US20070125544A1 - Method and apparatus for providing pressure for well treatment operations - Google Patents
Method and apparatus for providing pressure for well treatment operations Download PDFInfo
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- US20070125544A1 US20070125544A1 US11/396,918 US39691806A US2007125544A1 US 20070125544 A1 US20070125544 A1 US 20070125544A1 US 39691806 A US39691806 A US 39691806A US 2007125544 A1 US2007125544 A1 US 2007125544A1
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- pumping units
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/2607—Surface equipment specially adapted for fracturing operations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/30—Specific pattern of wells, e.g. optimizing the spacing of wells
Definitions
- the present invention relates generally to well operations, and more particularly to methods and apparatuses for manufacturing well treatment fluid so as to conserve labor, infrastructure, and environmental impact.
- Stimulation and treatment processes often involve mobile equipment that is set up and put in place at a pad and then moved by truck from pad to pad within short time periods. Only during non-stimulation activities, such as water flood operations, can some operations occur simultaneously.
- This movement of equipment and personnel can involve complex logistics.
- the servicing and stimulation of wells can require a series of coordinated operations that begin with the supply by truck of equipment, supplies, fuel, and chemicals to the wellhead.
- the equipment is then set up and made ready with proppant and chemicals.
- equipment After completion of the well services, equipment must be broken down and made ready for transport to the next pad for service. Often, the next pad will be less than 500 feet away from the previously treated pad.
- additional trucks are often required to resupply and reequip an existing operation. This movement of equipment and supplies has environmental impacts, and the exposure of mobile equipment to adverse weather conditions can jeopardize well treatment operations and worker safety.
- an apparatus for providing pressure for a well fracturing operation can include one or more docking areas for docking one or more pumping units to a pressure manifold wherein the one or more docking areas are operable to provide access between one or more pumping units, and a structure operable to enclose the one or more docking areas and pumping units.
- the apparatus can also include a crane system, a central lubrication system connected to the one or more pumping units for providing lubrication fluid to the one or more pumping units, and a central power system connected to the one or more pumping units for starting the one or more pumping units.
- the central power system can include a hydraulic power system.
- the apparatus can include a central cooling system connected to the one or more pumping units for cooling the one or more pumping units.
- the central cooling system can include a cooling tower.
- the at least one of the one or more docking areas can extend outside of the structure.
- the apparatus can include a ventilation system.
- the apparatus can include a central fueling system connected to the one or more pumping units for supplying fuel to the one or more pumping units.
- the central fueling system supplies one or more fuels from the group consisting of: diesel, gasoline, natural gas, or electricity.
- the structure can include one or more structures from the group consisting of a supported fabric structure, a collapsible structure, a prefabricated structure, a retractable structure, a composite structure, a temporary structure, a prefabricated wall and roof structure, a deployable structure, a modular structure, a preformed structure, a mobile accommodation structure, and combinations thereof.
- the one or more docking areas can include walkways.
- the one or more docking areas can include one or more lubrication connections, coolant connections, fuel connections, power connections, and pressure connections.
- the one or more pumping units can include heaters.
- the apparatus can include one or more pumping units, a central fueling system connected to the one or more pumping units, a central power system connected to the one or more pumping units, a central lubrication system connected to the one or more pumping units, and a central cooling system connected to the one or more pumping units.
- the central power system can include a hydraulic power system.
- the central cooling system can include a cooling tower.
- the apparatus can include a ventilation system.
- the central fueling system can supply one or more fuels from the group consisting of: diesel, gasoline, natural gas, or electricity.
- a method for operating one or more pumping units for a well fracturing operation from a central land based location includes providing fuel to the one or more pumping units from the central location, providing lubrication to the one or more pumping units from the central location, providing power to the one or more pumping units from the central location, and providing coolant to the one or more pumping units from the central location.
- the power can be provided from a hydraulic power system.
- the coolant can be provided from a cooling tower.
- the method can include providing ventilation to the one or more pumping units.
- the fuel can include of one or more fuels from the group consisting of: diesel, gasoline, natural gas, or electricity.
- the method can also include enclosing the one or more pumping units in a structure.
- FIG. 1 is a diagram of a centralized well treatment facility.
- FIG. 2 is a flow diagram of a centralized well treatment facility.
- FIG. 3 is a flow diagram of central manifold used to treat wells and recover production fluid.
- FIG. 4 is a diagram of a multiple manifold well treatment system.
- FIG. 5 is a schematic of a manifold apparatus for directing treatment fluid.
- FIG. 6 is a schematic of a manifold apparatus for directing treatment fluid.
- FIG. 7 is a schematic of a simultaneous fracturing method.
- FIG. 8 is an aerial view of the pumping grid apparatus.
- FIG. 9 is an aerial view of a structure that can enclose the pumping grid apparatus.
- FIG. 10 is a side view of the pumping grid apparatus.
- FIG. 11 is an aerial view of the fracturing operations factory and a remote pumping grid apparatus.
- a well treatment operations factory 100 includes one or more of the following: a centralized power unit 103 ; a pumping grid 111 ; a central manifold 107 ; a proppant storage system 106 ; a chemical storage system 112 ; and a blending unit 105 .
- the well treatment factory may be set upon a pad from which many other wellheads on other pads 110 may be serviced.
- the well treatment operations factory may be connected via the central manifold 107 to at least a first pad 101 containing one or more wellheads via a first connection 108 and at least a second pad 102 containing one or more wellheads via a second connection 109 .
- the connection may be a standard piping or tubing known to one of ordinary skill in the art.
- the factory may be open, or it may be enclosed at its location in various combinations of structures including a supported fabric structure, a collapsible structure, a prefabricated structure, a retractable structure, a composite structure, a temporary building, a prefabricated wall and roof unit, a deployable structure, a modular structure, a preformed structure, or a mobile accommodation unit.
- the factory may be circular and may incorporate alleyways for maintenance access and process fluid flow.
- the factory, and any or all of its components can be climate controlled, air ventilated and filtered, and/or heated.
- the heating can be accomplished with radiators, heat plumbing, natural gas heaters, electric heaters, diesel heaters, or other known equivalent devices.
- the heating can be accomplished by convection, radiation, conduction, or other known equivalent methods.
- the unit provides electrical power to all of the subunits within the well operations factory 100 via electrical connections.
- the centralized power unit 103 can be powered by liquid fuel, natural gas, or other equivalent fuel and may optionally be a cogeneration power unit.
- the unit may comprise a single trailer with subunits, each subunit with the ability to operate independently.
- the unit may also be operable to extend power to one or more outlying wellheads.
- the proppant storage system 106 is connected to the blending unit 105 and includes automatic valves and a set of tanks that contain proppant.
- Each tank can be monitored for level, material weight, and the rate at which proppant is being consumed. This information can be transmitted to a controller or control area.
- Each tank is capable of being filled pneumatically and can be emptied through a calibrated discharge chute by gravity. Gravity can be the substantial means of delivering proppant from the proppant tank.
