Double-machine double-pump fracturing pry

Abstract

The invention discloses a double-machine double-pump fracturing pry, and relates to the technical field of oil and gas field development equipment.The double-machine double-pump fracturing pry comprises a pry frame, two power mechanisms, two plunger pumps and a manifold system, and the pry frame comprises a base; the two power mechanisms are arranged on the base at an interval; the two plunger pumps and the two power mechanisms are arranged on the base in a one-to-one correspondence mode, and the two power mechanisms are used for driving the two plunger pumps respectively. The manifold system comprises a water feeding manifold, a water outlet manifold and a transition manifold, the transition manifold comprises two first pipelines arranged in parallel, the two plunger pumps are communicated with the two first pipelines respectively, and the water feeding manifold is selectively communicated with the water outlet manifold through one of the first pipelines. The two power mechanisms are adopted to drive the two plunger pumps to operate correspondingly, the two plunger pumps share the same upper water manifold and the same lower water manifold, the structure is simple, the cost is greatly reduced, the occupied space is smaller, and arrangement is more facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas field development equipment, and particularly relates to a dual-engine and dual-pump fracturing skid. Background Art

[0002] At the oil and gas field fracturing construction site, the configuration mode of the power system adopted by traditional fracturing skid equipment is that the engine is connected to the gearbox and drives the fracturing piston pump through the transmission shaft. That is to say, the power source is the engine, the transmission device is the gearbox and the transmission shaft, and the executing element is the fracturing piston pump. High-pressure liquid is injected into the bottom of the well through the fracturing piston pump. The high-pressure liquid generates a huge pressure at the bottom of the well, causing the rock to crack and form fractures, so as to form or expand fractures, thereby improving the production capacity of oil and gas wells. Due to its portability and integration, the fracturing skid is widely used in various oil and gas field development projects.

[0003] During the fracturing construction process, in order to ensure the continuous and stable operation of the equipment, the power system in the fracturing skid equipment often operates in a "one standby one in use" mode. That is, when an emergency occurs in one set of power systems, in order not to delay the construction, a same standby power system is often placed. However, in the existing fracturing skid equipment, the "one standby one in use" are two sets of power systems that operate independently, and each operates independently without interference, resulting in more structures, larger occupied space and very complex layout of the fracturing skid equipment. Summary of the Invention

[0004] The main object of the present invention is to propose a dual-engine and dual-pump fracturing skid, aiming to solve the technical problems of more structures, larger occupied space and very complex layout in the existing fracturing skid equipment.

[0005] To achieve the above object, the dual-engine and dual-pump fracturing skid proposed by the present invention includes:

[0006] A skid frame, the skid frame includes a base;

[0007] Two power mechanisms, the two power mechanisms are arranged on the base at intervals;

[0008] Two piston pumps, the two piston pumps are correspondingly arranged on the base with the two power mechanisms, and the two power mechanisms are respectively used to drive the two piston pumps;

[0009] A pipe manifold system, the pipe manifold system includes a water inlet manifold, a water outlet manifold and a transition manifold. The transition manifold includes two first pipelines arranged in parallel, and the two piston pumps are respectively communicated with the two first pipelines. The water inlet manifold is selectively communicated with the water outlet manifold through one of the first pipelines.

[0010] In one embodiment, each of the first pipelines includes a water inlet pipe and a water outlet pipe. The inlet of the plunger pump is communicated with the upper water pipe manifold through the water inlet pipe, and the outlet of the plunger pump is communicated with the outlet water pipe manifold through the water outlet pipe. First on-off valves are provided on each of the water inlet pipes and each of the water outlet pipes.

[0011] In one embodiment, the transition pipe manifold further includes a water tank and a second pipeline. The water tank is communicated with the water inlet pipe and the water outlet pipe of each of the first pipelines through the second pipeline, so that the second pipeline can form a circulation loop with each of the first pipelines.

[0012] In one embodiment, the second pipeline further includes two water delivery pipes communicated with the water tank. One of the water delivery pipes is communicated with the connection between the water inlet pipe and the upper water pipe manifold, and the other water delivery pipe is communicated with the connection between the water outlet pipe and the outlet water pipe manifold. Second on-off valves are provided on both of the water delivery pipes.

