CN103015995B - Method and device for measuring stratigraphic dip by resistivity device with tilt coil - Google Patents
Method and device for measuring stratigraphic dip by resistivity device with tilt coil Download PDFInfo
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- CN103015995B CN103015995B CN201210550501.8A CN201210550501A CN103015995B CN 103015995 B CN103015995 B CN 103015995B CN 201210550501 A CN201210550501 A CN 201210550501A CN 103015995 B CN103015995 B CN 103015995B
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Abstract
The invention discloses a method and a device for measuring a stratigraphic dip by a resistivity device with a tilt coil. The method comprises the following steps: a first magnetic moment and a second magnetic moment are acquired; a first phase difference P1 and a first amplitude ratio A1 are computed; a second phase difference P2 and a second amplitude ratio A2 are computed; a third phase difference P and a third amplitude ratio A are acquired; resistivity R is computed according to P and A; the corresponding relation between R and an azimuth angle of the resistivity device is acquired; and the current stratigraphic dip corresponding to the azimuth angle is determined according to R and the corresponding relation. According to the method and the device disclosed by the invention, because the corresponding relation between the azimuth angle and the resistivity is acquired, an azimuth angle corresponding to an extremum resistivity can be obtained, and the current stratigraphic dip can be obtained according to the azimuth angle corresponding to the extremum resistivity, i.e. the stratigraphic dip is measured without the need of other devices, and the cost is reduced.
Description
Technical field
The present invention relates to exploration field, in particular to a kind of stratigraphic dip measuring method and device of the resistivity tools by band tilt coil.
Background technology
Electromagnetic Wave Propagation resistivity apparatus is substantially the most also one of most important device in well logging during, what the Electromagnetic Wave Propagation resistivity apparatus not with tilt coil measured is the conventional formation information not with orientation, the geosteering function of this device according to device near stratigraphic boundary time resistivity response there is polarizing angle phenomenon to realize, but owing to there is no directionality, equipment is made all to occur the polarizing angle of equidirectional at oil reservoir near coboundary or lower boundary, therefore can only judge whether near border, coboundary or lower boundary cannot be told, therefore also cannot determine that this adjusting device moves upward or moves downward.In order to address this problem, there is the Electromagnetic Wave Propagation resistivity apparatus improved in prior art, two receiving coils are tilted, the signal measured so just has directionality, make this device can pick out present position when geosteering near coboundary or lower boundary, but this device cannot record current formation inclination angle.
For the problem that cannot record current formation inclination angle in prior art with tilt coil Electromagnetic Wave Propagation resistivity apparatus, at present effective solution is not yet proposed.
Summary of the invention
The invention provides a kind of stratigraphic dip measuring method and device of the resistivity tools by band tilt coil, at least to solve the problem that cannot record current formation inclination angle in prior art with tilt coil Electromagnetic Wave Propagation resistivity apparatus.
To achieve these goals, according to an aspect of the present invention, a kind of stratigraphic dip measuring method of the resistivity tools by band tilt coil is provided.
Stratigraphic dip measuring method according to the resistivity tools by being with tilt coil of the present invention comprises: obtain the first magnetic moment and the second magnetic moment, wherein, first magnetic moment is the magnetic moment of the first transmitting coil, second magnetic moment is the magnetic moment of the second transmitting coil, and the first transmitting coil and the second transmitting coil are arranged at the two ends of the Electromagnetic Wave Propagation resistivity apparatus of band tilt coil; Calculate first-phase potential difference P1 and the first Amplitude Ratio A1, wherein, the phase difference of the second induced electromotive force that P1 is the first induced electromotive force of producing on the first receiving coil of the first transmitting coil and produces on the second receiving coil, A1 is the Amplitude Ratio of the first induced electromotive force and the second induced electromotive force, first receiving coil and the second receiving coil are between the first transmitting coil and the second transmitting coil, first induced electromotive force and the first magnetic moment meet preset relation, and the second induced electromotive force and the first magnetic moment meet preset relation; Calculate second-phase potential difference P2 and the second Amplitude Ratio A2, wherein, the phase difference of the 4th induced electromotive force that P2 is the 3rd induced electromotive force that produces on the first receiving coil of the second transmitting coil and produces on the second receiving coil, A2 is the Amplitude Ratio of the 3rd induced electromotive force and the 4th induced electromotive force, 3rd induced electromotive force and the second magnetic moment meet preset relation, and the 4th induced electromotive force and the second magnetic moment meet preset relation; Obtain third phase potential difference P and the 3rd Amplitude Ratio A, wherein, P=(P1+P2)/2, A=(A1+A2)/2; Resistivity R is calculated according to P and A, wherein, the R that resistivity tools is corresponding different when different orientations; Obtain azimuthal corresponding relation of R and resistivity tools; The current formation inclination angle that azimuth is corresponding is determined according to R and corresponding relation.