- the tanks may also be agitated in the event of clogging or unbalanced flow.
- the proppant tanks can contain a controlled, calibrated orifice.
- Each tank's level, material weight, and calibrated orifice can be used to monitor and control the amount of desired proppant delivered to the blending unit. For instance, each tank's orifice can be adjusted to release proppant at faster or slower rates depending upon the needs of the formation and to adjust for the flow rates measured by the change in weight of the tank.
- Each proppant tank can contain its own air ventilation and filtering.
- the tanks 106 can be arranged around each blending unit 105 within the enclosure, with each tank's discharge chute 803 located above the blending unit 105 .
- the discharge chute can be connected to a surge hopper 804 .
- proppant is released from the proppant storage unit 106 through a controllable gate in the unit.
- the surge hopper contains a controlled, calibrated orifice or aperture 807 that releases proppant from the surge hopper at a desired rate.
- the amount of proppant in the surge hopper is maintained at a substantially constant level.
- Each tank can be connected to a pneumatic refill line 805 .
- the tanks' weight can be measured by a measurement lattice 806 or by weight sensors or scales.
- the weight of the tanks can be used to determine how much proppant is being used during a well stimulation operation, how much total proppant was used at the completion of a well stimulation operation, and how much proppant remains in the storage unit at any given time.
- Tanks may be added to or removed from the storage system as needed. Empty storage tanks may be in the process of being filled by proppant at the same time full or partially full tanks are being used, allowing for continuous operation.
- the tanks can be arranged around a calibrated v-belt conveyor.
- a resin-coated proppant may be used by the addition of a mechanical proppant coating system.
- the coating system may be a Muller System.
- the chemical storage system 112 is connected to the blending unit and can include tanks for breakers, gel additives, crosslinkers, and liquid gel concentrate.
- the tanks can have level control systems such as a wireless hydrostatic pressure system and may be insulated and heated. Pressurized tanks may be used to provide positive pressure displacement to move chemicals, and some tanks may be agitated and circulated.
- the chemical storage system can continuously meter chemicals through the use of additive pumps which are able to meter chemical solutions to the blending unit 105 at specified rates as determined by the required final concentrations and the pump rates of the main treatment fluid from the blending unit.
- the chemical storage tanks can include weight sensors that can continuously monitor the weight of the tanks and determine the quantity of chemicals used by mass or weight in real-time, as the chemicals are being used to manufacture well treatment fluid.
- Chemical storage tanks can be pressurized using compressed air or nitrogen. They can also be pressurized using variable speed pumps using positive displacement to drive fluid flow.
- the quantities and rates of chemicals added to the main fluid stream are controlled by valve-metering control systems.
- the valve-metering can be magnetic mass or volumetric mass meters.
- chemical additives could be added to the main treatment fluid via aspiration (Venturi Effect).
- the rates that the chemical additives are aspirated into the main fluid stream can be controlled via adjustable, calibrated apertures located between the chemical storage tank and the main fluid stream.
- the main fluid stream may be either the main fracture fluid being pumped or may be a slip stream off of a main fracture fluid stream.
- the components of the chemical storage system are modularized allowing pumps, tanks, or blenders to be added or removed independently.
- the blending unit 105 is connected to the chemical storage system 112 , the proppant storage system 106 , a water source 202 , and a pumping grid 111 and may prepare a fracturing fluid, complete with proppant and chemical additives or modifiers, by mixing and blending fluids and chemicals at continuous rates according to the needs of a well formation.
- the blending unit 105 comprises a preblending unit 201 wherein water is fed from a water supply 202 and dry powder (guar) or liquid gel concentrate can be metered from a storage tank by way of a screw conveyor or pump into the preblender's fluid stream where it is mixed with water and blended with various chemical additives and modifiers provided by the chemical storage system 112 .
- This mixture is fed into the blending unit's hydration device, which provides a first-in-first-out laminar flow.
- This now near fully hydrated fluid stream is blended in the mixer 202 of the blending unit 105 with proppant from the proppant storage system to create the final fracturing fluid. This process can be accomplished at downhole pump rates.
- the blending unit can modularized allowing its components to be easily replaced.
- the mixing apparatus is a modified Halliburton Growler mixer modified to blend proppant and chemical additives to the base fluid without destroying the base fluid properties but still providing ample energy for the blending of proppant into a near fully hydrated fracturing fluid.
- the final fluid can be directed to a pumping grid 111 and subsequently directed to a central manifold 107 , which can connect and direct the fluid via connection 109 , 204 , or 205 to multiple wells 110 simultaneously.
- the fracturing operations factory can comprise one or more blending units each coupled to one or more of the control units, proppant storage system, the chemical storage system, the pre-gel blending unit, a water supply, the power unit, and the pumping grid. Each blending unit can be used substantially simultaneously with any other blending unit and can be blending well treatment fluid of the same or different composition than any other blending unit.
- the blending unit does not comprise a pre-blending unit.
- the fracturing operations factory contains a separate pre-gel blending unit.
- the pre-gel blending unit is fed from a water supply and dry powder (guar) can be metered from a storage tank into the preblender's fluid stream where it is mixed with water and blended and can be subsequently transferred to the blending unit.
- the pre-gel blending unit can be modular, can also be enclosed in the factory, and can be connected to the central control system.
- the means for simultaneously flowing treatment fluid is a central manifold 107 .
- the central manifold 107 is connected to the pumping grid 111 and is operable to flow stimulation fluid, for example, to multiple wells at different pads simultaneously.
- the stimulation fluid can comprise proppant, gelling agents, friction reducers, reactive fluid such as hydrochloric acid, and can be aqueous or hydrocarbon based.
- the manifold 107 is operable to treat simultaneously two separate wells, for example, as shown in FIG. 2 via connections 204 and 205 . In this example, multiple wells can be fractured simultaneously, or a treatment fluid can be flowed simultaneously to multiple wells.
- the treatment fluid flowed can be of the same composition or different.
- connection 109 between the central manifold 107 and a well location can be used in the opposite direction as shown in FIG. 2 to flow a production fluid, such as water or hydrocarbons, or return the well treatment fluid 301 from the well location to the manifold.
- a production fluid such as water or hydrocarbons
- the production fluid can be directed to a production system 303 where it can be stored or processed or, in the case of the returning well treatment fluid, to a reclamation system that can allow components of returning fluid to be reused.
- the manifold is operable to receive production fluid or well treatment fluid from a first well location 101 while simultaneously flowing treatment fluid 302 using a second connection 108 to a second well location 102 .
- the central manifold 107 is also operable to receive production fluid from both the first well location and the second well location simultaneously.
- the first and second well locations can be at the same or different pads (as shown in FIG. 3 ).
- the manifold is also operable to extend multiple connections to a single well location. In reference to FIG. 2 , in one embodiment, two connections are extended from the manifold to a single well location.
