CA2945281C - Electric powered pump down - Google Patents
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- CA2945281C CA2945281C CA2945281A CA2945281A CA2945281C CA 2945281 C CA2945281 C CA 2945281C CA 2945281 A CA2945281 A CA 2945281A CA 2945281 A CA2945281 A CA 2945281A CA 2945281 C CA2945281 C CA 2945281C
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- Reciprocating Pumps (AREA)
Abstract
A method of operations in a subterranean formation, including driving a pump with an electrically powered motor to pressurize fluid, inserting a tool into a wellbore that intersects the formation, and directing the pressurized fluid into the wellbore above the tool to push the tool into the wellbore.
Description
ELECTRIC POWERED PUMP DOWN
BACKGROUND OF THE INVENTION
1. Field of Invention 100011 The present disclosure relates to operations in a subterranean formations. In particular, the present disclosure relates to a system that uses fluid pressurized by electrically powered pumps for fracturing and for pump down operations.
BACKGROUND OF THE INVENTION
1. Field of Invention 100011 The present disclosure relates to operations in a subterranean formations. In particular, the present disclosure relates to a system that uses fluid pressurized by electrically powered pumps for fracturing and for pump down operations.
2. Description of Prior Art 100021 Hydraulic fracturing is a technique used to stimulate production from some hydrocarbon producing wells. The technique usually involves injecting fluid into a wellbore at a pressure sufficient to generate fissures in the formation surrounding the wellbore.
Typically the pressurized fluid is injected into a portion of the wellbore that is pressure isolated from the remaining length of the wellbore so that fracturing is limited to a designated portion of the formation. The fracturing fluid slurry, whose primary component is usually water, includes proppant (such as sand or ceramic) that migrate into the fractures with the fracturing fluid slurry and remain to prop open the fractures after pressure is no longer applied to the wellbore. A
primary fluid for the slurry other than water, such as nitrogen, carbon dioxide, foam (nitrogen and water), diesel, or other fluids is sometimes used as the primary component instead of water.
Typically hydraulic fracturing fleets include a data van unit, blender unit, hydration unit, chemical additive unit, hydraulic fracturing pump unit, sand equipment, and other equipment.
10003J Traditionally, the fracturing fluid slurry has been pressurized on surface by high pressure pumps powered by diesel engines. To produce the pressures required for hydraulic fracturing, the pumps and associated engines have substantial volume and mass. I leavy duty trailers, skids, or trucks are required for transporting the large and heavy pumps and engines to sites where wellbores are being fractured. Each hydraulic fracturing pump is usually composed of a power end and a fluid end. The hydraulic fracturing pump also generally contains seats, valves, a spring, and keepers internally. These parts allow the hydraulic fracturing pump to draw in low pressure fluid slurry (approximately 100 psi) and discharge the same fluid slurry at high pressures (over 10,000 psi). Recently electrical motors controlled by variable frequency drives have been introduced to replace the diesel engines and transmission, which greatly reduces the noise, emissions, and vibrations generated by the equipment during operation, as well as its size footprint.
100041 On each separate unit, a closed circuit hydraulic fluid system is often used for operating auxiliary portions of each type of equipment. These auxiliary components may include dry or liquid chemical pumps, augers, cooling fans, fluid pumps, valves, actuators, greasers, mechanical lubrication, mechanical cooling, mixing paddles, landing gear, and other needed or desired components. This hydraulic fluid system is typically separate and independent of the main hydraulic fracturing fluid slurry that is being pumped into the wellbore.
SUMMARY OF THE INVENTION
100051 Certain embodiments of the present technology provide a method of operations in a subterranean formation. The method includes driving a pump with an electrically powered motor to pressurize fluid, inserting a tool into a wellbore that intersects the formation, and directing the pressurized fluid into the wellbore above the tool to push the tool into the wellbore. In some embodiments, the method can further include urging the tool into the wellbore with the pressurized fluid until the tool reaches a predetermined location in the formation. In addition, the tool can be a perforating gun.
100061 According to some embodiments, the wellbore can include a first wellbore, wherein the pressurized fluid is simultaneously directed to a second wellbore that also intersects the subterranean formation. Hydraulic fracturing can be performed in the second wellbore.
Furthermore, the pump can include a first pump and a second pump, wherein fluid pressurized by the first pump is directed into the first wellbore to push the tool into the first wellbore, and fluid pressurized by the second pump is directed into the second wellbore to use in hydraulic fracturing.
100071 Additional embodiments can include pressurizing fluid with an electric blender to form a boost fluid, directing the boost fluid to the pump. In addition, the electricity that powers the motor can be generated with a generator that is proximate the electric motor, and a wireline system can be powered by the electricity.
100081 Alternate embodiments of the present technology can include a method of operations in a subterranean formation, including generating electricity, energizing electric motors with the electricity, driving a fracturing pump with at least one of the electric motors, and driving a pump down pump with at least one of the electric motors. In certain embodiments, the electricity can be generated by a turbine generator, and the method can include powering a sand conveyer and hydration unit with the electricity.
100091 In some embodiments, the method can further include using a first fluid pressurized by the fracturing pump to fracture the formation, and using a second fluid that is pressurized by the pump down pump in a pump down operation. In addition, the first fluid can be directed to a first
Typically the pressurized fluid is injected into a portion of the wellbore that is pressure isolated from the remaining length of the wellbore so that fracturing is limited to a designated portion of the formation. The fracturing fluid slurry, whose primary component is usually water, includes proppant (such as sand or ceramic) that migrate into the fractures with the fracturing fluid slurry and remain to prop open the fractures after pressure is no longer applied to the wellbore. A
primary fluid for the slurry other than water, such as nitrogen, carbon dioxide, foam (nitrogen and water), diesel, or other fluids is sometimes used as the primary component instead of water.
Typically hydraulic fracturing fleets include a data van unit, blender unit, hydration unit, chemical additive unit, hydraulic fracturing pump unit, sand equipment, and other equipment.
10003J Traditionally, the fracturing fluid slurry has been pressurized on surface by high pressure pumps powered by diesel engines. To produce the pressures required for hydraulic fracturing, the pumps and associated engines have substantial volume and mass. I leavy duty trailers, skids, or trucks are required for transporting the large and heavy pumps and engines to sites where wellbores are being fractured. Each hydraulic fracturing pump is usually composed of a power end and a fluid end. The hydraulic fracturing pump also generally contains seats, valves, a spring, and keepers internally. These parts allow the hydraulic fracturing pump to draw in low pressure fluid slurry (approximately 100 psi) and discharge the same fluid slurry at high pressures (over 10,000 psi). Recently electrical motors controlled by variable frequency drives have been introduced to replace the diesel engines and transmission, which greatly reduces the noise, emissions, and vibrations generated by the equipment during operation, as well as its size footprint.