Further, the first magnetic moment is obtained and the second magnetic moment comprises: obtain the first magnetic moment and the second magnetic moment that preset value is 1.
Further, calculate resistivity R according to P and A to comprise: the value obtaining third phase potential difference or the 3rd Amplitude Ratio acquisition R according to default corresponding relation.
Further, the azimuthal corresponding relation obtaining R and resistivity tools comprises: obtains R and with reference to azimuthal corresponding relation, wherein, reference azimuth is 0 ° of angle with formation plane; Obtain the corresponding relation at R and true bearing angle, wherein, true bearing angle is 0 ° of angle with horizontal plane.
Further, determine that current formation inclination angle corresponding to azimuth comprises according to R and corresponding relation: in preset range, obtain the extreme value in multiple R, wherein, extreme value comprises minimum value Rmin or maximum value Rmax; Determine the true bearing angle that extreme value is corresponding and be current formation inclination angle with reference to azimuthal difference.
To achieve these goals, according to another aspect of the present invention, provide a kind of stratigraphic dip measurement mechanism of the resistivity tools by band tilt coil, this device is for performing any one stratigraphic dip measuring method by the resistivity tools of band tilt coil provided by the invention.
According to a further aspect in the invention, a kind of stratigraphic dip measurement mechanism of the resistivity tools by band tilt coil is provided.This device comprises: the first acquiring unit, for obtaining the first magnetic moment and the second magnetic moment, wherein, first magnetic moment is the magnetic moment of the first transmitting coil, second magnetic moment is the magnetic moment of the second transmitting coil, and the first transmitting coil and the second transmitting coil are arranged at the two ends of the Electromagnetic Wave Propagation resistivity apparatus of band tilt coil; First computing unit, for calculating first-phase potential difference P1 and the first Amplitude Ratio A1, wherein, the phase difference of the second induced electromotive force that P1 is the first induced electromotive force of producing on the first receiving coil of the first transmitting coil and produces on the second receiving coil, A1 is the Amplitude Ratio of the first induced electromotive force and the second induced electromotive force, first receiving coil and the second receiving coil are between the first transmitting coil and the second transmitting coil, first induced electromotive force and the first magnetic moment meet preset relation, and the second induced electromotive force and the first magnetic moment meet preset relation; Second computing unit, for calculating second-phase potential difference P2 and the second Amplitude Ratio A2, wherein, the phase difference of the 4th induced electromotive force that P2 is the 3rd induced electromotive force that produces on the first receiving coil of the second transmitting coil and produces on the second receiving coil, A2 is the Amplitude Ratio of the 3rd induced electromotive force and the 4th induced electromotive force, 3rd induced electromotive force and the second magnetic moment meet preset relation, and the 4th induced electromotive force and the second magnetic moment meet preset relation; Second acquisition unit, for obtaining third phase potential difference P and the 3rd Amplitude Ratio A, wherein, P=(P1+P2)/2, A=(A1+A2)/2; 3rd acquiring unit, calculates resistivity R for root according to P and A, wherein, and the R that resistivity tools is corresponding different when different orientations; 4th acquiring unit, for obtaining azimuthal corresponding relation of R and resistivity tools; Determining unit, for determining the current formation inclination angle that azimuth is corresponding according to R and corresponding relation.
Further, the first acquiring unit comprises: first obtains subelement, for obtaining the first magnetic moment and the second magnetic moment that preset value is 1.
Further, determining unit is also for obtaining the value of third phase potential difference or the 3rd Amplitude Ratio acquisition R according to default corresponding relation.
Further, the 4th acquiring unit comprises: second obtains subelement, for obtaining R and with reference to azimuthal corresponding relation, wherein, being 0 ° of angle with reference to azimuth with formation plane; 3rd obtains subelement, and for obtaining the corresponding relation at R and true bearing angle, wherein, true bearing angle is 0 ° of angle with horizontal plane.
