it is arranged on；

E. the seismic data recorder in described casing it is arranged on；

The most wherein said system has negative buoyancy force；And

The most wherein said system is autonomous system, and it need not PERCOM peripheral communication or control during the record of geological data.

9., according to the ocean bottom seismic data collection system described in claim 8, wherein this height is not more than the 50% of this diameter.

10., according to the ocean bottom seismic data collection system described in claim 8, wherein said seismic data recorder is arranged on Fluid-tight interior compartment therein.

11. are arranged on wherein according to the ocean bottom seismic data collection system described in claim 8, wherein said geophone Fluid-tight interior compartment.

12. are arranged on therein impermeable according to the ocean bottom seismic data collection system described in claim 8, wherein said clock The interior compartment of water.

13. according to the ocean bottom seismic data collection system described in claim 8, wherein said power source be arranged on therein not Permeable interior compartment.

14. according to the ocean bottom seismic data collection system described in claim 8, at least one geophone wherein said be by The combination that multiple geophones are constituted.

15. according to the ocean bottom seismic data collection system described in claim 8, in wherein said two parallel circular flat boards At least one is limited by inner surface and outer surface, and wherein said outer surface is provided with groove, boss or ridge.