[0013] In one embodiment, the upper water pipe manifold includes a main pipe and an auxiliary pipe. The water outlet of the main pipe is communicated with each of the water inlet pipes, the water inlet of the main pipe is communicated with the auxiliary pipe, and the auxiliary pipe has two water inlet ports, and the two water inlet ports are respectively communicated with two upper water pipes.

[0014] In one embodiment, a third on-off valve is provided on the main pipe, and an upper water level is formed between the third on-off valve and the water outlet on the main pipe;

[0015] The upper water pipe manifold further includes a water pump and two water supply pipes. The inlet of the water pump is communicated with the auxiliary pipe through one of the water supply pipes, and the outlet of the water pump is communicated with the upper water level through the other water supply pipe.

[0016] In one embodiment, fourth on-off valves are provided on each of the water supply pipes; fifth on-off valves are provided on each of the upper water pipes.

[0017] In one embodiment, the two power mechanisms are arranged side by side and spaced apart along the width direction of the base, and the two plunger pumps are arranged side by side and spaced apart along the width direction of the base;

[0018] Each of the power mechanisms includes an engine and a gearbox. The engine drives the corresponding plunger pump through the gearbox, and the engine, the gearbox and the corresponding plunger pump are arranged in sequence along the length direction of the base.

[0019] In one embodiment, a heat dissipation mechanism is further provided on the base, and the heat dissipation mechanism is used for dissipating heat from the two power mechanisms and the two plunger pumps.

[0020] In one embodiment, the skid also includes a frame, and an installation space is formed by the base and the frame. Both of the power mechanisms and both of the plunger pumps are located in the installation space.

[0021] In the dual-machine and dual-pump fracturing skid of the present invention, two power mechanisms are respectively used to drive two plunger pumps to operate. The two plunger pumps are respectively communicated with two first pipelines arranged in parallel. During fracturing construction, when any one of the plunger pumps operates, the liquid will enter the corresponding first pipeline of the plunger pump through the upper water pipeline network and then enter the plunger pump, so as to output high-pressure liquid to the outlet water pipeline network. The two plunger pumps can operate alternately, so as to achieve "one standby and one in use".

[0022] Compared with the existing fracturing skid equipment that adopts two independently operating power systems, the two plunger pumps in the dual-machine and dual-pump fracturing skid of the present invention share a common upper water pipeline network and an outlet water pipeline network, with fewer structures. This not only greatly reduces the cost, but also occupies less space and is more conducive to layout (simple). BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0024] Figure 1 It is a schematic structural diagram of an embodiment of the dual-machine and dual-pump fracturing skid provided by the present invention;

[0025] Figure 2 It is a top view of an embodiment of the dual-machine and dual-pump fracturing skid provided by the present invention;

[0026] Figure 3 It is a schematic structural diagram of the pipeline network system of an embodiment of the dual-machine and dual-pump fracturing skid provided by the present invention;

[0027] Explanation of the reference numerals in the drawings:

[0028] 100. Dual-pump and dual-engine fracturing skid; 1. Skid frame; 11. Base; 12. Frame; 13. Installation space; 2. Power mechanism; 21. Engine; 22. Gearbox; 3. Plunger pump; 4. Pipe manifold system; 41. Suction pipe manifold; 411. Main pipe; 412. Auxiliary pipe; 413. Suction pipe; 414. Third on-off valve; 415. Water pump; 416. Water supply pipe; 417. Fourth on-off valve; 418. Fifth on-off valve; 42. Discharge pipe manifold; 421. Sixth on-off valve; 43. Transition pipe manifold; 431. First pipeline; 4311. Inlet pipe; 4312. Outlet pipe; 4313. First on-off valve; 432. Second pipeline; 4321. Water transmission pipe; 4322. Second on-off valve; 433. Water tank; 5. Heat dissipation mechanism.

[0029] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present invention, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0033] At the fracturing construction site of oil and gas fields, the configuration method of the power system adopted by traditional fracturing skid equipment is that the engine is connected to the gearbox and drives the fracturing piston pump through the transmission shaft. That is to say, the power source is the engine, the transmission device is the gearbox and the transmission shaft, and the executing element is the fracturing piston pump. High-pressure liquid is injected into the bottom of the well through the fracturing piston pump. The high-pressure liquid generates huge pressure at the bottom of the well, causing the rock to crack and form fractures, forming or expanding fractures, thereby improving the production capacity of oil and gas wells. Due to its portability and integration, the fracturing skid is widely used in various oil and gas field development projects.