100041 On each separate unit, a closed circuit hydraulic fluid system is often used for operating auxiliary portions of each type of equipment. These auxiliary components may include dry or liquid chemical pumps, augers, cooling fans, fluid pumps, valves, actuators, greasers, mechanical lubrication, mechanical cooling, mixing paddles, landing gear, and other needed or desired components. This hydraulic fluid system is typically separate and independent of the main hydraulic fracturing fluid slurry that is being pumped into the wellbore.
SUMMARY OF THE INVENTION
100051 Certain embodiments of the present technology provide a method of operations in a subterranean formation. The method includes driving a pump with an electrically powered motor to pressurize fluid, inserting a tool into a wellbore that intersects the formation, and directing the pressurized fluid into the wellbore above the tool to push the tool into the wellbore. In some embodiments, the method can further include urging the tool into the wellbore with the pressurized fluid until the tool reaches a predetermined location in the formation. In addition, the tool can be a perforating gun.
100061 According to some embodiments, the wellbore can include a first wellbore, wherein the pressurized fluid is simultaneously directed to a second wellbore that also intersects the subterranean formation. Hydraulic fracturing can be performed in the second wellbore.
Furthermore, the pump can include a first pump and a second pump, wherein fluid pressurized by the first pump is directed into the first wellbore to push the tool into the first wellbore, and fluid pressurized by the second pump is directed into the second wellbore to use in hydraulic fracturing.
100071 Additional embodiments can include pressurizing fluid with an electric blender to form a boost fluid, directing the boost fluid to the pump. In addition, the electricity that powers the motor can be generated with a generator that is proximate the electric motor, and a wireline system can be powered by the electricity.
100081 Alternate embodiments of the present technology can include a method of operations in a subterranean formation, including generating electricity, energizing electric motors with the electricity, driving a fracturing pump with at least one of the electric motors, and driving a pump down pump with at least one of the electric motors. In certain embodiments, the electricity can be generated by a turbine generator, and the method can include powering a sand conveyer and hydration unit with the electricity.
100091 In some embodiments, the method can further include using a first fluid pressurized by the fracturing pump to fracture the formation, and using a second fluid that is pressurized by the pump down pump in a pump down operation. In addition, the first fluid can be directed to a first
3 wellbore that intersects the formation, and the second fluid can be directed to a second wellbore that intersects the formation.
[0010] Yet another embodiment of the present technology includes system for use in a subterranean formation operation. The system includes a pump down pump in communication with a first wellbore that intersects the formation, and that pressurizes fluid in the first wellbore, an electric motor that drives the pump down pump, and a tool positioned in the wellbore below at least a portion of the fluid pressurized by the pump down pump, and that is pushed toward the bottom of the wellbore by the fluid. Certain embodiments of the system can also include a hydraulic fracturing pump in communication with a second wellbore that intersects the formation, and that pressurizes fluid in the second wellbore, and the electric motor that drives the hydraulic fracturing pump.
100111 According to some embodiments, the electric motor can be a first electric motor and a second electric motor, the first electric motor driving the pump down pump, and the second electric motor driving the hydraulic fracturing pump. In addition, the system can further include gas powered turbine generators, and a wireline system that is in electrical communication with the turbine generators.
BRIEF DESCRIPTION OF DRAWINGS
100121 Some of the features and benefits of the present invention having been stated, others will become apparent as the description proceeds when taken in conjunction with the accompanying drawings, in which:
100131 FIGS. IA and 113 are schematic examples of a system for use in fracturing and pump down operations.
[0010] Yet another embodiment of the present technology includes system for use in a subterranean formation operation. The system includes a pump down pump in communication with a first wellbore that intersects the formation, and that pressurizes fluid in the first wellbore, an electric motor that drives the pump down pump, and a tool positioned in the wellbore below at least a portion of the fluid pressurized by the pump down pump, and that is pushed toward the bottom of the wellbore by the fluid. Certain embodiments of the system can also include a hydraulic fracturing pump in communication with a second wellbore that intersects the formation, and that pressurizes fluid in the second wellbore, and the electric motor that drives the hydraulic fracturing pump.
100111 According to some embodiments, the electric motor can be a first electric motor and a second electric motor, the first electric motor driving the pump down pump, and the second electric motor driving the hydraulic fracturing pump. In addition, the system can further include gas powered turbine generators, and a wireline system that is in electrical communication with the turbine generators.
BRIEF DESCRIPTION OF DRAWINGS
100121 Some of the features and benefits of the present invention having been stated, others will become apparent as the description proceeds when taken in conjunction with the accompanying drawings, in which:
100131 FIGS. IA and 113 are schematic examples of a system for use in fracturing and pump down operations.
4 [0014] FIG. 2 is a plan schematic view of an alternate example of the system of FIG. I.
100151 FIG. 3 is a plan schematic view of an example of an electrically powered pump down system.
100161 FIG. 4 is a perspective view of an example of a pump system for use with the hydraulic fracturing system of FIGS. IA and 113.
100171 FIG. 5 is a perspective view of an example of a blender unit for use with the system of FIGS. lA and 113.
100181 FIGS. 6 and 7 are plan schematic views of alternate examples of an electrically powered pump down system.
[00191 FIG. 8 is a perspective view of an example of an auxiliary unit for use with the system of FIGS. IA, 1B, and 5.
100201 While the invention will be described in connection with the preferred embodiments, it will be understood that it is not intended to limit the invention to that embodiment. On the contrary, it is intended to cover all alternatives, modifications, and equivalents, as may be included within the spirit and scope of the invention as defined by the appended claims.
DETAILED DESCRIPTION OF INVENTION
10021] The method and system of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings in which embodiments are shown. The method and system of the present disclosure may be in many different forms and should not be construed as limited to the illustrated embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey its scope to those skilled in the art. Like numbers refer to like elements throughout. In an embodiment, usage of the term "about" includes +1- 5% of the cited magnitude.
In an embodiment, usage of the term "substantially" includes 41- 5% of the cited magnitude.
[00221 It is to be further understood that the scope of the present disclosure is not limited to the exact details of construction, operation, exact materials, or embodiments shown and described, as modifications and equivalents will be apparent to one skilled in the art. In the drawings and specification, there have been disclosed illustrative embodiments and, although specific terms are employed, they are used in a generic and descriptive sense only and not for the purpose of limitation.