Further, determining unit comprises: the 4th obtains subelement, and for obtaining the extreme value in multiple R in preset range, wherein, extreme value comprises minimum value Rmin or maximum value Rmax; Determine subelement, for determining the true bearing angle that extreme value is corresponding and being current formation inclination angle with reference to azimuthal difference.
Pass through the present invention, owing to obtaining the corresponding relation at azimuth and resistivity, thus can in the hope of the azimuth corresponding to extreme value resistivity, the azimuth corresponding according to extreme value resistivity can in the hope of current formation inclination angle, therefore the problem that cannot record current formation inclination angle in prior art with tilt coil Electromagnetic Wave Propagation resistivity apparatus is solved, namely do not need to measure stratigraphic dip by other equipment, reduce cost.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 a is the structured flowchart passing through the stratigraphic dip measurement mechanism of the resistivity tools of band tilt coil according to the embodiment of the present invention;
Fig. 1 b is the schematic diagram according to the phase difference of the embodiment of the present invention and the conversion plate of resistivity;
Fig. 1 c is the schematic diagram according to the Amplitude Ratio of the embodiment of the present invention and the conversion plate of resistivity;
Fig. 2 is the schematic diagram of the resistivity tools according to the embodiment of the present invention;
Fig. 3 is the flow chart passing through the stratigraphic dip measuring method of the resistivity tools of band tilt coil according to the embodiment of the present invention;
Fig. 4 a is the phase difference apparent resistivity according to the embodiment of the present invention and the schematic diagram with reference to azimuthal corresponding relation;
Fig. 4 b is the Amplitude Ratio apparent resistivity according to the embodiment of the present invention and the schematic diagram with reference to azimuthal corresponding relation;
Fig. 5 is the schematic diagram according to the phase difference apparent resistivity of the embodiment of the present invention and the corresponding relation at true bearing angle.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiments provide a kind of stratigraphic dip measurement mechanism of the resistivity tools by band tilt coil, what provide the embodiment of the present invention below is introduced by the stratigraphic dip measurement mechanism of the resistivity tools being with tilt coil.
Fig. 1 a is the structured flowchart passing through the stratigraphic dip measurement mechanism of the resistivity tools of band tilt coil according to the embodiment of the present invention.
As shown in Figure 1a, this device comprises the first acquiring unit 11, first computing unit 12, second computing unit 13, second acquisition unit 14, the 3rd acquiring unit 15, the 4th acquiring unit 16 and determining unit 17.
First acquiring unit 11 is for obtaining the first magnetic moment and the second magnetic moment, wherein, first magnetic moment is the magnetic moment of the first transmitting coil, and the second magnetic moment is the magnetic moment of the second transmitting coil, and the first transmitting coil and the second transmitting coil are arranged at the two ends of the Electromagnetic Wave Propagation resistivity apparatus of band tilt coil.
First computing unit 12 is for calculating first-phase potential difference P1 and the first Amplitude Ratio A1, wherein, the phase difference of the second induced electromotive force that P1 is the first induced electromotive force of producing on the first receiving coil of the first transmitting coil and produces on the second receiving coil, A1 is the Amplitude Ratio of the first induced electromotive force and the second induced electromotive force, first receiving coil and the second receiving coil are between the first transmitting coil and the second transmitting coil, first induced electromotive force and the first magnetic moment meet preset relation, and the second induced electromotive force and the first magnetic moment meet preset relation.
Second computing unit 13 is for calculating second-phase potential difference P2 and the second Amplitude Ratio A2, wherein, the phase difference of the 4th induced electromotive force that P2 is the 3rd induced electromotive force that produces on the first receiving coil of the second transmitting coil and produces on the second receiving coil, A2 is the Amplitude Ratio of the 3rd induced electromotive force and the 4th induced electromotive force, 3rd induced electromotive force and the second magnetic moment meet preset relation, and the 4th induced electromotive force and the second magnetic moment meet preset relation.
Second acquisition unit 14 for obtaining third phase potential difference P and the 3rd Amplitude Ratio A, wherein, P=(P1+P2)/2, A=(A1+A2)/2.