[0034] During the fracturing construction process, in order to ensure the continuous and stable operation of the equipment, the power system in the fracturing skid equipment often operates in a "one standby" mode. That is, when an emergency occurs in one set of power systems, in order not to delay the construction, a same standby power system is often placed. However, in the existing fracturing skid equipment, the "one standby" are two independently operating power systems, each operating independently without interference, resulting in a large number of structures in the fracturing skid equipment, large occupied space and very complex layout.

[0035] The present invention proposes a dual-engine dual-pump fracturing skid.

[0036] Please refer to Figures 1 - 3 , in an embodiment of the present invention, the dual-engine dual-pump fracturing skid 100 includes a skid frame 1, two power mechanisms 2, two piston pumps 3 and a manifold system 4; the skid frame 1 includes a base 11; the two power mechanisms 2 are arranged on the base 11 at intervals; the two piston pumps 3 are arranged on the base 11 corresponding to the two power mechanisms 2 respectively, and the two power mechanisms 2 are respectively used to drive the two piston pumps 3; the manifold system 4 includes a water inlet manifold 41, a water outlet manifold 42 and a transition manifold 43, the transition manifold 43 includes two first pipelines 431 arranged in parallel, the two piston pumps 3 are respectively communicated with the two first pipelines 431, and the water inlet manifold 41 is selectively communicated with the water outlet manifold 42 through one of the first pipelines 431.

[0037] The technical solution of the present invention drives the two piston pumps 3 to operate respectively by adopting two power mechanisms 2. The two piston pumps 3 are respectively communicated with the two first pipelines 431 arranged in parallel. During the fracturing construction, when any one of the piston pumps 3 operates, the liquid enters the corresponding piston pump 3 through the water inlet manifold 41 and the corresponding first pipeline 431, and then outputs high-pressure liquid to the water outlet manifold 42; if one of the power mechanisms 2 or the piston pump 3 fails, the other power mechanism 2 and the corresponding piston pump 3 can also be used without delaying the normal fracturing construction; and the two piston pumps 3 share the same water inlet manifold 41 and water outlet manifold 42, with fewer structures, greatly reducing the cost, and occupying less space and being more conducive to layout.

[0038] It should be noted that in this embodiment, the two plunger pumps 3 are not allowed to operate simultaneously. The two first pipelines 431 are arranged in parallel, so that any one of the two plunger pumps 3 can be operated to carry out the fracturing construction. The two plunger pumps 3 can be used alternately, thereby reducing the occurrence of failures.

[0039] Understandably, two of the plunger pumps 3 and two power mechanisms 2 are both arranged on the base 11 of the skid frame 1, so as to facilitate the rapid layout of the fracturing skid at the oil and gas field fracturing construction site. At the same time, it is also convenient to quickly carry through the skid frame 1 without having to disassemble and install again.

[0040] In one embodiment, each first pipeline 431 includes a water inlet pipe 4311 and a water outlet pipe 4312. The inlet of the plunger pump 3 is connected to the upper water manifold 41 through the water inlet pipe 4311, and the outlet of the plunger pump 3 is connected to the water outlet manifold 42 through the water outlet pipe 4312. First on-off valves 4313 are provided on each water inlet pipe 4311 and each water outlet pipe 4312.

[0041] Understandably, the plunger pump 3 is respectively connected to the upper water manifold 41 and the water outlet manifold 42 through the water inlet pipe 4311 and the water outlet pipe 4312, and first on-off valves 4313 are provided on each water inlet pipe 4311 and the water outlet pipe 4312. During the actual fracturing construction process, when one of the fracturing pumps is operating, the first on-off valves 4313 on its corresponding first pipeline 431 are all opened, and the first on-off valves 4313 on the other first pipeline 431 are all closed, so as to prevent the liquid from flowing into the two first pipelines 431 simultaneously, avoid interference between the two first pipelines 431 arranged in parallel, and thus avoid affecting the efficiency.

[0042] Moreover, the first on-off valves 4313 also facilitate the rapid switching between the two first pipelines 431 and the alternate use of the two plunger pumps 3.