100231 Figure IA is a schematic example of a system 10 that is used for providing pressurized fluid to wellbores 121, 122 shown intersecting a subterranean formation 16. As will be described in more detail below, the pressurized fluid can be used in fracturing and/or pump down operations in the wellborcs 121, 127. Included with the system 10 is a hydration unit 18 that receives fluid from a fluid source 20 via line 22, and also selectively receives additives from an additive source 24 via line 26. Additive source 24 can be separate from the hydration unit 18 as a stand-alone unit, or can be included as part of the same unit as the hydration unit 18. The fluid, which in one example is water, is mixed inside of the hydration unit 18 with the additives. In an embodiment, the fluid and additives are mixed over a period of time to allow for uniform distribution of the additives within the fluid. In the example of Figure 1A, the fluid and additive mixture is transferred to a blender unit 28 via line 30. A proppant source 32 contains proppant, which is delivered to the blender unit 28 as represented by line 34, where line 34 can be a conveyer. Inside the blender unit 28, the proppant and fluid/additive mixture are combined to form a slurry, which is then transferred to a pump assembly 36 via line 38;
thus fluid in line 38 includes the discharge of blender unit 28, which is the suction (or boost) for the pump assembly 36. 13Iender unit 28 can have an onboard chemical additive system, such as with chemical pumps and augers. Optionally, additive source 24 can provide chemicals to blender unit 28; or a separate and standalone chemical additive system (not shown) can be provided for delivering chemicals to the blender unit 28. In an example, the pressure of the slurry in line 38 ranges from around 80 psi to around 100 psi. The pressure of the slurry can be increased up to around 15,000 psi by pump assembly 36. A motor 39, which connects to pump assembly 36 via connection 40, drives pump assembly 36 so that it can pressurize the slurry.
100241 After being discharged from pump assembly 36, slurry is injected into a wellhead assembly 411, 412; discharge piping 421, 427 connects discharge of pump assembly 36 with wellhead assembly 411, 412 and provides a conduit for the slurry between the pump assembly 36 and the wellhead assembly 41, 412. In an alternative, hoses or other connections can be used to provide a conduit for the slurry between the pump assembly 36 and the wellhead assembly 411, 412. Optionally, any type of fluid can be pressurized by the pump assembly 36 to form injection fluid that is then pumped into the wellbores 121, 122, and is not limited to fluids having chemicals or proppant. As detailed below, fluid from pump assembly 36 can be used for fracturing the formation 16, for pump down operations in wellbores 121, 127.
Examples exist wherein the system 10 includes multiple pump assemblies 36, and multiple motors 39 for driving the multiple fracturing pump assemblies 36. Valves 431, 432, are shown provided respectively on lines 421, 422 for selectively allowing flow into the wellhead assemblies 411, 417.
100251 An example of a turbine 44 is provided in the example of Figure IA and which receives a combustible fuel from a fuel source 46 via a feed line 48. In one example, the combustible fuel is natural gas, and the fuel source 46 can be a container of natural gas, a pipeline, or a well (not shown) proximate the turbine 44. Combustion of the fuel in the turbine 44 in turn powers a generator 50 that produces electricity. Shall 52 connects generator 50 to turbine 44. The combination of the turbine 44, generator 50, and shall 52 define a turbine generator 53. In another example, gearing can also be used to connect the turbine 44 and generator 50.
100261 An example of a micro-grid 54 is further illustrated in Figure 1A, which distributes electricity generated by the turbine generator 53. Included with the micro-grid 54 is a transformer 56 for stepping down voltage of the electricity generated by the generator 50 to a voltage more compatible for use by electrical powered devices in the system 10. In another example, the power generated by the turbine generator and the power utilized by the electrical powered devices in the system 10 are of the same voltage, such as 4160 V so that main power transformers are not needed. In one embodiment, multiple 3500 kVA dry cast coil transformers are utilized. Electricity generated in generator 50 is conveyed to transformer 56 via line 58. In one example, transformer 56 steps the voltage down from 13.8 kV to around 600 V. Other stepped down voltages can include 4,160 V. 480 V. or other voltages. The Output or low voltage side of the transformer 56 connects to a power bus 60, lines 62, 64, 66, 68, 70, and 71 connect to power bus 60 and deliver electricity to electrically powered end users in the system 10. More specifically, line 62 connects fluid source 20 to bus 60, line 64 connects additive source 24 to bus 60, line 66 connects hydration unit 18 to bus 60, line 68 connects proppant source 32 to bus 60, line 70 connects blender unit 28 to bus 60, and line 71 connects bus 60 to a variable frequency drive ("Mr) 72. line 73 connects VII) 72 to motor 39. In one example, VH) 72 selectively provides electrical power to motor 39 via line 73, and can be used to control operation of motor 39, and thus also operation of pump 36. -100271 In an example, additive source 24 contains ten or more chemical pumps for supplementing the existing chemical pumps on the hydration unit 18 and blender unit 28.
Chemicals from the additive source 24 can be delivered via lines 26 to either the hydration unit 18 and/or the blender unit 28. In one embodiment, the elements of the system 10 are mobile and can be readily transported to a wellsite adjacent the wellbore 12, such as on trailers or other platforms equipped with wheels or tracks.
100281 Still referring to Figure 1A, a pump down operation is shown being performed in wellbore 121 and wherein a perforating string 801 is being pumped down within wellbore 121 by pressurized fluid from the pump system 36. Thus in this example, fluid being discharged from pump system 36 is handled within discharge piping 421 and into wellhead assembly 411 where it is used to urge the perforating string 801 deeper into wellbore 121. The example of the perforating string 801 includes perforating guns 821 stacked in series and coaxial with one another. Each of the perforating guns 821 include a number of shaped charges 841 that when detonated create perforations (not shown) within formation 16. In addition, the perforating guns typically may include plugs, to isolate the guns from certain portions of the well, such as portions down hole from the guns. As will be described below, the perforations provide a starting point for fractures to be formed within formation 16 by introduction of high pressure fluid within wellbore 121. Each of wellbores 121, 127 are shown having vertical, deviated and horizontal sections; however, wellbores 121, 122 can each be substantially vertical, or one can be vertical and the other have deviated and horizontal portions. Further illustrated in Figure IA is a wireline 861 which depends downward from the wellhead assembly 411 and to perforating string 801.
Wireline 861 can be used to deploy and retrieve perforating string 801 from within wellbore 121.
Moreover, signals for initiating detonation of the shaped charges 841 can come via wireline 861 and from surface.
100291 Figure 1B illustrates an example where pressurized fluid from pump system 36 has been introduced into wellbore 121 and so that perforations 90 are formed in formation 16 and that project radially outward from wellbore 121. As indicated above, the perforations 90 created by shaped charges 841 (Figure 1A) provide initiation points within formation 16 from which fluid can propagate into formation 16 to form fractures.
100301 An advantage of the system 10 is that in situations when wellbores 121, 122 are proximate one another, the pump system 36 can provide pressurized fluid to each of these wellbores 121, 122, and for different purposes. As illustrated in Figure 113, the step of hydraulic fracturing is taking place in wellbore 121, -while substantially simultaneously a pump down operation is occurring in wellbore 122. More specifically, a perforating string 802, similar in construction to the perforating string 801 of Figure 1A, is being deployed within wellbore 122. Also, perforating string 802 includes coaxially coupled perforating guns 822 and which each include a number of shaped charges 847 for creating perforations (not shown) within formation 16.