3rd acquiring unit 15 is for calculating resistivity R according to P and A, and wherein, resistivity tools is corresponding different R when different orientations.
4th acquiring unit 16 is for obtaining azimuthal corresponding relation of R and resistivity tools.
Determining unit 17 is for determining the current formation inclination angle that azimuth is corresponding according to R and corresponding relation.
In the present embodiment, owing to obtaining the corresponding relation at azimuth and resistivity, thus can in the hope of the azimuth corresponding to extreme value resistivity, the azimuth corresponding according to extreme value resistivity can in the hope of current formation inclination angle, namely do not need to measure stratigraphic dip by other equipment, decrease cost.
As the preferred implementation of one, the first acquiring unit comprises: first obtains subelement, for obtaining the first magnetic moment and the second magnetic moment that preset value is 1.
Particularly, determining unit can preset according to following basis the value that corresponding relation obtains third phase potential difference or the 3rd Amplitude Ratio acquisition resistivity conversion plate R.
Default corresponding relation can be resistivity conversion plate, Fig. 1 b is the schematic diagram according to the phase difference of the embodiment of the present invention and the conversion plate of resistivity, Fig. 1 c is the schematic diagram according to the Amplitude Ratio of the embodiment of the present invention and the conversion plate of resistivity, this conversion plate is that the Plotting data recorded according to early stage forms, particularly, curve in plate be the corresponding relation of resistivity and phase difference and Amplitude Ratio, will phase difference be obtained and Amplitude Ratio interpolation in plate can obtain corresponding resistivity value.We claim this value to be apparent resistivity value.
In order to reduce amount of calculation, can using formation plane as 0 ° of azimuth, preferably, the 4th acquiring unit comprises: second obtains subelement, for obtaining R and with reference to azimuthal corresponding relation, wherein, being 0 ° of angle with reference to azimuth with formation plane.3rd obtains subelement, and for obtaining the corresponding relation at R and true bearing angle, wherein, true bearing angle is 0 ° of angle with horizontal plane.
In order to reduce amount of calculation further, with extreme value, as Rmin or Rmax is as a reference point, determining unit comprises: the 4th obtains subelement, for obtaining the extreme value in multiple R in preset range, wherein, extreme value comprises minimum value Rmin or maximum value Rmax, and preset range can be within the scope of positive and negative 90 °, only there is an extreme value within the scope of this, this extreme value both may be Rmin, also may be Rmax; Determine subelement, for determining the true bearing angle that this extreme value is corresponding and being current formation inclination angle with reference to azimuthal difference.
Fig. 2 is the schematic diagram of the resistivity tools according to the embodiment of the present invention, as shown in Figure 2, T1, T2 are with transmitting coil point-symmetric in R1 and R2, R1 and R2 is two inclination receiving coils, the angle that these two tilt coils tilt can be arbitrary size, but can not be ± 90 °, and the angle tilted is equal, is 0 degree with the angle of T1, T2 coil.This kind equipment can have multiple symmetric emission coil different from T1, T2 position, and mandrel M is metal non magnetic drill collar.
The embodiment of the present invention additionally provides a kind of stratigraphic dip measuring method of the resistivity tools by band tilt coil, and the method can perform based on above-mentioned device.
Fig. 3 is the flow chart passing through the stratigraphic dip measuring method of the resistivity tools of band tilt coil according to the embodiment of the present invention.
As shown in Figure 3, the method comprises following step S302 to step S314.
Step S302, obtain the first magnetic moment and the second magnetic moment, wherein, the first magnetic moment is the magnetic moment of the first transmitting coil, second magnetic moment is the magnetic moment of the second transmitting coil, and the first transmitting coil and the second transmitting coil are arranged at the two ends of the Electromagnetic Wave Propagation resistivity apparatus of band tilt coil.
Change due to magnetic moment can't affect the phase difference of calculating and the value of Amplitude Ratio, also can not affect follow-up other and calculate, therefore can suppose that the value of magnetic moment is 1, that is, in this step, obtains the first magnetic moment and the second magnetic moment that preset value is 1.
Step S304, calculate first-phase potential difference P1 and the first Amplitude Ratio A1, wherein, the phase difference of the second induced electromotive force that P1 is the first induced electromotive force of producing on the first receiving coil of the first transmitting coil and produces on the second receiving coil, A1 is the Amplitude Ratio of the first induced electromotive force and the second induced electromotive force, first receiving coil and the second receiving coil are between the first transmitting coil and the second transmitting coil, first induced electromotive force and the first magnetic moment meet preset relation, and the second induced electromotive force and the first magnetic moment meet preset relation.