[0043] In a specific embodiment, since the water inlet pipe 4311 and the water outlet pipe 4312 are directly connected to the plunger pump 3, in order to facilitate the layout of the water inlet pipe 4311 and the water outlet pipe 4312, the water inlet pipe 4311 and the water outlet pipe 4312 can both be fixed on the skid frame 1 by using rigid water pipes, with a stable structure and convenient layout.

[0044] In one embodiment, the transition manifold 43 further includes a water tank 433 and a second pipeline 432. The water tank 433 is respectively connected to the water inlet pipe 4311 and the water outlet pipe 4312 of each first pipeline 431 through the second pipeline 432, so that the second pipeline 432 can form a circulation loop with each first pipeline 431.

[0045] Understandably, the transition manifold 43 further includes a water tank 433 and a second pipeline 432. A certain amount of water can be stored in the water tank 433, and the water tank 433 forms a circulation loop with the first pipeline 431 through the second pipeline 432. After the plunger pump 3 is used up, the water in the water tank 433 can be used to clean the plunger pump 3. The water in the water tank 433 enters the plunger pump 3 through the water inlet pipe 4311 and returns to the water tank 433 from the water outlet pipe 4312, repeating the cycle to clean the plunger pump 3 and saving water resources.

[0046] It should be noted that if the water storage capacity of the water tank 433 is sufficient, the water in the water tank 433 can also be used for fracturing construction.

[0047] In one embodiment, the second pipeline 432 further includes two water delivery pipes 4321 communicating with the water tank 433. One of the water delivery pipes 4321 communicates with the connection between the water inlet pipe 4311 and the upper water manifold 41, and the other water delivery pipe 4321 communicates with the connection between the water outlet pipe 4312 and the water outlet manifold 42. Second on-off valves 4322 are provided on both water delivery pipes 4321.

[0048] Understandably, the second pipeline 432 consists of two water delivery pipes 4321, and second on-off valves 4322 are provided on both water delivery pipes 4321. When filling water into the plunger pump 3 through the upper water manifold 41, the second on-off valves 4322 on both water delivery pipes 4321 are closed to prevent the water flow from dispersing into the water tank 433 and thus affecting the fracturing efficiency; in addition, when the first on-off valves 4313 on the two first pipelines 431 are closed and the second on-off valves 4322 are opened, water can be injected into the water tank 433 through the upper water manifold 41; moreover, the water tank 433 is also connected to the water outlet manifold 42 through a water delivery pipe 4321. After cleaning the shaft of the plunger pump 3, the water in the water tank 433 can also be discharged through the water outlet manifold 42. The water tank 433 and the two plunger pumps 3 share the same upper water manifold 41 and water outlet manifold 42, saving costs and occupying less space.

[0049] It should be noted that the water tank 433 may not be arranged on the skid 1. It can be separately arranged on the open space beside the fracturing construction, which is convenient for handling and also avoids the water tank 433 occupying too much space on the skid 1; in some embodiments, when the water tank 433 is separately arranged outside the skid 1, the two water delivery pipes 4321 can be made of flexible water pipes, which is convenient for arrangement and handling.

[0050] Moreover, one of the water delivery pipes 4321 communicates with the connection between the water inlet pipe 4311 and the upper water manifold 41, and the other water delivery pipe 4321 communicates with the connection between the water outlet pipe 4312 and the water outlet manifold 42, thereby reducing the pipe joints required for the connecting pipelines, reducing costs, and being easier to arrange.

[0051] In one embodiment, the water supply pipe assembly 41 includes a main pipe 411 and an auxiliary pipe 412. The water outlet of the main pipe 411 is communicated with each water inlet pipe 4311, the water inlet of the main pipe 411 is communicated with the auxiliary pipe 412, and the auxiliary pipe 412 has two water inlets, and the two water inlets are respectively communicated with two water supply pipes 413.

[0052] It can be understood that by providing two water inlets on the auxiliary pipe, water supply can be carried out through the two water supply pipes 413 at the same time, thereby increasing the water supply volume. When supplying water, water enters the auxiliary pipe 412 from the two water supply pipes 413, then enters the main pipe 411, and then enters the water inlet pipe 4311 from the main pipe 411, thereby realizing the water supply of the plunger pump 3.