Deployment, retrieval, and signal communication between surface and perforating string 807 can be accomplished via wireline 867 shown inserted within wellbore 127.
[0031] In one example of operation, the system 10 can be used to selectively provide the pressurized fluid to the adjacent wellbores 121, 122 so that what is referred to in the industry as a zipper operation can take place. A zipper operation is where adjacent wellbores are perforated and fractured along an alternating sequence. Moreover, the zipper operation is done sequentially so that the different operations can be performed on different wells on the same well site, which speeds up completion activities. As illustrated in the figures described below, separate pumping systems can provide the fluid for the fracturing and the pump down operations.
100321 Shown in Figure 2 is a schematic plan view of one example of system 10A
where turbine generators 53A1,7 and 53A3,4 respectively generate electricity that is delivered to switch gear 92A1 and 92A7, that in turn deliver the output electricity to transformers 56A1_,, and auxiliary units 94A1,2. Auxiliary unit 94A1 transmits electricity to sand equipment 32A, hydration unit 18A, frac blender 28A, and a frac data van 95A. In one example, frac data van 95A is an enclosed vehicle that provides controls and monitoring equipment for use in controlling and monitoring the fracturing system. Electricity from transformers 56A1_, which is received from switch gear 92A1,2 is delivered at a designated voltage to fracturing pumps 36A1õ wherein fracturing pumps 36A1_,õ are dedicated to pressurizing fluid for use in fracturing operations. Also from transformers 56A1_11 electricity is transmitted to pump down units 96A1_,, that are used for pressurizing fluid used in pump down operations as described above. It should be pointed out, that the pump down operations are not limited to disposing perforating strings within wellbores, but can include any other type of equipment that is to be positioned at a designated depth within a wellbore.
[00331 Further illustrated in Figure 2 is that auxiliary 94A2 has an output that delivers electricity to a blender 98A for use in pump down and a data van 100A that is also used for pump down.
The separate data van 100A and blender 98A can be used, for example, during zipper fracturing operations, but are not required for stack fracturing operations. This is because during stack fracturing operations, only one operation is occurring at a time, so the frac datavan 95A and frac blender 28A can be used for all operations. Further illustrated in Fig. 2 is that the power from auxiliary 94A2 transmits to an optional transformer 102A, which can be used to step down electricity for use by a crane 104A and wireline system 106A if the crane 104A
and wireline system 106A require a lower voltage than the fracturing equipment. Examples exist where crane 104A and wireline system 106A provide the hoisting and signal capabilities for the wireline 861,2 of Figures IA and 1B. Moreover, wireline system 106A can include a wireline truck having a spool of wireline as well as controllers and initiation hardware for sending communication and initiation signals down the wireline 861,7.
[0034] Figure 3 shows, in a schematic plan view, one example of a pump down system 10813 that pressurizes fluid for use in a pump down operation. In this example, a turbine set 5313 is used for generating electricity, and that like the other turbine sets described herein is powered by combustion of natural gas that then drives a generator to produce electricity.
The electricity is delivered to switch gear 9213 and which has an output shown in communication with transformers 56131_N and auxiliary 94B. One of transformers 56131_N delivers electricity to other equipment 11013 which can include, for example, glycol heaters, light plants, a company man trailer, water transfer pumps, a crane, wellsite toold, etc. Others of the transformers 56B1_,, have outputs at designated voltages (e.g.,600V, 480V, or step up transformers) that communicate with pump down pumps 96B11 that are schematically illustrated provided on trailers and within the pump down system 10813. Further included with the pump down system 10813 is a blender 9813 for blending the fluid that is then to be pressurized by the pump down pumps, and a data van 10013 which provides a location for personnel to control and monitor equipment within the pump down system 10813. In this example, electricity is generated specifically for the pump down pumps and is not diverted from that being used to drive pumps used for fracturing. Additionally, the fluid being pressurized is from the pump down pumps and not from a fracturing pump.
100351 Provided in a perspective view in Figure 4 is one example of a pump system 36C, which can be used either for pump down operations or for fracturing operations. In the illustrated example, pumps 112C1,2 are shown mounted on a trailer 114C so that the pumps 112C 1 ,2 can be readily transported to different locations for onsite operation. Additionally, a VFD housing 116C is also mounted on trailer 114C and in which equipment such as VFDs for pumps, isolation breakers, and a motor control center can be situated during operation of pumps 112C12. 'the motor control cabinet can be a breaker cabinet that contains breakers for smaller motors such as blower motors, lube motors, and fan motors.
100361 Shown in Figure 5 is an example of a blender unit 281) shown in a perspective view.
here, blender unit 281) is shown including a hopper 1181) and auger assembly 1191), and wherein the hopper 118D receives sand or other proppant from a sand source, such as a conveyor (shown in Figure 1). Auger assembly 1191), which is an elongated section having barrel and auger screws rotatably disposed within, urge the sand upward. 1-lopper 1181) and auger assembly 119D are mounted on a trailer 1201) and adjacent a mixing tub 1221), which is typically an open top tub where sand, water, and chemicals are mixed together to form a slurry that is then provided to pumps where the fluid is pressurized. The slurry that flows to pumps is directed through a manifold 1241) that mounts on a lower end of trailer 1201). Also included with the blender unit 281) is a control room 1261) which communicates with the datavan, houses operations personnel, and provides monitoring and controls devices for operating and monitoring of the blender unit 281).
100371 An alternate embodiment of a pump down system 108E is shown in a plan schematic view in Figure 6, where turbine set 53E with a gas powered turbine generator generates electricity that is then delivered to a switch gear 92E. Output from switch gear 92E is delivered to transformers 56E1,2 that in turn provide electrical power to pump down pumps 96E1_2 shown mounted on trailers. Electricity from switch gear 92E is also directed to an auxiliary unit 94E
that supplies electricity to both a blender 98E and data van 100E. Included within blender 98E is a pump (not shown) that in some embodiments pressurizes fluid to a boost pressure that is then delivered to the pump down pumps 96E1_2. In an example, the blender 98E
pressurizes the fluid in a range from about 70 psi to about 120 psi. Further, within electric blender 98E chemical additives can be added to the fluid that is then delivered to the pump down pumps. Other examples exist, wherein blender for use with a pump down system is a blender that is part of the fracturing system.