Step S306, calculate second-phase potential difference P2 and the second Amplitude Ratio A2, wherein, the phase difference of the 4th induced electromotive force that P2 is the 3rd induced electromotive force that produces on the first receiving coil of the second transmitting coil and produces on the second receiving coil, A2 is the Amplitude Ratio of the 3rd induced electromotive force and the 4th induced electromotive force, 3rd induced electromotive force and the second magnetic moment meet preset relation, and the 4th induced electromotive force and the second magnetic moment meet preset relation.
In Fig. 2, transmitting coil T1 and T2 launches the electromagnetic wave of hundreds of kHz to a few MHz frequency respectively, electromagnetic wave can produce induced electromotive force V1 and V2 respectively after the propagation on stratum on receiving coil R1 and R2, the phase difference P between two receiving coil electromotive force and Amplitude Ratio A can be calculated after measuring, P1 and A1 represents the phase difference and Amplitude Ratio that T1 transmitting coil produces at receiving coil, P2 and A2 represents the phase difference and Amplitude Ratio that T2 transmitting coil produces on receiving coil.
Take equipment axis as rectangular coordinate system z-axis, the direction vertical with equipment axis is x-axis, the incline direction of tilt coil is in the xz plane of coordinate axes, and the induced electromotive force under such coordinate system on receiving coil has directionality, and the formula of concrete induced electromotive force is as follows:
In (1) formula, M
tfor the magnetic moment of transmitting coil,
for the Green's function that z direction magnetic dipole produces in x direction, the meaning of all the other similar expression formulas should be understood that θ mutually by this rule
tfor the angle of inclination of transmitting coil, θ
rfor the angle of inclination of receiving coil, φ is the azimuth of equipment.Can easily find out, if θ from (1) formula
t=θ
r=0, namely conventional electromagnetic resistivity equipment, then all items relevant with φ are zero, illustrates the electromotive force that measures and φ irrelevant, not there is directionality.For the device model as shown in Figure 2 that the present embodiment relates to, due to the inclination of receiving coil, i.e. θ
t=0, θ
r≠ 0, then just containing sin θ
titem be zero, be namely zero containing cos (2 φ) with the item relevant with orientation of sin (2 φ), and it is non-vanishing to contain the item of cos (φ) and sin (φ).But equipment just creeps in xz plane, then Green's function
item only surplus cos (φ) item that electromotive force is now relevant with orientation, obviously, bearing signal is now cosine function, and when 0 ° and 180 °, signal is maximum.
Step S308, obtains third phase potential difference P and the 3rd Amplitude Ratio A, wherein, and P=(P1+P2)/2, A=(A1+A2)/2.
Step S310, calculates resistivity R according to P and A, wherein, and the R that resistivity tools is corresponding different when different orientations.
Phase difference T1, T2 measured and Amplitude Ratio result compensate, the phase difference P=(P1+P2)/2 after compensation, A=(A1+A2)/2.By the phase difference after compensating with Amplitude Ratio utilizes phase difference, conversion plate between Amplitude Ratio and resistivity can convert apparent resistivity R to, the resistivity in the present embodiment is also referred to as apparent resistivity.Along with the rotation of equipment, equipment obtains different apparent resistivity values under different orientations.
Particularly, can obtain the value of third phase potential difference or the 3rd Amplitude Ratio acquisition R according to default corresponding relation, corresponding relation as shown in fig. 1b and fig. lc.
Step S312, obtains azimuthal corresponding relation of R and resistivity tools.
Particularly, on the one hand, obtain R with reference to azimuthal corresponding relation, wherein, with reference to azimuth be 0 ° of angle with formation plane; On the other hand, obtain the corresponding relation at R and true bearing angle, wherein, true bearing angle is 0 ° of angle with horizontal plane.
Particularly, according to device coordinate direction and 0 ° of azimuthal direction of definition, device orientation information is varies with cosine relation with the variation relation in orientation, refer to formula (1), namely orientation be 0 ° and 180 ° time azimuth information maximum, this rule will be obtain the important prerequisite of stratigraphic dip.