- One connection 109 may be used to deliver well treatment fluid to the well location while the other connection 203 may be used to deliver production fluid or return well treatment fluid from the well location to the central manifold 107 .
- the central manifold 107 can be connected to one or more additional manifolds 405 .
- the additional manifolds are operable to connect to multiple well locations 401 - 404 and deliver well treatment fluids and receive production fluids via connections 406 - 409 , respectively, in the same way as the central manifold 107 described above in reference to FIGS. 2 and 3 .
- the additional manifolds can be located at the well pads.
- the central manifold has an input 501 that accepts pressurized stimulating fluid, fracturing fluid, or well treatment fluid from a pump truck or a pumping grid 111 .
- the fluid flows into input 501 and through junctions 502 and 503 to lines 504 and 505 .
- Line 504 contains a valve 506 , a pressure sensor 507 , and an additional valve 508 .
- the line is connected to well head 101 .
- Line 505 contains a valve 511 , a pressure sensor 512 , and an additional valve 513 .
- These valves may be either plug valves or check valves and can be manually or electronically monitored and controlled.
- the pressure sensor may be a pressure transducer and may also be manually or electronically monitored or controlled.
- Line 504 is connected to well head 101 and line 505 is connected to well head 102 .
- This configuration allows wells 101 and 102 to be stimulated individually and at a higher rate, by opening the valves along the line to the well to be treated while the valves along the other line are closed, or simultaneously at a lower rate, by opening the valves on both lines at the same time.
- this architecture can be easily expanded to accommodate additional wells by the addition of junctions, lines, valves, and pressure sensors as illustrated. This architecture also allows monitoring the operations of the manifold and detecting leaks. By placing pressure sensors 507 and 512 between valves 506 and 508 and valves 511 and 513 respectively, the pressure of lines 504 and 505 can be readily determined during various phases of operation.
- valves 511 and 513 are closed.
- Pressure sensor 507 can detect the pressure within the active line 504
- pressure sensor 512 can be used to detect if there is any leakage, as it would be expected that the pressure in line 505 in this configuration would be minimal.
- only a single valve is used along each of lines 504 and 505 .
- This embodiment can be used to stimulate wells simultaneously or singly as well.
- the manifold of this embodiment can also work in reverse and transfer fluid from the wellhead back through the manifold and to the central location.
- input 501 can be connected to a production system or reclamation system, for example, and the valves along the line connected to the wellhead in which it is desirable to recover fluid are open.
- the valves along the other lines may be open or closed depending on whether it is desirable to recover fluids from the wellheads connected to those lines.
- Production fluid or stimulation fluid can be returned from the wellhead to those systems respectively.
- This manifold can be located at the central location or at a remote pad.
- the central manifold contains two inputs 601 and 602 that accept pressurized stimulating fluid, fracturing fluid, or well treatment fluid from pump trucks or a pumping grid 111 .
- Inputs 601 and 602 can accept fluid of different or the same compositions at similar or different pressures and rates.
- the fluid pumped through input 602 travels through junctions 603 and 605 .
- the junctions are further connected to lines 610 and 611 .
- the fluid pumped through input 601 travels through junctions 604 and 615 .
- the junctions are further connected to lines 609 and 612 .
- Lines 609 , 610 , 611 , and 612 may each contain a valve 606 , a pressure sensor 607 , and an additional valve 608 , or may contain only a single valve. These valves may be either plug valves or check valves and can be manually or electronically monitored and controlled.
- the pressure sensor may be a pressure transducer and may also be manually or electronically monitored or controlled.
- valves on lines 609 and 610 are open and the valves on lines 611 and 612 are closed. Lines 609 and 610 are coupled to wellhead 101 through junction 616 .
- the valves on lines 610 and 611 are both open. Fluid from input 601 can be delivered to well 101 and fluid from input 602 can be delivered to well 102 simultaneously by closing the valves on lines 610 and 612 and opening the valves on lines 611 and 609 .
- the delivery of fluid to well 102 works analogously. As shown in FIG.
- the manifold can be easily expanded to include additional wells through additional junctions, lines, and valves. Furthermore, as described in reference to FIG. 4 , the manifold of this embodiment can also work in reverse and transfer fluid from the wellhead back through the manifold and to the central location.
- either or both inputs 601 and 602 can be connected to a production system or reclamation system, for example, and the valves along the line connected to the wellhead in which it is desirable to recover fluid are open.
- the valves along the other lines may be open or closed depending on whether it is desirable to recover fluids from the wellheads connected to those lines.
- Production fluid or stimulation fluid can be returned from the wellhead to those systems respectively.
- This manifold can be located at the central location or at a remote pad.
- multiple manifold trailers 701 and 702 may be used at the central location where the stimulation fluid is manufactured and pressurized.
- the manifold trailers themselves are well known in the art.
- Each manifold trailer is connected to pressurized stimulating fluid through pump trucks 703 or a pumping grid 111 .
- a line from each manifold trailer can connect directly to a well head to stimulate it directly, or it can further be connected to the manifolds described that are further connected to well locations.
- pumping modules can be hauled to the fracturing operation factory site by truck, and pinned or bolted or otherwise located together on the ground.
- Pumping equipment grid modules can be added or taken away to accommodate the number of pumping units to be used on site.
- the pressure manifold will interface with the pumping equipment grid modules and support a crane.
- the grid system can be configured with various piping or electrical connections that each pumping unit may require for power, fuel, cooling, and lubrication.
- the grid system would incorporate space to allow access to the pumping units' main components for easy maintenance.
- the grid comprises one or more pumps 801 that can be electric, gas, diesel, or natural gas powered.
- the grid can also contain spaces or docks 810 operable to receive equipment, such as pumps and other devices, modularized to fit within such spaces.
- the pumping grid 111 can include walkways 807 that provide access to pumps or any other equipment docked in the grid spaces.
- the grid's spaces or docks 810 can be prewired and preplumbed and can contain lube oil, fueling, power, and cooling capabilities and connections for the pumps 801 to manifold 107 (shown in FIG. 10 ).
- the pumps 801 that connect to the grid 111 can be freestanding such as pumps 801 , or the pumps 809 can be attached to trucks 808 .
- Pumps 809 can each contain its own fueling, cooling, lubrication, and power sources.
- Pumps 801 can rely on centralized fuel, coolant, lubrication, and power sources.
- the fuel for the pumps 801 can be supplied to the pumps 801 from a single central fueling system 803 through piping or tubing well known in the art.
- the pumps 801 can include hydraulic starting mechanisms. Hydraulic power for the starting mechanisms can be supplied to the pumps 801 from a single central power system 804 using tubing or piping well known in the art. In the event electric pumps are used, the power system 804 can provide electricity to the pumps via wires.
- the lubrication of the pumps 801 can also be centralized. Lubrication fluid can be supplied from a central lubrication system 805 to the pumps 801 using tubing or piping well known in the art.