100381 Another alternate example of the pump down system 108F is illustrated in plan schematic view in Figure 7 and where turbine set 53F, which uses gas-powered turbines to generate electricity, delivers electricity to switch gear 92F. In this example, a transformer 56F receives electricity from switch gear 921 and delivers it to other equipment 1101. Also fed by switch gear 92F is auxiliary 94F, which in turn provides electrical power to pump down unit 96F that is independent of electrical power for the hydraulic fracturing pumps. In the embodiment of Fig. 7, the pump down unit 96F can include a small boost pump (capable of, for example, up to about 20 barrels per minute (bpm) at 100 psi instead of about 130bpm for a blender), and a water pump (capable of about 20bpm at 10,000psi) to replace the hydraulic fracturing pumps. Thus, the pump down system 1081' of Fig. 7 is capable of operating separately from the rest of the fracking system, or from the hydraulic fracturing pumps. This flexibility allows use of the electric powered pump down system with any type of hydraulic fracturing system, whether such system is powered by electricity, diesel, or otherwise. This is also true of the embodiments shown in Figs. 3 and 6.
[0039] Figure 8 shows in a side perspective view an example of an auxiliary unit 940 and which includes a trailer 1280 and on which a transformer 1300 and a VFD house 1320 are mounted.
The \ND house 1320 and transformer 1300 can be used to power and control the desired equipment, such as, for example, the blender, the hydration unit, the conveyor, and/or the datavan. The VFD house 1320 can also contain soft starters for, large non speed controlled motors, smaller blower motors and radiator fans for cooling. Power can be provided from turbines, to a switchgear, then to the auxiliary unit 940. The transformer 1300 can be used, for example, to convert power from 13.8kV to 600V to provide power to the VII) house. The blender did not have room to contain its own VFD therefore the Auxiliary Trailer was created to serve this purpose. Each hydraulic fracturing site can benefit from the use of a single auxiliary unit 940 or multiple auxiliary units 940 depending on the individual needs and circumstances at the site.
[0040] Use of auxiliary units 940 is advantageous because each separate auxiliary unit 940 provides a separate power grid, thereby creating multiple power centers, which in turn allows for greater flexibility in the positioning of equipment at a site, and creates redundancy in the operations. The use of auxiliary units 940 also helps with power cable management, providing multiple different cable routing for the equipment.
[0041] The present invention described herein, therefore, is well adapted to carry out the objects and attain the ends and advantages mentioned, as well as others inherent therein. While a presently preferred embodiment of the invention has been given for purposes of disclosure, numerous changes exist in the details of procedures for accomplishing the desired results. These and other similar modifications will readily suggest themselves to those skilled in the art, and are intended to be encompassed within the spirit of the present invention disclosed herein and the scope of the appended claims.
100151 FIG. 3 is a plan schematic view of an example of an electrically powered pump down system.
100161 FIG. 4 is a perspective view of an example of a pump system for use with the hydraulic fracturing system of FIGS. IA and 113.
100171 FIG. 5 is a perspective view of an example of a blender unit for use with the system of FIGS. lA and 113.
100181 FIGS. 6 and 7 are plan schematic views of alternate examples of an electrically powered pump down system.
[00191 FIG. 8 is a perspective view of an example of an auxiliary unit for use with the system of FIGS. IA, 1B, and 5.
100201 While the invention will be described in connection with the preferred embodiments, it will be understood that it is not intended to limit the invention to that embodiment. On the contrary, it is intended to cover all alternatives, modifications, and equivalents, as may be included within the spirit and scope of the invention as defined by the appended claims.
DETAILED DESCRIPTION OF INVENTION
10021] The method and system of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings in which embodiments are shown. The method and system of the present disclosure may be in many different forms and should not be construed as limited to the illustrated embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey its scope to those skilled in the art. Like numbers refer to like elements throughout. In an embodiment, usage of the term "about" includes +1- 5% of the cited magnitude.
In an embodiment, usage of the term "substantially" includes 41- 5% of the cited magnitude.
[00221 It is to be further understood that the scope of the present disclosure is not limited to the exact details of construction, operation, exact materials, or embodiments shown and described, as modifications and equivalents will be apparent to one skilled in the art. In the drawings and specification, there have been disclosed illustrative embodiments and, although specific terms are employed, they are used in a generic and descriptive sense only and not for the purpose of limitation.
100231 Figure IA is a schematic example of a system 10 that is used for providing pressurized fluid to wellbores 121, 122 shown intersecting a subterranean formation 16. As will be described in more detail below, the pressurized fluid can be used in fracturing and/or pump down operations in the wellborcs 121, 127. Included with the system 10 is a hydration unit 18 that receives fluid from a fluid source 20 via line 22, and also selectively receives additives from an additive source 24 via line 26. Additive source 24 can be separate from the hydration unit 18 as a stand-alone unit, or can be included as part of the same unit as the hydration unit 18. The fluid, which in one example is water, is mixed inside of the hydration unit 18 with the additives. In an embodiment, the fluid and additives are mixed over a period of time to allow for uniform distribution of the additives within the fluid. In the example of Figure 1A, the fluid and additive mixture is transferred to a blender unit 28 via line 30. A proppant source 32 contains proppant, which is delivered to the blender unit 28 as represented by line 34, where line 34 can be a conveyer. Inside the blender unit 28, the proppant and fluid/additive mixture are combined to form a slurry, which is then transferred to a pump assembly 36 via line 38;
thus fluid in line 38 includes the discharge of blender unit 28, which is the suction (or boost) for the pump assembly 36. 13Iender unit 28 can have an onboard chemical additive system, such as with chemical pumps and augers. Optionally, additive source 24 can provide chemicals to blender unit 28; or a separate and standalone chemical additive system (not shown) can be provided for delivering chemicals to the blender unit 28. In an example, the pressure of the slurry in line 38 ranges from around 80 psi to around 100 psi. The pressure of the slurry can be increased up to around 15,000 psi by pump assembly 36. A motor 39, which connects to pump assembly 36 via connection 40, drives pump assembly 36 so that it can pressurize the slurry.
100241 After being discharged from pump assembly 36, slurry is injected into a wellhead assembly 411, 412; discharge piping 421, 427 connects discharge of pump assembly 36 with wellhead assembly 411, 412 and provides a conduit for the slurry between the pump assembly 36 and the wellhead assembly 41, 412. In an alternative, hoses or other connections can be used to provide a conduit for the slurry between the pump assembly 36 and the wellhead assembly 411, 412. Optionally, any type of fluid can be pressurized by the pump assembly 36 to form injection fluid that is then pumped into the wellbores 121, 122, and is not limited to fluids having chemicals or proppant. As detailed below, fluid from pump assembly 36 can be used for fracturing the formation 16, for pump down operations in wellbores 121, 127.
Examples exist wherein the system 10 includes multiple pump assemblies 36, and multiple motors 39 for driving the multiple fracturing pump assemblies 36. Valves 431, 432, are shown provided respectively on lines 421, 422 for selectively allowing flow into the wellhead assemblies 411, 417.