When resistivity tools rotates in oil reservoir, the change curve of apparent resistivity response with orientation can be obtained, see Fig. 4.No matter that the form of phase difference apparent resistivity or Amplitude Ratio apparent resistivity curve always changes between the form of sinusoidal and cosine, and maximum discovery is the orientation that the peak value of curve all appears at 0 ° and 180 °, this rule can be utilized to true bearing to mate with the orientation of definition just.
Fig. 4 a is the phase difference apparent resistivity according to the embodiment of the present invention and the schematic diagram with reference to azimuthal corresponding relation, and Fig. 4 b is the Amplitude Ratio apparent resistivity according to the embodiment of the present invention and the schematic diagram with reference to azimuthal corresponding relation.In Fig. 4 a and Fig. 4 b, the operating frequency of equipment is 2MHz, be transmitted into two receiving coil Point Sources apart from being 30in, two receiving coil spacing are 8in, and two receiving coils tilt 45 °, equipment relatively inclination layer is 30 °, and survey mark i.e. two receiving coil mid points are at target zone mid point.The upper and lower shoulder-bed resistivity (SBR) of model is 1.0Ohmm, target zone point horizontal and vertical resistivity be the isotropism of 10.0Ohmm and horizontal resistivity be 10.0Ohmm, vertical resistivity is anisotropy two kinds of situations of 50.0Ohmm, thickness 2m.
In actual measurement, can be 0 °, the orientation of surveying by the xz plane of equipment and direction setting during the earth horizontal plane, if stratum and plane-parallel, then the peak value of equipment measured curve will consistent with Fig. 4 a, appear at 0 ° and 180 °, now can be easy to judge that stratigraphic dip is 0 °.But there is a lot of situation sub-surface to be uneven with horizontal plane in reality, the bearing range of change is between-90 ° to 90 °, the peak value of the apparent resistivity curve with Orientation differences of therefore surveying also can occur between-90 ° to 90 °, and be unique, measured direction corresponding find peak value in this interval after is exactly 0 ° of definition in 2, namely, stratigraphic dip, Fig. 5 is the schematic diagram according to the phase difference apparent resistivity of the embodiment of the present invention and the corresponding relation at true bearing angle, all stratum in Fig. 5 and device parameter identical with Fig. 4 a, stratigraphic dip is now 30 °.As shown in Figure 5,0 ° of orientation of actual measurement is not peak value, finds log response data and find to have occurred peak value 30 ° time in-90 ° to 90 °.
Step S314, determines according to R and corresponding relation the current formation inclination angle that azimuth is corresponding.
In this step, first can obtain the extreme value in multiple R in preset range, wherein, extreme value comprises minimum value Rmin or maximum value Rmax, then can determine the true bearing angle that extreme value is corresponding and be current formation inclination angle with reference to azimuthal difference, preset range can be between positive and negative 90 °.
In fig .4, corresponding 0 ° of Rmin, in Figure 5, corresponding 30 ° of Rmin, 30 ° are now by the current formation inclination angle of apparent resistivity information acquisition.And the value at this current formation inclination angle upgrades once along with equipment often rotates a circle, therefore can fast monitored to the change of stratigraphic dip.
As can be seen from the above description, the embodiment of the present invention does not need to measure stratigraphic dip by other equipment, reduces cost.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1., by a stratigraphic dip measuring method for the resistivity tools of band tilt coil, it is characterized in that, comprising:
Obtain the first magnetic moment and the second magnetic moment, wherein, described first magnetic moment is the magnetic moment of the first transmitting coil, and described second magnetic moment is the magnetic moment of the second transmitting coil, and described first transmitting coil and described second transmitting coil are arranged at the two ends of the Electromagnetic Wave Propagation resistivity apparatus of band tilt coil;
Calculate first-phase potential difference P1 and the first Amplitude Ratio A1, wherein, the phase difference of the second induced electromotive force that described P1 is the first induced electromotive force of producing on the first receiving coil of the first transmitting coil and produces on the second receiving coil, described A1 is the Amplitude Ratio of described first induced electromotive force and the second induced electromotive force, described first receiving coil and described second receiving coil are between described first transmitting coil and described second transmitting coil, described first induced electromotive force and described first magnetic moment meet preset relation, described second induced electromotive force and described first magnetic moment meet preset relation,
Calculate second-phase potential difference P2 and the second Amplitude Ratio A2, wherein, the phase difference of the 4th induced electromotive force that described P2 is the 3rd induced electromotive force that produces on described first receiving coil of the second transmitting coil and produces on described second receiving coil, described A2 is the Amplitude Ratio of described 3rd induced electromotive force and described 4th induced electromotive force, described 3rd induced electromotive force and described second magnetic moment meet preset relation, and described 4th induced electromotive force and described second magnetic moment meet preset relation;
Obtain third phase potential difference P and the 3rd Amplitude Ratio A, wherein, P=(P1+P2)/2, A=(A1+A2)/2;
Resistivity R is calculated according to described P and described A, wherein, the R that resistivity tools is corresponding different when different orientations;
Obtain azimuthal corresponding relation of R and described resistivity tools;
The current formation inclination angle that described azimuth is corresponding is determined according to described R and described corresponding relation.