- Coolant for the pumps can be provided from a central source such as a coolant or water tower that can generate less noise than local fans.
- the grid is operable to accept connections to proppant storage and metering systems, chemical storage and metering systems, and blending units.
- the pumping grid can also have a crane 806 that can assist in the replacement or movement of pumps, manifolds, or other equipment.
- the pumping grid 111 can be enclosed in a structure 901 .
- the structure can be a supported fabric structure, a collapsible structure, a prefabricated structure, a retractable structure, a composite structure, a temporary structure, a prefabricated wall and roof structure, a deployable structure, a modular structure, a preformed structure, a mobile accommodation structure, and combinations thereof.
- the pumping grid 111 can also be partially enclosed by structure 901 and partially exposed, as shown by pump trucks 808 , which are connected to the pumping grid outside of the structure 901 .
- the pumping grid 111 can also include a ventilation system 902 that can release exhaust from the pumps and/or ventilate the inside of the structure 901 .
- a central manifold 107 can accept connections to wells and can be connected to the pumping grid.
- the central manifold and pumping grid are operable to simultaneously treat both a first well head connected via a first connection and a second well head connected via a second connection with the stimulation fluid manufactured by the factory and connected to the pumping grid.
- the pumping grid can be located at a different pad miles away from the fracturing operations factory 100 .
- An auxiliary pumping system 1102 which itself can include pumping trucks, manifold trailers 703 shown in FIG. 7 , or standalone pumps, can pump fracturing fluid from the fracturing operations factory 100 through connection 1101 to the pumping grid 111 .
- the pumping grid 111 can next pump the fluid to production site 101 , for example. In this way, the operations of the fracturing factory 100 can be extended to remote pads through assembly and reassembly of the pumping grid 111 and connection 1101 .
- the operations of the chemical storage system, proppant storage system, blending unit, pumping grid, power unit, and manifolds are controlled, coordinated, and monitored by a central control system.
- the central control system can be an electronic computer system capable of receiving analog or digital signals from sensors and capable of driving digital, analog, or other variety of controls of the various components in the fracturing operations factory.
- the control system can be located within the factory enclosure, if any, or it can be located at a remote location.
- the central control system may use all of the sensor data from all units and the drive signals from their individual subcontrollers to determine subsystem trajectories.
- control over the manufacture, pumping, gelling, blending, and resin coating of proppant by the control system can be driven by desired product properties such as density, rate, viscosity, etc.
- Control can also be driven by external factors affecting the subunits such as dynamic or steady-state bottlenecks.
- Control can be exercised substantially simultaneously with both the determination of a desired product property, or with altering external conditions. For instance, once it is determined that a well treatment fluid with a specific density is desired, a well treatment fluid of the specific density can be manufactured virtually simultaneously by entering the desired density into the control system.
- the control system will substantially simultaneously cause the delivery of the proppant and chemical components comprising a well treatment fluid with the desired property to the blending unit where it can be immediately pumped to the desired well location.
- Well treatment fluids of different compositions can also be manufactured substantially simultaneously with one another and substantially simultaneously with the determination of desired product properties through the use and control of multiple blending units each connected to the control unit, proppant storage system, chemical storage system, water source, and power unit.
- the central control system can include such features as: (1) virtual inertia, whereby the rates of the subsystems (chemical, proppant, power, etc.) are coupled despite differing individual responses; (2) backward capacitance control, whereby the tub level controls cascade backward through the system; (3) volumetric observer, whereby sand rate errors are decoupled and proportional ration control is allowed without steady-state error.
- the central control system can also be used to monitor equipment health and status.
- the control system can report the quantity and rate usage of each component comprising the fluid. For instance, the rate or total amount of proppant, chemicals, water, or electricity consumed for a given well in an operation over any time period can be immediately reported both during and after the operation. This information can be coordinated with cost schedules or billing schedules to immediately compute and report incremental or total costs of operation.
- the present invention can be used both for onshore and offshore operations using existing or specialized equipment or a combination of both. Such equipment can be modularized to expedite installation or replacement.
- the present invention may be enclosed in a permanent, semipermanent, or mobile structure.
- the present invention can be adapted for multiple uses.
- multiple well sites may be treated, produced, or treated and produced sequentially or simultaneously from a single central location.
- the invention is capable of considerable additional modification, alteration, and equivalents in form and function, as will occur to those ordinarily skilled in the art having the benefit of this disclosure.
- the depicted and described embodiments of the invention are exemplary only, and are not exhaustive of the scope of the invention. Consequently, the invention is intended to be limited only by the spirit and scope of the appended claims.
Abstract
An apparatus for providing pressure for a well fracturing operation is disclosed. The apparatus includes one or more docking areas for docking one or more pumping units to a pressure manifold wherein the one or more docking areas are operable to provide access between one or more pumping units, and a structure operable to enclose the one or more docking areas and pumping units. An apparatus for providing pressure for a well fracturing operation is disclosed. The apparatus includes one or more pumping units, a central fueling system connected to the one or more pumping units, a central power system connected to the one or more pumping units, a central lubrication system connected to the one or more pumping units, and a central cooling system connected to the one or more pumping units.
Description
- This application is a continuation-in-part of application Ser. No. 11/291,496 filed Dec. 1, 2005.
- The present invention relates generally to well operations, and more particularly to methods and apparatuses for manufacturing well treatment fluid so as to conserve labor, infrastructure, and environmental impact.
- In the production of oil and gas in the field, it is often required to stimulate and treat several well locations within a designated amount of time. Stimulation and treatment processes often involve mobile equipment that is set up and put in place at a pad and then moved by truck from pad to pad within short time periods. Only during non-stimulation activities, such as water flood operations, can some operations occur simultaneously.
- This movement of equipment and personnel can involve complex logistics. The servicing and stimulation of wells can require a series of coordinated operations that begin with the supply by truck of equipment, supplies, fuel, and chemicals to the wellhead. The equipment is then set up and made ready with proppant and chemicals. After completion of the well services, equipment must be broken down and made ready for transport to the next pad for service. Often, the next pad will be less than 500 feet away from the previously treated pad. In addition, due to the limited storage capacity of the moving equipment for chemicals and equipment, additional trucks are often required to resupply and reequip an existing operation. This movement of equipment and supplies has environmental impacts, and the exposure of mobile equipment to adverse weather conditions can jeopardize well treatment operations and worker safety.