100251 An example of a turbine 44 is provided in the example of Figure IA and which receives a combustible fuel from a fuel source 46 via a feed line 48. In one example, the combustible fuel is natural gas, and the fuel source 46 can be a container of natural gas, a pipeline, or a well (not shown) proximate the turbine 44. Combustion of the fuel in the turbine 44 in turn powers a generator 50 that produces electricity. Shall 52 connects generator 50 to turbine 44. The combination of the turbine 44, generator 50, and shall 52 define a turbine generator 53. In another example, gearing can also be used to connect the turbine 44 and generator 50.
100261 An example of a micro-grid 54 is further illustrated in Figure 1A, which distributes electricity generated by the turbine generator 53. Included with the micro-grid 54 is a transformer 56 for stepping down voltage of the electricity generated by the generator 50 to a voltage more compatible for use by electrical powered devices in the system 10. In another example, the power generated by the turbine generator and the power utilized by the electrical powered devices in the system 10 are of the same voltage, such as 4160 V so that main power transformers are not needed. In one embodiment, multiple 3500 kVA dry cast coil transformers are utilized. Electricity generated in generator 50 is conveyed to transformer 56 via line 58. In one example, transformer 56 steps the voltage down from 13.8 kV to around 600 V. Other stepped down voltages can include 4,160 V. 480 V. or other voltages. The Output or low voltage side of the transformer 56 connects to a power bus 60, lines 62, 64, 66, 68, 70, and 71 connect to power bus 60 and deliver electricity to electrically powered end users in the system 10. More specifically, line 62 connects fluid source 20 to bus 60, line 64 connects additive source 24 to bus 60, line 66 connects hydration unit 18 to bus 60, line 68 connects proppant source 32 to bus 60, line 70 connects blender unit 28 to bus 60, and line 71 connects bus 60 to a variable frequency drive ("Mr) 72. line 73 connects VII) 72 to motor 39. In one example, VH) 72 selectively provides electrical power to motor 39 via line 73, and can be used to control operation of motor 39, and thus also operation of pump 36. -100271 In an example, additive source 24 contains ten or more chemical pumps for supplementing the existing chemical pumps on the hydration unit 18 and blender unit 28.
Chemicals from the additive source 24 can be delivered via lines 26 to either the hydration unit 18 and/or the blender unit 28. In one embodiment, the elements of the system 10 are mobile and can be readily transported to a wellsite adjacent the wellbore 12, such as on trailers or other platforms equipped with wheels or tracks.
100281 Still referring to Figure 1A, a pump down operation is shown being performed in wellbore 121 and wherein a perforating string 801 is being pumped down within wellbore 121 by pressurized fluid from the pump system 36. Thus in this example, fluid being discharged from pump system 36 is handled within discharge piping 421 and into wellhead assembly 411 where it is used to urge the perforating string 801 deeper into wellbore 121. The example of the perforating string 801 includes perforating guns 821 stacked in series and coaxial with one another. Each of the perforating guns 821 include a number of shaped charges 841 that when detonated create perforations (not shown) within formation 16. In addition, the perforating guns typically may include plugs, to isolate the guns from certain portions of the well, such as portions down hole from the guns. As will be described below, the perforations provide a starting point for fractures to be formed within formation 16 by introduction of high pressure fluid within wellbore 121. Each of wellbores 121, 127 are shown having vertical, deviated and horizontal sections; however, wellbores 121, 122 can each be substantially vertical, or one can be vertical and the other have deviated and horizontal portions. Further illustrated in Figure IA is a wireline 861 which depends downward from the wellhead assembly 411 and to perforating string 801.
Wireline 861 can be used to deploy and retrieve perforating string 801 from within wellbore 121.
Moreover, signals for initiating detonation of the shaped charges 841 can come via wireline 861 and from surface.
100291 Figure 1B illustrates an example where pressurized fluid from pump system 36 has been introduced into wellbore 121 and so that perforations 90 are formed in formation 16 and that project radially outward from wellbore 121. As indicated above, the perforations 90 created by shaped charges 841 (Figure 1A) provide initiation points within formation 16 from which fluid can propagate into formation 16 to form fractures.
100301 An advantage of the system 10 is that in situations when wellbores 121, 122 are proximate one another, the pump system 36 can provide pressurized fluid to each of these wellbores 121, 122, and for different purposes. As illustrated in Figure 113, the step of hydraulic fracturing is taking place in wellbore 121, -while substantially simultaneously a pump down operation is occurring in wellbore 122. More specifically, a perforating string 802, similar in construction to the perforating string 801 of Figure 1A, is being deployed within wellbore 122. Also, perforating string 802 includes coaxially coupled perforating guns 822 and which each include a number of shaped charges 847 for creating perforations (not shown) within formation 16.
Deployment, retrieval, and signal communication between surface and perforating string 807 can be accomplished via wireline 867 shown inserted within wellbore 127.
[0031] In one example of operation, the system 10 can be used to selectively provide the pressurized fluid to the adjacent wellbores 121, 122 so that what is referred to in the industry as a zipper operation can take place. A zipper operation is where adjacent wellbores are perforated and fractured along an alternating sequence. Moreover, the zipper operation is done sequentially so that the different operations can be performed on different wells on the same well site, which speeds up completion activities. As illustrated in the figures described below, separate pumping systems can provide the fluid for the fracturing and the pump down operations.
100321 Shown in Figure 2 is a schematic plan view of one example of system 10A
where turbine generators 53A1,7 and 53A3,4 respectively generate electricity that is delivered to switch gear 92A1 and 92A7, that in turn deliver the output electricity to transformers 56A1_,, and auxiliary units 94A1,2. Auxiliary unit 94A1 transmits electricity to sand equipment 32A, hydration unit 18A, frac blender 28A, and a frac data van 95A. In one example, frac data van 95A is an enclosed vehicle that provides controls and monitoring equipment for use in controlling and monitoring the fracturing system. Electricity from transformers 56A1_, which is received from switch gear 92A1,2 is delivered at a designated voltage to fracturing pumps 36A1õ wherein fracturing pumps 36A1_,õ are dedicated to pressurizing fluid for use in fracturing operations. Also from transformers 56A1_11 electricity is transmitted to pump down units 96A1_,, that are used for pressurizing fluid used in pump down operations as described above. It should be pointed out, that the pump down operations are not limited to disposing perforating strings within wellbores, but can include any other type of equipment that is to be positioned at a designated depth within a wellbore.
[00331 Further illustrated in Figure 2 is that auxiliary 94A2 has an output that delivers electricity to a blender 98A for use in pump down and a data van 100A that is also used for pump down.