[0053] Among them, the two water inlets can be located at different positions on the auxiliary pipe 412, or the two water inlets are located at the same position, and the auxiliary pipe 412 and the two water supply pipes 413 are connected through a pipe joint at the same time.

[0054] It should be noted that the main pipe 411 and the auxiliary pipe 412 can be two sections of the same pipe formed integrally. In actual layout, according to specific layout requirements and layout environments, the main pipe 411 and the auxiliary pipe 412 can also be two independent pipes connected by a pipe joint.

[0055] In one embodiment, a third on-off valve 414 is provided on the main pipe 411, and a water level is formed between the third on-off valve 414 and the water outlet on the main pipe 411; the water supply pipe assembly 41 further includes a water pump 415 and two water delivery pipes 416. The inlet of the water pump 415 is communicated with the auxiliary pipe 412 through one of the water delivery pipes 416, and the outlet of the water pump 415 is communicated with the water level through the other water delivery pipe 416.

[0056] It can be understood that the water supply pipe assembly 41 further includes a water pump 415 and a water delivery pipe 416. When supplying water to the plunger pump 3, water enters the auxiliary pipe 412 from the two water supply pipes 413, then enters the water delivery pipe 416, passes through the water pump 415 and then enters the main pipe 411 through the other water delivery pipe 416, and then enters the water inlet pipe 4311 from the main pipe 411; and, since a third on-off valve 414 is provided on the main pipe 411, after the third on-off valve 414 is closed, the water in the main pipe 411 is prevented from entering the auxiliary pipe 412 under the action of the water pump 415, so as to affect the fracturing construction efficiency.

[0057] Therefore, in this embodiment, there are two ways to realize the water supply of the plunger pump 3. One is the water supply without the water pump 415, and the other is the water supply using the water pump 415; when there is no water pump 415 for water supply, the third on-off valve 414 is opened, and at this time, pumping can also be carried out under the action of the plunger pump 3 to supply the plunger pump 3 itself.

[0058] In addition, by setting up the water pump 415, it is further convenient to supply water to the water tank 433.

[0059] Specifically, in some embodiments, the main pipe 411, the water delivery pipe 4321, and the two water inlet pipes 4311 can be connected through a cross pipe joint.

[0060] In one embodiment, a fourth on-off valve 417 is provided on each water delivery pipe 416; a fifth on-off valve 418 is provided on each water supply pipe 413. It can be understood that a fourth on-off valve 417 is provided on the water delivery pipe 416, and the fourth on-off valve 417 is opened when the water pump 415 is needed to pump water and closed when the water pump 415 is not needed to prevent the dispersion of water flow and affect the efficiency; a fifth on-off valve 418 is provided on the water supply pipe 413, and closing the fifth on-off valve 418 when not pumping water can prevent impurities from entering the water supply pipe 413 and blocking the water supply pipe 413.

[0061] In one embodiment, the sewer pipe assembly includes a main sewer pipe 411, and a sixth on-off valve 421 is provided on the main sewer pipe 411.

[0062] As Figure 3 shown, in this embodiment, for the convenience of description, the above two plunger pumps 3 are respectively the 1# plunger pump 3 and the 2# plunger pump 3. The serial numbers of the first on-off valves 4313 on the two water inlet pipes 4311 are 6# and 7# respectively, the serial numbers of the first on-off valves 4313 on the two water outlet pipes 4312 are 10# and 11# respectively, the serial numbers of the second on-off valves 4322 on the two water delivery pipes 4321 are 8# and 9# respectively, the serial number of the third on-off valve 414 on the main pipe 411 is 3#, the serial numbers of the fourth on-off valves 417 on the two water delivery pipes 416 are 4# and 5# respectively, and the serial numbers of the fifth on-off valves 418 on the two water supply pipes 413 are 1# and 2# respectively; the specific control logics of the first on-off valve 4313, the second on-off valve 4322, the third on-off valve 414, the fourth on-off valve 417, the fifth on-off valve 418, and the sixth on-off valve 421 are shown in Table 1 below:

[0063]

[0064]

[0065] Table 1

[0066] As shown in Table 1, it is divided into two cases. One is to supply water using the water pump 415, and the other is not to use the water pump 415 to supply water. The above table respectively illustrates the states of the first on-off valve 4313, the second on-off valve 4322, the third on-off valve 414, the fourth on-off valve 417, the fifth on-off valve 418, and the sixth on-off valve 421 when the two plunger pumps 3 are respectively used for construction and flushing the plunger pumps 3 in the above two cases.