- In general, an apparatus for providing pressure for a well fracturing operation is disclosed. The apparatus can include one or more docking areas for docking one or more pumping units to a pressure manifold wherein the one or more docking areas are operable to provide access between one or more pumping units, and a structure operable to enclose the one or more docking areas and pumping units. The apparatus can also include a crane system, a central lubrication system connected to the one or more pumping units for providing lubrication fluid to the one or more pumping units, and a central power system connected to the one or more pumping units for starting the one or more pumping units. The central power system can include a hydraulic power system. The apparatus can include a central cooling system connected to the one or more pumping units for cooling the one or more pumping units. The central cooling system can include a cooling tower. The at least one of the one or more docking areas can extend outside of the structure. The apparatus can include a ventilation system. The apparatus can include a central fueling system connected to the one or more pumping units for supplying fuel to the one or more pumping units. The central fueling system supplies one or more fuels from the group consisting of: diesel, gasoline, natural gas, or electricity. The structure can include one or more structures from the group consisting of a supported fabric structure, a collapsible structure, a prefabricated structure, a retractable structure, a composite structure, a temporary structure, a prefabricated wall and roof structure, a deployable structure, a modular structure, a preformed structure, a mobile accommodation structure, and combinations thereof. The one or more docking areas can include walkways. The one or more docking areas can include one or more lubrication connections, coolant connections, fuel connections, power connections, and pressure connections. The one or more pumping units can include heaters.
- An apparatus for providing pressure for a well fracturing operation is disclosed. The apparatus can include one or more pumping units, a central fueling system connected to the one or more pumping units, a central power system connected to the one or more pumping units, a central lubrication system connected to the one or more pumping units, and a central cooling system connected to the one or more pumping units. The central power system can include a hydraulic power system. The central cooling system can include a cooling tower. The apparatus can include a ventilation system. The central fueling system can supply one or more fuels from the group consisting of: diesel, gasoline, natural gas, or electricity.
- A method for operating one or more pumping units for a well fracturing operation from a central land based location is disclosed. The method includes providing fuel to the one or more pumping units from the central location, providing lubrication to the one or more pumping units from the central location, providing power to the one or more pumping units from the central location, and providing coolant to the one or more pumping units from the central location. The power can be provided from a hydraulic power system. The coolant can be provided from a cooling tower. The method can include providing ventilation to the one or more pumping units. The fuel can include of one or more fuels from the group consisting of: diesel, gasoline, natural gas, or electricity. The method can also include enclosing the one or more pumping units in a structure.
- A more complete understanding of the present disclosure and advantages thereof may be acquired by referring to the following description taken in conjunction with the accompanying drawings. The drawings illustrate only exemplary embodiments and are not intended to be limiting against the invention.
-
FIG. 1 is a diagram of a centralized well treatment facility. -
FIG. 2 is a flow diagram of a centralized well treatment facility. -
FIG. 3 is a flow diagram of central manifold used to treat wells and recover production fluid. -
FIG. 4 is a diagram of a multiple manifold well treatment system. -
FIG. 5 is a schematic of a manifold apparatus for directing treatment fluid. -
FIG. 6 is a schematic of a manifold apparatus for directing treatment fluid. -
FIG. 7 is a schematic of a simultaneous fracturing method. -
FIG. 8 is an aerial view of the pumping grid apparatus. -
FIG. 9 is an aerial view of a structure that can enclose the pumping grid apparatus. -
FIG. 10 is a side view of the pumping grid apparatus. -
FIG. 11 is an aerial view of the fracturing operations factory and a remote pumping grid apparatus. - The details of the methods and apparatuses according to the present invention will now be described with reference to the accompanying drawings.
- In reference to
FIG. 1 , in one embodiment, a welltreatment operations factory 100 includes one or more of the following: acentralized power unit 103; apumping grid 111; acentral manifold 107; aproppant storage system 106; achemical storage system 112; and ablending unit 105. In this and other embodiments, the well treatment factory may be set upon a pad from which many other wellheads onother pads 110 may be serviced. The well treatment operations factory may be connected via thecentral manifold 107 to at least afirst pad 101 containing one or more wellheads via afirst connection 108 and at least asecond pad 102 containing one or more wellheads via asecond connection 109. The connection may be a standard piping or tubing known to one of ordinary skill in the art. The factory may be open, or it may be enclosed at its location in various combinations of structures including a supported fabric structure, a collapsible structure, a prefabricated structure, a retractable structure, a composite structure, a temporary building, a prefabricated wall and roof unit, a deployable structure, a modular structure, a preformed structure, or a mobile accommodation unit. The factory may be circular and may incorporate alleyways for maintenance access and process fluid flow. The factory, and any or all of its components can be climate controlled, air ventilated and filtered, and/or heated. The heating can be accomplished with radiators, heat plumbing, natural gas heaters, electric heaters, diesel heaters, or other known equivalent devices. The heating can be accomplished by convection, radiation, conduction, or other known equivalent methods. - In one embodiment of the
centralized power unit 103, the unit provides electrical power to all of the subunits within thewell operations factory 100 via electrical connections. Thecentralized power unit 103 can be powered by liquid fuel, natural gas, or other equivalent fuel and may optionally be a cogeneration power unit. The unit may comprise a single trailer with subunits, each subunit with the ability to operate independently. The unit may also be operable to extend power to one or more outlying wellheads. - In one embodiment, the
proppant storage system 106 is connected to theblending unit 105 and includes automatic valves and a set of tanks that contain proppant. Each tank can be monitored for level, material weight, and the rate at which proppant is being consumed. This information can be transmitted to a controller or control area. Each tank is capable of being filled pneumatically and can be emptied through a calibrated discharge chute by gravity. Gravity can be the substantial means of delivering proppant from the proppant tank. The tanks may also be agitated in the event of clogging or unbalanced flow. The proppant tanks can contain a controlled, calibrated orifice. Each tank's level, material weight, and calibrated orifice can be used to monitor and control the amount of desired proppant delivered to the blending unit. For instance, each tank's orifice can be adjusted to release proppant at faster or slower rates depending upon the needs of the formation and to adjust for the flow rates measured by the change in weight of the tank. Each proppant tank can contain its own air ventilation and filtering. In reference toFIG. 8 , thetanks 106 can be arranged around each blendingunit 105 within the enclosure, with each tank'sdischarge chute 803 located above theblending unit 105. The discharge chute can be connected to asurge hopper 804. In one embodiment, proppant is released from theproppant storage unit 106 through a controllable gate in the unit. When the gate is open, proppant travels from the proppant storage unit into thedischarge chute 803. The discharge chute releases the proppant into the surge hopper. In this embodiment, the surge hopper contains a controlled, calibrated orifice oraperture 807 that releases proppant from the surge hopper at a desired rate. The amount of proppant in the surge hopper is maintained at a substantially constant level. Each tank can be connected to apneumatic refill line 805. The tanks' weight can be measured by ameasurement lattice 806 or by weight sensors or scales. The weight of the tanks can be used to determine how much proppant is being used during a well stimulation operation, how much total proppant was used at the completion of a well stimulation operation, and how much proppant remains in the storage unit at any given time. Tanks may be added to or removed from the storage system as needed. Empty storage tanks may be in the process of being filled by proppant at the same time full or partially full tanks are being used, allowing for continuous operation. The tanks can be arranged around a calibrated v-belt conveyor. In addition, a resin-coated proppant may be used by the addition of a mechanical proppant coating system. The coating system may be a Muller System. - In one embodiment, the