The separate data van 100A and blender 98A can be used, for example, during zipper fracturing operations, but are not required for stack fracturing operations. This is because during stack fracturing operations, only one operation is occurring at a time, so the frac datavan 95A and frac blender 28A can be used for all operations. Further illustrated in Fig. 2 is that the power from auxiliary 94A2 transmits to an optional transformer 102A, which can be used to step down electricity for use by a crane 104A and wireline system 106A if the crane 104A
and wireline system 106A require a lower voltage than the fracturing equipment. Examples exist where crane 104A and wireline system 106A provide the hoisting and signal capabilities for the wireline 861,2 of Figures IA and 1B. Moreover, wireline system 106A can include a wireline truck having a spool of wireline as well as controllers and initiation hardware for sending communication and initiation signals down the wireline 861,7.
[0034] Figure 3 shows, in a schematic plan view, one example of a pump down system 10813 that pressurizes fluid for use in a pump down operation. In this example, a turbine set 5313 is used for generating electricity, and that like the other turbine sets described herein is powered by combustion of natural gas that then drives a generator to produce electricity.
The electricity is delivered to switch gear 9213 and which has an output shown in communication with transformers 56131_N and auxiliary 94B. One of transformers 56131_N delivers electricity to other equipment 11013 which can include, for example, glycol heaters, light plants, a company man trailer, water transfer pumps, a crane, wellsite toold, etc. Others of the transformers 56B1_,, have outputs at designated voltages (e.g.,600V, 480V, or step up transformers) that communicate with pump down pumps 96B11 that are schematically illustrated provided on trailers and within the pump down system 10813. Further included with the pump down system 10813 is a blender 9813 for blending the fluid that is then to be pressurized by the pump down pumps, and a data van 10013 which provides a location for personnel to control and monitor equipment within the pump down system 10813. In this example, electricity is generated specifically for the pump down pumps and is not diverted from that being used to drive pumps used for fracturing. Additionally, the fluid being pressurized is from the pump down pumps and not from a fracturing pump.
100351 Provided in a perspective view in Figure 4 is one example of a pump system 36C, which can be used either for pump down operations or for fracturing operations. In the illustrated example, pumps 112C1,2 are shown mounted on a trailer 114C so that the pumps 112C 1 ,2 can be readily transported to different locations for onsite operation. Additionally, a VFD housing 116C is also mounted on trailer 114C and in which equipment such as VFDs for pumps, isolation breakers, and a motor control center can be situated during operation of pumps 112C12. 'the motor control cabinet can be a breaker cabinet that contains breakers for smaller motors such as blower motors, lube motors, and fan motors.
100361 Shown in Figure 5 is an example of a blender unit 281) shown in a perspective view.
here, blender unit 281) is shown including a hopper 1181) and auger assembly 1191), and wherein the hopper 118D receives sand or other proppant from a sand source, such as a conveyor (shown in Figure 1). Auger assembly 1191), which is an elongated section having barrel and auger screws rotatably disposed within, urge the sand upward. 1-lopper 1181) and auger assembly 119D are mounted on a trailer 1201) and adjacent a mixing tub 1221), which is typically an open top tub where sand, water, and chemicals are mixed together to form a slurry that is then provided to pumps where the fluid is pressurized. The slurry that flows to pumps is directed through a manifold 1241) that mounts on a lower end of trailer 1201). Also included with the blender unit 281) is a control room 1261) which communicates with the datavan, houses operations personnel, and provides monitoring and controls devices for operating and monitoring of the blender unit 281).
100371 An alternate embodiment of a pump down system 108E is shown in a plan schematic view in Figure 6, where turbine set 53E with a gas powered turbine generator generates electricity that is then delivered to a switch gear 92E. Output from switch gear 92E is delivered to transformers 56E1,2 that in turn provide electrical power to pump down pumps 96E1_2 shown mounted on trailers. Electricity from switch gear 92E is also directed to an auxiliary unit 94E
that supplies electricity to both a blender 98E and data van 100E. Included within blender 98E is a pump (not shown) that in some embodiments pressurizes fluid to a boost pressure that is then delivered to the pump down pumps 96E1_2. In an example, the blender 98E
pressurizes the fluid in a range from about 70 psi to about 120 psi. Further, within electric blender 98E chemical additives can be added to the fluid that is then delivered to the pump down pumps. Other examples exist, wherein blender for use with a pump down system is a blender that is part of the fracturing system.
100381 Another alternate example of the pump down system 108F is illustrated in plan schematic view in Figure 7 and where turbine set 53F, which uses gas-powered turbines to generate electricity, delivers electricity to switch gear 92F. In this example, a transformer 56F receives electricity from switch gear 921 and delivers it to other equipment 1101. Also fed by switch gear 92F is auxiliary 94F, which in turn provides electrical power to pump down unit 96F that is independent of electrical power for the hydraulic fracturing pumps. In the embodiment of Fig. 7, the pump down unit 96F can include a small boost pump (capable of, for example, up to about 20 barrels per minute (bpm) at 100 psi instead of about 130bpm for a blender), and a water pump (capable of about 20bpm at 10,000psi) to replace the hydraulic fracturing pumps. Thus, the pump down system 1081' of Fig. 7 is capable of operating separately from the rest of the fracking system, or from the hydraulic fracturing pumps. This flexibility allows use of the electric powered pump down system with any type of hydraulic fracturing system, whether such system is powered by electricity, diesel, or otherwise. This is also true of the embodiments shown in Figs. 3 and 6.
[0039] Figure 8 shows in a side perspective view an example of an auxiliary unit 940 and which includes a trailer 1280 and on which a transformer 1300 and a VFD house 1320 are mounted.
The \ND house 1320 and transformer 1300 can be used to power and control the desired equipment, such as, for example, the blender, the hydration unit, the conveyor, and/or the datavan. The VFD house 1320 can also contain soft starters for, large non speed controlled motors, smaller blower motors and radiator fans for cooling. Power can be provided from turbines, to a switchgear, then to the auxiliary unit 940. The transformer 1300 can be used, for example, to convert power from 13.8kV to 600V to provide power to the VII) house. The blender did not have room to contain its own VFD therefore the Auxiliary Trailer was created to serve this purpose. Each hydraulic fracturing site can benefit from the use of a single auxiliary unit 940 or multiple auxiliary units 940 depending on the individual needs and circumstances at the site.
[0040] Use of auxiliary units 940 is advantageous because each separate auxiliary unit 940 provides a separate power grid, thereby creating multiple power centers, which in turn allows for greater flexibility in the positioning of equipment at a site, and creates redundancy in the operations. The use of auxiliary units 940 also helps with power cable management, providing multiple different cable routing for the equipment.