2. method according to claim 1, is characterized in that, obtains the first magnetic moment and the second magnetic moment comprises:
Obtaining preset value is described first magnetic moment of 1 and described second magnetic moment.
3. method according to claim 1, is characterized in that, calculates resistivity R comprise according to described P and described A:
The value that described third phase potential difference or described 3rd Amplitude Ratio obtain described R is obtained according to default corresponding relation.
4. method according to claim 1, is characterized in that,
The azimuthal corresponding relation obtaining R and described resistivity tools comprises:
Obtain described R with reference to azimuthal corresponding relation, wherein, described with reference to azimuth be 0 ° of angle with formation plane;
Obtain the corresponding relation at described R and true bearing angle, wherein, described true bearing angle is 0 ° of angle with horizontal plane.
5. method according to claim 4, is characterized in that, determines that current formation inclination angle corresponding to described azimuth comprises according to described R and described corresponding relation:
In preset range, obtain the extreme value in multiple described R, wherein, described extreme value comprises minimum value Rmin or maximum value Rmax;
Determine the described true bearing angle that described extreme value is corresponding and described be current formation inclination angle with reference to azimuthal difference.
6., by a stratigraphic dip measurement mechanism for the resistivity tools of band tilt coil, it is characterized in that, comprising:
First acquiring unit, for obtaining the first magnetic moment and the second magnetic moment, wherein, described first magnetic moment is the magnetic moment of the first transmitting coil, described second magnetic moment is the magnetic moment of the second transmitting coil, and described first transmitting coil and described second transmitting coil are arranged at the two ends of the Electromagnetic Wave Propagation resistivity apparatus of band tilt coil;
First computing unit, for calculating first-phase potential difference P1 and the first Amplitude Ratio A1, wherein, the phase difference of the second induced electromotive force that described P1 is the first induced electromotive force of producing on the first receiving coil of the first transmitting coil and produces on the second receiving coil, described A1 is the Amplitude Ratio of described first induced electromotive force and the second induced electromotive force, described first receiving coil and described second receiving coil are between described first transmitting coil and described second transmitting coil, described first induced electromotive force and described first magnetic moment meet preset relation, described second induced electromotive force and described first magnetic moment meet preset relation,
Second computing unit, for calculating second-phase potential difference P2 and the second Amplitude Ratio A2, wherein, the phase difference of the 4th induced electromotive force that described P2 is the 3rd induced electromotive force that produces on described first receiving coil of the second transmitting coil and produces on described second receiving coil, described A2 is the Amplitude Ratio of described 3rd induced electromotive force and described 4th induced electromotive force, described 3rd induced electromotive force and described second magnetic moment meet preset relation, and described 4th induced electromotive force and described second magnetic moment meet preset relation;
Second acquisition unit, for obtaining third phase potential difference P and the 3rd Amplitude Ratio A, wherein, P=(P1+P2)/2, A=(A1+A2)/2;
3rd acquiring unit, calculates resistivity R for root according to described P and described A, wherein, and the R that resistivity tools is corresponding different when different orientations;
4th acquiring unit, for obtaining azimuthal corresponding relation of R and described resistivity tools;
Determining unit, for determining according to described R and described corresponding relation the current formation inclination angle that described azimuth is corresponding.
7. device according to claim 6, is characterized in that, described first acquiring unit comprises:
First obtains subelement, is described first magnetic moment of 1 and described second magnetic moment for obtaining preset value.