chemical storage system 112 is connected to the blending unit and can include tanks for breakers, gel additives, crosslinkers, and liquid gel concentrate. The tanks can have level control systems such as a wireless hydrostatic pressure system and may be insulated and heated. Pressurized tanks may be used to provide positive pressure displacement to move chemicals, and some tanks may be agitated and circulated. The chemical storage system can continuously meter chemicals through the use of additive pumps which are able to meter chemical solutions to theblending unit 105 at specified rates as determined by the required final concentrations and the pump rates of the main treatment fluid from the blending unit. The chemical storage tanks can include weight sensors that can continuously monitor the weight of the tanks and determine the quantity of chemicals used by mass or weight in real-time, as the chemicals are being used to manufacture well treatment fluid. Chemical storage tanks can be pressurized using compressed air or nitrogen. They can also be pressurized using variable speed pumps using positive displacement to drive fluid flow. The quantities and rates of chemicals added to the main fluid stream are controlled by valve-metering control systems. The valve-metering can be magnetic mass or volumetric mass meters. In addition, chemical additives could be added to the main treatment fluid via aspiration (Venturi Effect). The rates that the chemical additives are aspirated into the main fluid stream can be controlled via adjustable, calibrated apertures located between the chemical storage tank and the main fluid stream. In the case of fracturing operations, the main fluid stream may be either the main fracture fluid being pumped or may be a slip stream off of a main fracture fluid stream. In one embodiment, the components of the chemical storage system are modularized allowing pumps, tanks, or blenders to be added or removed independently. - In reference to
FIG. 2 , in one embodiment, theblending unit 105 is connected to thechemical storage system 112, theproppant storage system 106, awater source 202, and apumping grid 111 and may prepare a fracturing fluid, complete with proppant and chemical additives or modifiers, by mixing and blending fluids and chemicals at continuous rates according to the needs of a well formation. Theblending unit 105 comprises apreblending unit 201 wherein water is fed from awater supply 202 and dry powder (guar) or liquid gel concentrate can be metered from a storage tank by way of a screw conveyor or pump into the preblender's fluid stream where it is mixed with water and blended with various chemical additives and modifiers provided by thechemical storage system 112. These chemicals may include crosslinkers, gelling agents, viscosity altering chemicals, PH buffers, modifiers, surfactants, breakers, and stabilizers. This mixture is fed into the blending unit's hydration device, which provides a first-in-first-out laminar flow. This now near fully hydrated fluid stream is blended in themixer 202 of theblending unit 105 with proppant from the proppant storage system to create the final fracturing fluid. This process can be accomplished at downhole pump rates. The blending unit can modularized allowing its components to be easily replaced. In one embodiment, the mixing apparatus is a modified Halliburton Growler mixer modified to blend proppant and chemical additives to the base fluid without destroying the base fluid properties but still providing ample energy for the blending of proppant into a near fully hydrated fracturing fluid. The final fluid can be directed to apumping grid 111 and subsequently directed to acentral manifold 107, which can connect and direct the fluid viaconnection multiple wells 110 simultaneously. In one embodiment, the fracturing operations factory can comprise one or more blending units each coupled to one or more of the control units, proppant storage system, the chemical storage system, the pre-gel blending unit, a water supply, the power unit, and the pumping grid. Each blending unit can be used substantially simultaneously with any other blending unit and can be blending well treatment fluid of the same or different composition than any other blending unit. - In one embodiment, the blending unit does not comprise a pre-blending unit. Instead, the fracturing operations factory contains a separate pre-gel blending unit. The pre-gel blending unit is fed from a water supply and dry powder (guar) can be metered from a storage tank into the preblender's fluid stream where it is mixed with water and blended and can be subsequently transferred to the blending unit. The pre-gel blending unit can be modular, can also be enclosed in the factory, and can be connected to the central control system.
- In one embodiment, the means for simultaneously flowing treatment fluid is a
central manifold 107. Thecentral manifold 107 is connected to thepumping grid 111 and is operable to flow stimulation fluid, for example, to multiple wells at different pads simultaneously. The stimulation fluid can comprise proppant, gelling agents, friction reducers, reactive fluid such as hydrochloric acid, and can be aqueous or hydrocarbon based. The manifold 107 is operable to treat simultaneously two separate wells, for example, as shown inFIG. 2 viaconnections FIG. 3 , theconnection 109 between thecentral manifold 107 and a well location can be used in the opposite direction as shown inFIG. 2 to flow a production fluid, such as water or hydrocarbons, or return thewell treatment fluid 301 from the well location to the manifold. From thecentral manifold 107, the production fluid can be directed to aproduction system 303 where it can be stored or processed or, in the case of the returning well treatment fluid, to a reclamation system that can allow components of returning fluid to be reused. The manifold is operable to receive production fluid or well treatment fluid from afirst well location 101 while simultaneously flowingtreatment fluid 302 using asecond connection 108 to asecond well location 102. Thecentral manifold 107 is also operable to receive production fluid from both the first well location and the second well location simultaneously. In this embodiment, the first and second well locations can be at the same or different pads (as shown inFIG. 3 ). The manifold is also operable to extend multiple connections to a single well location. In reference toFIG. 2 , in one embodiment, two connections are extended from the manifold to a single well location. Oneconnection 109 may be used to deliver well treatment fluid to the well location while theother connection 203 may be used to deliver production fluid or return well treatment fluid from the well location to thecentral manifold 107. - In reference to
FIG. 4 , in one embodiment, thecentral manifold 107 can be connected to one or moreadditional manifolds 405. The additional manifolds are operable to connect to multiple well locations 401-404 and deliver well treatment fluids and receive production fluids via connections 406-409, respectively, in the same way as thecentral manifold 107 described above in reference toFIGS. 2 and 3 . The additional manifolds can be located at the well pads. - In reference to
FIG. 5 , in one embodiment, the central manifold has aninput 501 that accepts pressurized stimulating fluid, fracturing fluid, or well treatment fluid from a pump truck or apumping grid 111. The fluid flows intoinput 501 and throughjunctions lines Line 504 contains avalve 506, apressure sensor 507, and anadditional valve 508. The line is connected towell head 101.Line 505 contains avalve 511, apressure sensor 512, and anadditional valve 513. These valves may be either plug valves or check valves and can be manually or electronically monitored and controlled. The pressure sensor may be a pressure transducer and may also be manually or electronically monitored or controlled.Line 504 is connected towell head 101 andline 505 is connected towell head 102. This configuration allowswells FIG. 5 , this architecture can be easily expanded to accommodate additional wells by the addition of junctions, lines, valves, and pressure sensors as illustrated. This architecture also allows monitoring the operations of the manifold and detecting leaks. By placingpressure sensors valves valves lines valves Pressure sensor 507 can detect the pressure within theactive line 504, andpressure sensor 512 can be used to detect if there is any leakage, as it would be expected that the pressure inline 505 in this configuration would be minimal. In another embodiment, only a single valve is used along each oflines FIG. 4 , the manifold of this embodiment can also work in reverse and transfer fluid from the wellhead back through the manifold and to the central location. In this configuration,input 501 can be connected to a production system or reclamation system, for example, and the valves along the line connected to the wellhead in which it is desirable to recover fluid are open. The valves along the other lines may be open or closed depending on whether it is desirable to recover fluids from the wellheads connected to those lines. Production fluid or stimulation fluid can be returned from the wellhead to those systems respectively. This manifold can be located at the central location or at a remote pad. - In reference to