[0067] In one embodiment, two power mechanisms 2 are arranged side by side at intervals in the width direction of the base 11, and two plunger pumps 3 are arranged side by side at intervals in the width direction of the base 11; each power mechanism 2 includes an engine 21 and a gearbox 22, the engine 21 drives the corresponding plunger pump 3 through the gearbox 22, and the engine 21, the gearbox 22 and the corresponding plunger pump 3 are arranged in sequence in the length direction of the base 11.

[0068] It should be noted that the width direction herein is the Figure 2 left - right direction as shown, and the length direction is the Figure 2 front - back direction as shown.

[0069] It can be understood that the two power mechanisms 2 and the two plunger pumps 3 are both arranged side by side in the width direction of the base 11, with a compact structure which is conducive to layout. Moreover, the side - by - side arrangement of the two plunger pumps 3 also makes it easier to arrange the water supply manifold 41 and the water discharge manifold 42.

[0070] The engine 21, the gearbox 22 and the corresponding plunger pump 3 are arranged in sequence in the length direction of the base 11, which is more conducive to power transmission to drive the operation of the plunger pump 3 and has a more reasonable layout.

[0071] Specifically, in this embodiment, the engine 21 is a diesel - driven engine 21, with more powerful power.

[0072] In one embodiment, a heat dissipation mechanism 5 is further arranged on the base 11, and the heat dissipation mechanism 5 is used to dissipate heat from the two power mechanisms 2 and the two plunger pumps 3.

[0073] It can be understood that the heat dissipation mechanism 5 is used to dissipate heat from each engine 21, each gearbox 22 and each plunger pump 3. Specifically, the heat dissipation mechanism 5 is mainly used to dissipate heat from the cylinder jacket water of the engine 21, the oil of the gearbox 22, and the lubricating oil at the power end of the plunger pump 3.

[0074] Specifically, in some embodiments, the heat dissipation mechanism 5 includes a heat conduction pipe, heat dissipation fins and a fan. The heat conduction pipe conducts heat to the heat dissipation fins, and the fan blows air towards the heat conduction fins to dissipate heat; the heat dissipation fins and the fan are both arranged on the base 11 and on the side of the engine 21 facing away from the gearbox 22. The heat dissipation fins are concentrated in one position, so as to achieve simultaneous heat dissipation, which is easy to arrange and reduces costs.

[0075] In some other embodiments, the heat dissipation mechanism can directly adopt a radiator in the prior art.

[0076] In one embodiment, the skid 1 further includes a frame 12, the base 11 and the frame 12 enclose an installation space 13, and the two power mechanisms 2 and the two plunger pumps 3 are both located in the installation space 13.

[0077] Understandably, the skid 1 encloses an oil installation space 13, and each power mechanism 2 and each plunger pump 3 are arranged in the installation space 13. Such a skid 1 is not only conducive to layout, but also during the transportation process, the frame 12 of the skid 1 can better protect the plunger pump 3 and the like inside. At the same time, the frame 12 structure is also conducive to arranging other structures.

[0078] Furthermore, in some embodiments, a lubrication system is also provided on the base 11. The lubrication system is used to supply lubricating oil to the power end of the plunger pump 3, the output end of the engine 21, and the gearbox 22. Specifically, the lubrication system includes a lubricating oil tank, an oil pump, and an oil pipe. The lubricating oil in the lubricating oil tank is transported to the power end of the plunger pump 3, the output end of the engine 21, and the gearbox 22 through the oil pump for lubrication.

[0079] Among them, the heat dissipation mechanism 5 is also used to dissipate heat from the lubricating oil. Specifically, one heat conduction pipe is externally connected to the oil pipe. When the lubricating oil passes through the position of the oil pipe during the circulation process, the heat is transferred to the heat conduction pipe through the oil pipe, thereby realizing heat dissipation.