8. device according to claim 6, is characterized in that,
Described determining unit is also for obtaining according to presetting corresponding relation the value that described third phase potential difference or described 3rd Amplitude Ratio obtain described R.
9. device according to claim 6, is characterized in that, described 4th acquiring unit comprises:
Second obtain subelement, for obtain described R with reference to azimuthal corresponding relation, wherein, described with reference to azimuth be 0 ° of angle with formation plane;
3rd obtains subelement, and for obtaining the corresponding relation at described R and true bearing angle, wherein, described true bearing angle is 0 ° of angle with horizontal plane.
10. device according to claim 9, is characterized in that, described determining unit comprises:
4th obtains subelement, and for obtaining the extreme value in multiple described R in preset range, wherein, described extreme value comprises minimum value Rmin or maximum value Rmax;
Determine subelement, for determine the described true bearing angle that described extreme value is corresponding and described be current formation inclination angle with reference to azimuthal difference.
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| CN201210550501.8A CN103015995B (en) | 2012-12-14 | 2012-12-14 | Method and device for measuring stratigraphic dip by resistivity device with tilt coil |
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| CN201210550501.8A CN103015995B (en) | 2012-12-14 | 2012-12-14 | Method and device for measuring stratigraphic dip by resistivity device with tilt coil |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512830A (en) * | 1993-11-09 | 1996-04-30 | Vector Magnetics, Inc. | Measurement of vector components of static field perturbations for borehole location |
| CN1632617A (en) * | 2003-12-25 | 2005-06-29 | 周仁安 | Measuring method and instrument for earth electromagnetic wave resistivity |
| CN102606138A (en) * | 2012-03-31 | 2012-07-25 | 中国电子科技集团公司第二十二研究所 | Method for correcting dielectric constant of electromagnetic wave resistivity logger while drilling by means of phase-amplitude method |
| CN102628357A (en) * | 2010-12-23 | 2012-08-08 | 中国石油化工股份有限公司 | Well logging data processing equipment |
| CN102678106A (en) * | 2012-05-02 | 2012-09-19 | 中国电子科技集团公司第二十二研究所 | Data processing method for LWD (Logging While Drilling) electromagnetic wave resistivity logging instrument |
| CN102692653A (en) * | 2012-06-06 | 2012-09-26 | 山东大学 | Method and system for measuring resistivity of underground medium by using single coil |
| CN102704921A (en) * | 2012-05-28 | 2012-10-03 | 中国石油天然气集团公司 | Measuring device for electrical resistivity of electromagnetic waves while drilling and measuring method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7382135B2 (en) * | 2003-05-22 | 2008-06-03 | Schlumberger Technology Corporation | Directional electromagnetic wave resistivity apparatus and method |
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2012
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512830A (en) * | 1993-11-09 | 1996-04-30 | Vector Magnetics, Inc. | Measurement of vector components of static field perturbations for borehole location |
| CN1632617A (en) * | 2003-12-25 | 2005-06-29 | 周仁安 | Measuring method and instrument for earth electromagnetic wave resistivity |
| CN102628357A (en) * | 2010-12-23 | 2012-08-08 | 中国石油化工股份有限公司 | Well logging data processing equipment |
| CN102606138A (en) * | 2012-03-31 | 2012-07-25 | 中国电子科技集团公司第二十二研究所 | Method for correcting dielectric constant of electromagnetic wave resistivity logger while drilling by means of phase-amplitude method |
| CN102678106A (en) * | 2012-05-02 | 2012-09-19 | 中国电子科技集团公司第二十二研究所 | Data processing method for LWD (Logging While Drilling) electromagnetic wave resistivity logging instrument |
| CN102704921A (en) * | 2012-05-28 | 2012-10-03 | 中国石油天然气集团公司 | Measuring device for electrical resistivity of electromagnetic waves while drilling and measuring method thereof |
| CN102692653A (en) * | 2012-06-06 | 2012-09-26 | 山东大学 | Method and system for measuring resistivity of underground medium by using single coil |
Non-Patent Citations (1)
| Title |
|---|
| 杨锦舟等.倾斜线圈随钻电磁波电阻率测量仪器基本原理及其在地质导向中的应用.《中国石油大学学报(自然科学版)》.2009,第33卷(第1期),第44-49页. * |
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