FIG. 6 , in one embodiment, the central manifold contains twoinputs pumping grid 111.Inputs input 602 travels throughjunctions lines input 601 travels throughjunctions lines Lines valve 606, apressure sensor 607, and anadditional valve 608, or may contain only a single valve. These valves may be either plug valves or check valves and can be manually or electronically monitored and controlled. The pressure sensor may be a pressure transducer and may also be manually or electronically monitored or controlled. When, for example, the fluid frominput 602 is desired to be delivered to well 101 only, the valves online 610 are open and the valves online 611 are closed. When the fluid frominput 601 is desired to be delivered to well 101 only, the valves online 609 are open and the valves online 612 are closed. When it is desired that fluid from bothinputs lines lines Lines wellhead 101 throughjunction 616. When it is desired that fluid frominput 602 be delivered to bothwells lines input 601 can be delivered to well 101 and fluid frominput 602 can be delivered to well 102 simultaneously by closing the valves onlines lines FIG. 6 , the manifold can be easily expanded to include additional wells through additional junctions, lines, and valves. Furthermore, as described in reference toFIG. 4 , the manifold of this embodiment can also work in reverse and transfer fluid from the wellhead back through the manifold and to the central location. In this configuration, either or bothinputs - In reference to
FIG. 7 , in one embodiment, multiplemanifold trailers pump trucks 703 or apumping grid 111. A line from each manifold trailer can connect directly to a well head to stimulate it directly, or it can further be connected to the manifolds described that are further connected to well locations. - In one embodiment, of the
pumping grid system 111, pumping modules can be hauled to the fracturing operation factory site by truck, and pinned or bolted or otherwise located together on the ground. Pumping equipment grid modules can be added or taken away to accommodate the number of pumping units to be used on site. The pressure manifold will interface with the pumping equipment grid modules and support a crane. The grid system can be configured with various piping or electrical connections that each pumping unit may require for power, fuel, cooling, and lubrication. The grid system would incorporate space to allow access to the pumping units' main components for easy maintenance. In reference toFIG. 8 , in one embodiment of thepumping grid 111, the grid comprises one ormore pumps 801 that can be electric, gas, diesel, or natural gas powered. The grid can also contain spaces ordocks 810 operable to receive equipment, such as pumps and other devices, modularized to fit within such spaces. Thepumping grid 111 can includewalkways 807 that provide access to pumps or any other equipment docked in the grid spaces. The grid's spaces ordocks 810 can be prewired and preplumbed and can contain lube oil, fueling, power, and cooling capabilities and connections for thepumps 801 to manifold 107 (shown inFIG. 10 ). Thepumps 801 that connect to thegrid 111 can be freestanding such aspumps 801, or thepumps 809 can be attached totrucks 808.Pumps 809 can each contain its own fueling, cooling, lubrication, and power sources.Pumps 801 can rely on centralized fuel, coolant, lubrication, and power sources. The fuel for thepumps 801 can be supplied to thepumps 801 from a singlecentral fueling system 803 through piping or tubing well known in the art. Thepumps 801 can include hydraulic starting mechanisms. Hydraulic power for the starting mechanisms can be supplied to thepumps 801 from a singlecentral power system 804 using tubing or piping well known in the art. In the event electric pumps are used, thepower system 804 can provide electricity to the pumps via wires. The lubrication of thepumps 801 can also be centralized. Lubrication fluid can be supplied from acentral lubrication system 805 to thepumps 801 using tubing or piping well known in the art. Coolant for the pumps can be provided from a central source such as a coolant or water tower that can generate less noise than local fans. The grid is operable to accept connections to proppant storage and metering systems, chemical storage and metering systems, and blending units. The pumping grid can also have acrane 806 that can assist in the replacement or movement of pumps, manifolds, or other equipment. In reference toFIG. 9 , thepumping grid 111 can be enclosed in astructure 901. The structure can be a supported fabric structure, a collapsible structure, a prefabricated structure, a retractable structure, a composite structure, a temporary structure, a prefabricated wall and roof structure, a deployable structure, a modular structure, a preformed structure, a mobile accommodation structure, and combinations thereof. Thepumping grid 111 can also be partially enclosed bystructure 901 and partially exposed, as shown bypump trucks 808, which are connected to the pumping grid outside of thestructure 901. Thepumping grid 111 can also include aventilation system 902 that can release exhaust from the pumps and/or ventilate the inside of thestructure 901.FIG. 10 shows thepumping grid 111, thecrane 806, thepressure manifold 107, and the enclosingstructure 901. Acentral manifold 107 can accept connections to wells and can be connected to the pumping grid. In one embodiment, the central manifold and pumping grid are operable to simultaneously treat both a first well head connected via a first connection and a second well head connected via a second connection with the stimulation fluid manufactured by the factory and connected to the pumping grid. - In reference to
FIG. 11 , in some embodiments, the pumping grid can be located at a different pad miles away from the fracturingoperations factory 100. Anauxiliary pumping system 1102, which itself can include pumping trucks,manifold trailers 703 shown inFIG. 7 , or standalone pumps, can pump fracturing fluid from the fracturingoperations factory 100 throughconnection 1101 to thepumping grid 111. Thepumping grid 111 can next pump the fluid toproduction site 101, for example. In this way, the operations of the fracturingfactory 100 can be extended to remote pads through assembly and reassembly of thepumping grid 111 andconnection 1101. - In some embodiments, the operations of the chemical storage system, proppant storage system, blending unit, pumping grid, power unit, and manifolds are controlled, coordinated, and monitored by a central control system. The central control system can be an electronic computer system capable of receiving analog or digital signals from sensors and capable of driving digital, analog, or other variety of controls of the various components in the fracturing operations factory. The control system can be located within the factory enclosure, if any, or it can be located at a remote location. The central control system may use all of the sensor data from all units and the drive signals from their individual subcontrollers to determine subsystem trajectories. For example, control over the manufacture, pumping, gelling, blending, and resin coating of proppant by the control system can be driven by desired product properties such as density, rate, viscosity, etc. Control can also be driven by external factors affecting the subunits such as dynamic or steady-state bottlenecks. Control can be exercised substantially simultaneously with both the determination of a desired product property, or with altering external conditions. For instance, once it is determined that a well treatment fluid with a specific density is desired, a well treatment fluid of the specific density can be manufactured virtually simultaneously by entering the desired density into the control system. The control system will substantially simultaneously cause the delivery of the proppant and chemical components comprising a well treatment fluid with the desired property to the blending unit where it can be immediately pumped to the desired well location. Well treatment fluids of different compositions can also be manufactured substantially simultaneously with one another and substantially simultaneously with the determination of desired product properties through the use and control of multiple blending units each connected to the control unit, proppant storage system, chemical storage system, water source, and power unit. The central control system can include such features as: (1) virtual inertia, whereby the rates of the subsystems (chemical, proppant, power, etc.) are coupled despite differing individual responses; (2) backward capacitance control, whereby the tub level controls cascade backward through the system; (3) volumetric observer, whereby sand rate errors are decoupled and proportional ration control is allowed without steady-state error. The central control system can also be used to monitor equipment health and status. Simultaneously with the manufacture of a well treatment fluid, the control system can report the quantity and rate usage of each component comprising the fluid. For instance, the rate or total amount of proppant, chemicals, water, or electricity consumed for a given well in an operation over any time period can be immediately reported both during and after the operation. This information can be coordinated with cost schedules or billing schedules to immediately compute and report incremental or total costs of operation.