[0080] The above is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A dual-machine dual-pump fracturing skid (100), characterized in that: include: A pry frame (1), the pry frame (1) comprising a base (11); Two power mechanisms (2), the two power mechanisms (2) being arranged on the base (11) at intervals; Two plunger pumps (3), the two plunger pumps (3) and the two power mechanisms (2) being arranged on the base (11) in a one-to-one correspondence, and the two power mechanisms (2) being used to drive the two plunger pumps (3) respectively; A manifold system (4), the manifold system (4) comprising a water supply manifold (41), a water outlet manifold (42) and a transition manifold (43), the transition manifold (43) comprising two first pipelines (431) arranged in parallel, the two plunger pumps (3) being respectively connected to the two first pipelines (431), and the water supply manifold (41) being selectively connected to the water outlet manifold (42) via one of the first pipelines (431).

2. The dual-machine dual-pump fracturing skid (100) according to claim 1, characterized in that: Each of the first pipelines (431) comprises a water inlet pipe (4311) and a water outlet pipe (4312); the inlet of the plunger pump (3) is connected to the water supply manifold (41) through the water inlet pipe (4311); the outlet of the plunger pump (3) is connected to the water outlet manifold (42) through the water outlet pipe (4312); and each of the water inlet pipes (4311) and each of the water outlet pipes (4312) is provided with a first on-off valve (4313).

3. The dual-machine dual-pump fracturing skid (100) according to claim 2, characterized in that: The transition manifold (43) further comprises a water tank (433) and a second pipeline (432); the water tank (433) is respectively connected to the water inlet pipe (4311) and the water outlet pipe (4312) of each of the first pipelines (431) through the second pipeline (432), so that the second pipeline (432) can form a circulation loop with each of the first pipelines (431).

4. The dual-machine dual-pump fracturing skid (100) according to claim 3, characterized in that: The second pipeline (432) also includes two water pipes (4321) connected to the water tank (433), wherein one of the water pipes (4321) is connected to the connection point between the water inlet pipe (4311) and the water supply manifold (41), and the other water pipe (4321) is connected to the connection point between the water outlet pipe (4312) and the water outlet manifold (42), and a second on-off valve (4322) is provided on both of the water pipes (4321).

5. The dual-machine dual-pump fracturing skid (100) according to claim 2, characterized in that: The water supply manifold (41) comprises a main pipe (411) and an auxiliary pipe (412); the water outlet of the main pipe (411) is connected to each of the water inlet pipes (4311); the water inlet of the main pipe (411) is connected to the auxiliary pipe (412); the auxiliary pipe (412) has two water supply ports, and the two water supply ports are respectively connected to two water supply pipes (413).

6. The dual-machine dual-pump fracturing skid (100) according to claim 5, characterized in that: The main pipe (411) is provided with a third on-off valve (414), and an upper water level is formed between the third on-off valve (414) and the water outlet on the main pipe (411); The water supply manifold (41) further comprises a water pump (415) and two water supply pipes (416); the inlet of the water pump (415) is connected to the auxiliary pipe (412) through one of the water supply pipes (416); and the outlet of the water pump (415) is connected to the upper water level through the other water supply pipe (416).

7. The dual-machine dual-pump fracturing skid (100) according to claim 2, characterized in that: Each of the water supply pipes (416) is provided with a fourth on-off valve (417); each of the water supply pipes (413) is provided with a fifth on-off valve (418).

8. The dual-machine dual-pump fracturing skid (100) according to any one of claims 1 to 7, characterized in that: The two power mechanisms (2) are arranged side by side and spaced apart along the width direction of the base (11), and the two plunger pumps (3) are arranged side by side and spaced apart along the width direction of the base (11); Each of the power mechanisms (2) comprises an engine (21) and a gearbox (22), the engine (21) drives the corresponding plunger pump (3) via the gearbox (22), and the engine (21), the gearbox (22) and the corresponding plunger pump (3) are arranged in sequence along the length direction of the base (11).

9. The dual-machine dual-pump fracturing skid (100) according to any one of claims 1 to 7, characterized in that: A heat dissipation mechanism (5) is also provided on the base (11), and the heat dissipation mechanism (5) is used to dissipate heat from the two power mechanisms (2) and the two plunger pumps (3).

10. The dual-machine dual-pump fracturing skid (100) according to any one of claims 1 to 7, characterized in that: The skid frame (1) further comprises a frame (12), the base (11) and the frame (12) enclose an installation space (13), and the two power mechanisms (2) and the two plunger pumps (3) are both located in the installation space (13).

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