[0041] The present invention described herein, therefore, is well adapted to carry out the objects and attain the ends and advantages mentioned, as well as others inherent therein. While a presently preferred embodiment of the invention has been given for purposes of disclosure, numerous changes exist in the details of procedures for accomplishing the desired results. These and other similar modifications will readily suggest themselves to those skilled in the art, and are intended to be encompassed within the spirit of the present invention disclosed herein and the scope of the appended claims.
Claims
What is claimed is.
1. A method of operations in a subterranean formation, the method comprising:
driving a pump with an electrically powered motor to pressurize fluid;
inserting a tool into a wellbore that intersects the formation; and directing the pressurized fluid into the wellbore above the tool to push the tool into the wellbore.
2. The method of Claim 1, further comprising urging the tool into the wellbore with the pressurized fluid until the tool reaches a predetermined location in the formation.
3. The method of Claim 1, wherein the tool comprises a perforating gun.
4. The method of Claim 1, wherein the wellbore comprises a first wellbore, and wherein the pressurized fluid is simultaneously directed to a second wellbore that also intersects the subterranean formation.
5. The method of Claim 4, wherein hydraulic fracturing is performed in the second wellbore.
6. The method of Claim 5, wherein the pump comprises a first pump and a second pump, and wherein fluid pressurized by the first pump is directed into the first wellbore to push the tool into the first wellbore, and fluid pressurized by the second pump is directed into the second wellbore to use in hydraulic fracturing.
7. The method of Claim 1, further comprising:
pressurizing fluid with an electric blender to form a boost fluid; and directing the boost fluid to the pump.
8. The method of Claim 1, wherein electricity that powers the motor is generated with a generator that is proximate the electric motor.
9. The method of Claim 8, wherein a wireline system is powered by the electricity.
10. A method of operations in a subterranean formation, the method comprising:
generating electricity;
energizing electric motors with the electricity;
driving a fracturing pump with at least one of the electric motors; and driving a pump down pump with at least one of the electric motors.
11. The method of Claim 10, wherein the electricity is generated by a turbine generator.
12. The method of Claim 10, further comprising powering a sand conveyer and hydration unit with the electricity.
13. The method of Claim 10, further comprising using a first fluid pressurized by the fracturing pump to fracture the formation, and using a second fluid that is pressurized by the pump down pump in a pump down operation.
14. The method of Claim 13, wherein the first fluid is directed to a first wellbore that intersects the formation, and the second fluid is directed to a second wellbore that intersects the formation.
15. A system for use in a subterranean formation operation comprising:
a pump down pump in communication with a first wellbore that intersects the formation, and that pressurizes fluid in the first wellbore;
an electric motor that drives the pump down pump;
a tool positioned in the wellbore below at least a portion of the fluid pressurized by the pump down pump, and that is pushed toward the bottom of the wellbore by the fluid.
16. The system of claim 15, further comprising:
a hydraulic fracturing pump in communication with a second wellbore that intersects the formation, and that pressurizes fluid in the second wellbore; and the electric motor that drives the hydraulic fracturing pump.
17. The system of Claim 15, wherein the electric motor is a first electric motor and a second electric motor, the first electric motor driving the pump down pump, and the second electric motor driving the hydraulic fracturing pump.
I 8. The system of Claim 15, further comprising gas powered turbine generators.
19. The system of Claim 17, further comprising a wireline system that is in electrical communication with the turbine generators.
1. A method of operations in a subterranean formation, the method comprising:
driving a pump with an electrically powered motor to pressurize fluid;
inserting a tool into a wellbore that intersects the formation; and directing the pressurized fluid into the wellbore above the tool to push the tool into the wellbore.
2. The method of Claim 1, further comprising urging the tool into the wellbore with the pressurized fluid until the tool reaches a predetermined location in the formation.
3. The method of Claim 1, wherein the tool comprises a perforating gun.
4. The method of Claim 1, wherein the wellbore comprises a first wellbore, and wherein the pressurized fluid is simultaneously directed to a second wellbore that also intersects the subterranean formation.
5. The method of Claim 4, wherein hydraulic fracturing is performed in the second wellbore.
6. The method of Claim 5, wherein the pump comprises a first pump and a second pump, and wherein fluid pressurized by the first pump is directed into the first wellbore to push the tool into the first wellbore, and fluid pressurized by the second pump is directed into the second wellbore to use in hydraulic fracturing.
7. The method of Claim 1, further comprising:
pressurizing fluid with an electric blender to form a boost fluid; and directing the boost fluid to the pump.
8. The method of Claim 1, wherein electricity that powers the motor is generated with a generator that is proximate the electric motor.
9. The method of Claim 8, wherein a wireline system is powered by the electricity.
10. A method of operations in a subterranean formation, the method comprising:
generating electricity;
energizing electric motors with the electricity;
driving a fracturing pump with at least one of the electric motors; and driving a pump down pump with at least one of the electric motors.
11. The method of Claim 10, wherein the electricity is generated by a turbine generator.
12. The method of Claim 10, further comprising powering a sand conveyer and hydration unit with the electricity.
13. The method of Claim 10, further comprising using a first fluid pressurized by the fracturing pump to fracture the formation, and using a second fluid that is pressurized by the pump down pump in a pump down operation.
14. The method of Claim 13, wherein the first fluid is directed to a first wellbore that intersects the formation, and the second fluid is directed to a second wellbore that intersects the formation.
15. A system for use in a subterranean formation operation comprising:
a pump down pump in communication with a first wellbore that intersects the formation, and that pressurizes fluid in the first wellbore;
an electric motor that drives the pump down pump;
a tool positioned in the wellbore below at least a portion of the fluid pressurized by the pump down pump, and that is pushed toward the bottom of the wellbore by the fluid.
16. The system of claim 15, further comprising:
a hydraulic fracturing pump in communication with a second wellbore that intersects the formation, and that pressurizes fluid in the second wellbore; and the electric motor that drives the hydraulic fracturing pump.
17. The system of Claim 15, wherein the electric motor is a first electric motor and a second electric motor, the first electric motor driving the pump down pump, and the second electric motor driving the hydraulic fracturing pump.
I 8. The system of Claim 15, further comprising gas powered turbine generators.
19. The system of Claim 17, further comprising a wireline system that is in electrical communication with the turbine generators.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201562242173P | 2015-10-15 | 2015-10-15 | |
| US62/242173 | 2015-10-15 | ||
| US15/202085 | 2016-07-05 | ||
| US15/202,085 US10337308B2 (en) | 2012-11-16 | 2016-07-05 | System for pumping hydraulic fracturing fluid using electric pumps |
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| Publication Number | Publication Date |
|---|---|
| CA2945281A1 CA2945281A1 (en) | 2017-04-15 |
| CA2945281C true CA2945281C (en) | 2019-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CA2945281A Active CA2945281C (en) | 2015-10-15 | 2016-10-14 | Electric powered pump down |
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| CA (1) | CA2945281C (en) |
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