- The present invention can be used both for onshore and offshore operations using existing or specialized equipment or a combination of both. Such equipment can be modularized to expedite installation or replacement. The present invention may be enclosed in a permanent, semipermanent, or mobile structure.
- As those of ordinary skill in the art will appreciate, the present invention can be adapted for multiple uses. By way of example only, multiple well sites may be treated, produced, or treated and produced sequentially or simultaneously from a single central location. The invention is capable of considerable additional modification, alteration, and equivalents in form and function, as will occur to those ordinarily skilled in the art having the benefit of this disclosure. The depicted and described embodiments of the invention are exemplary only, and are not exhaustive of the scope of the invention. Consequently, the invention is intended to be limited only by the spirit and scope of the appended claims.
Claims (28)
1. An apparatus for providing pressure for a well fracturing operation comprising:
one or more docking areas for docking one or more pumping units to a pressure manifold wherein the one or more docking areas are operable to provide access between one or more pumping units; and
a structure operable to enclose the one or more docking areas and pumping units.
2. The apparatus of claim 1 further comprising a crane system surrounding the one or more docking areas.
3. The apparatus of claim 1 further comprising a central lubrication system connected to the one or more pumping units.
4. The apparatus of claim 1 further comprising a central power system connected to the one or more pumping units.
5. The apparatus of claim 4 wherein the central power system comprises a hydraulic power system.
6. The apparatus of claim 1 further comprising a central cooling system connected to the one or more pumping units.
7. The apparatus of claim 6 wherein the central cooling system comprises a cooling tower.
8. The apparatus of claim 1 wherein at least one of the one or more docking areas extend outside of the structure.
9. The apparatus of claim 1 further comprising a ventilation system.
10. The apparatus of claim 1 further comprising a central fueling system connected to the one or more pumping units for supplying fuel to the one or more pumping units.
11. The apparatus of claim 10 wherein the central fueling system supplies one or more fuels from the group consisting of: diesel, gasoline, and natural gas.
12. The apparatus of claim 1 wherein the structure comprises one or more structures from the group consisting of a supported fabric structure, a collapsible structure, a prefabricated structure, a retractable structure, a composite structure, a temporary structure, a prefabricated wall and roof structure, a deployable structure, a modular structure, a preformed structure, a mobile accommodation structure, and combinations thereof.
13. The apparatus of claim 1 wherein the one or more docking areas comprise walkways.
14. The apparatus of claim 1 wherein the one or more docking areas comprise one or more lubrication connections, coolant connections, fuel connections, power connections, and pressure connections.
15. The apparatus of claim 1 wherein the one or more pumping units comprise heaters.
16. An apparatus for providing pressure for a well fracturing operation comprising:
one or more pumping units connected to a manifold;
a central fueling system connected to the one or more pumping units;
a central power system connected to the one or more pumping units;
a central lubrication system connected to the one or more pumping units; and
a central cooling system connected to the one or more pumping units.
17. The apparatus of claim 16 wherein the central power system comprises a hydraulic power system.
18. The apparatus of claim 16 wherein the central cooling system comprises a cooling tower.
19. The apparatus of claim 16 further comprising a ventilation system.
20. The apparatus of claim 16 wherein the central fueling system supplies one or more fuels from the group consisting of: diesel, gasoline, natural gas, or electricity.
21. A method for operating one or more pumping units for a well fracturing operation from a land based location comprising:
providing fuel to the one or more pumping units from a central location;
providing lubrication to the one or more pumping units from a central location;
providing power to the one or more pumping units from a central location; and
providing coolant to the one or more pumping units from a central location.
22. The method of claim 21 wherein the power is provided from a hydraulic power system.
23. The method of claim 21 wherein the coolant is provided from a cooling tower.
24. The method of claim 21 further comprising providing ventilation to the one or more pumping units.
25. The method of claim 21 wherein the fuel comprises of one or more fuels from the group consisting of: diesel, gasoline, natural gas, or electricity.
26. The method of claim 21 further comprising enclosing the one or more pumping units in a structure.
27. An apparatus for providing well treatment fluid to a production site comprising:
a well treatment operations factory comprising an auxiliary pumping system; and
a pumping grid connected to the auxiliary pumping system; wherein
the pumping grid is located remotely from the well treatment operations factory.
28. A method for providing well treatment fluid to a production site comprising:
producing well treatment fluid at a central location;
pumping the well treatment fluid from the central location to a remote pumping grid; and
pumping the well treatment fluid from the remote pumping grid to the production site.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/396,918 US20070125544A1 (en) | 2005-12-01 | 2006-04-03 | Method and apparatus for providing pressure for well treatment operations |
CA002648265A CA2648265A1 (en) | 2006-04-03 | 2007-04-02 | Method and apparatus for providing pressure for well treatment operations |
RU2008143351/03A RU2008143351A (en) | 2006-04-03 | 2007-04-02 | PRESSURE METHOD AND DEVICE FOR WELL TREATMENT OPERATIONS |
PCT/GB2007/001189 WO2007113528A1 (en) | 2006-04-03 | 2007-04-02 | Method and apparatus for providing pressure for well treatment operation |
US11/873,160 US7946340B2 (en) | 2005-12-01 | 2007-10-16 | Method and apparatus for orchestration of fracture placement from a centralized well fluid treatment center |
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US11/545,749 Continuation-In-Part US7740072B2 (en) | 2005-12-01 | 2006-10-10 | Methods and systems for well stimulation using multiple angled fracturing |
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CA2648265A1 (en) | 2007-10-11 |
RU2008143351A (en) | 2010-05-10 |
WO2007113528A1 (en) | 2007-10-11 |
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