Fracturing test system and test bench thereof and electric-driven fracturing equipment

Abstract

A fracturing test system and its test bench and electric-driven fracturing equipment, relating to the technical field of oil and gas fracturing; the fracturing test system comprises an electric device, a hydraulic device, a pipeline device, a mechanical fracturing pump and a hydraulic fracturing pump; the electric device drives and connects the hydraulic device; the pipeline device is provided with the hydraulic device, and the mechanical fracturing pump and the hydraulic fracturing pump are respectively connected to the pipeline device; the hydraulic device is used to increase the oil pressure in the pipeline device and deliver it to the mechanical fracturing pump and / or the hydraulic fracturing pump; the electric device adopts non-frequency conversion technology. The fracturing test bench comprises a fracturing test system; the electric-driven fracturing equipment comprises a fracturing test system. The purpose of the present invention is to provide a fracturing test system and its test bench and electric-driven fracturing equipment, so as to solve the technical problems existing in the prior art that the driving cost is very high and the driving work of fracturing pumps of various specifications cannot be satisfied to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas fracturing, and in particular to a fracturing test system and a test bench thereof, and an electric-driven fracturing device. Background Art

[0002] Fracturing is a method of creating cracks in oil and gas layers by using hydraulic force during oil or gas production. It is also called hydraulic fracturing. Fracturing is the artificial creation of cracks in the formation to improve the flow environment of oil underground and increase the production of oil wells. It plays an important role in improving the flow conditions at the bottom of the oil well, slowing down the interlayer and improving the production of oil layers.

[0003] At present, the drive of electric-driven fracturing equipment and fracturing test benches uses a power distribution system to introduce electricity into the frequency conversion system, and then inputs the power into the frequency conversion motor after the rectifier and inverter, thereby driving the mechanical fracturing pump to perform fracturing operations. Existing electric-driven fracturing equipment and fracturing test benches are driven by frequency conversion motors. Due to the high cost of frequency converters, it is not conducive to the cost control of electric-driven fracturing equipment and fracturing test benches, which affects their promotion. In addition, the frequency conversion motor drive can only drive one type of fracturing pump, and cannot meet the driving work of fracturing pumps of various specifications. Summary of the invention

[0004] The object of the present invention is to provide a fracturing test system and a test bench thereof and an electric-driven fracturing device, so as to solve the technical problems existing in the prior art of high driving cost and inability to meet the driving work of fracturing pumps of various specifications to a certain extent.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A fracturing test system, comprising an electric device, a hydraulic device, a pipeline device, a mechanical fracturing pump and a hydraulic fracturing pump;

[0007] The electric device is driven and connected to the hydraulic device;

[0008] The pipeline device is provided with the hydraulic device, and the mechanical fracturing pump and the hydraulic fracturing pump are respectively connected to the pipeline device; the hydraulic device is used to increase the oil pressure in the pipeline device and transmit it to the mechanical fracturing pump and / or the hydraulic fracturing pump;

[0009] The electric device adopts non-frequency conversion technology.

[0010] In any of the above technical solutions, optionally, the fracturing test system further includes a transfer device;

[0011] The electric device is driven and connected to the hydraulic device through the transfer device.

[0012] In any of the above technical solutions, optionally, the electric device includes one or more electric motors; each of the electric motors is drivingly connected to the transfer device.

[0013] In any of the above technical solutions, optionally, the motor is a distributed asynchronous motor;

[0014] And / or, the transfer device is a transfer case.

[0015] In any of the above technical solutions, optionally, the pipeline device includes a first hydraulic pipeline and a second hydraulic pipeline;

[0016] The hydraulic device is connected to the mechanical fracturing pump via the first hydraulic pipeline;

[0017] The hydraulic device is connected to the hydraulic fracturing pump via the second hydraulic pipeline;

[0018] The oil pressure in the first hydraulic pipeline is lower than the oil pressure in the second hydraulic pipeline.

[0019] In any of the above technical solutions, optionally, the first hydraulic pipeline is connected to the mechanical fracturing pump via a transmission box.

[0020] In any of the above technical solutions, optionally, the fracturing test system includes a water cooling device;

[0021] And / or, the hydraulic device includes one or more oil pumps.

[0022] In any of the above technical solutions, optionally, the water cooling device includes a water cooling pipeline; part or all of the pipeline device is covered with the water cooling pipeline;

[0023] And / or, the pipeline device is a closed-loop pipeline.

[0024] A fracturing test bench comprises a fracturing test system.

[0025] An electric-driven fracturing device comprises a fracturing test system.

[0026] The beneficial effects of the present invention are mainly:

[0027] The fracturing test system and its test bench and electric-driven fracturing equipment provided by the present invention are connected to the hydraulic device through an electric device to drive the hydraulic device to work and increase the oil pressure in the pipeline device, and then the oil with increased pressure is delivered to the mechanical fracturing pump and / or the hydraulic fracturing pump, thereby driving the mechanical fracturing pump and / or the hydraulic fracturing pump to perform fracturing operations. The fracturing test system and its test bench and electric-driven fracturing equipment are connected to the hydraulic device through an electric device to drive the hydraulic device, which can meet the driving requirements of fracturing pumps of various specifications of mechanical fracturing pumps and hydraulic fracturing pumps, improving the mode in the prior art that the variable frequency motor can only drive one type of fracturing pump; in addition, by adopting an electric device with non-variable frequency technology, the cost of the electric device is greatly reduced, which is conducive to the rapid promotion of electric-driven fracturing equipment and fracturing test benches.

[0028] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A first structural schematic diagram of a fracturing test system provided by an embodiment of the present invention;

[0031] Figure 2 for Figure 1 A top view of the fracturing test system is shown;

[0032] Figure 3 A second structural schematic diagram of the fracturing test system provided in an embodiment of the present invention.

[0033] Icons: 100-electric device; 200-transfer device; 300-hydraulic device; 400-pipeline device; 410-first hydraulic pipeline; 420-second hydraulic pipeline; 500-transmission box; 600-mechanical fracturing pump; 700-hydraulic fracturing pump. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0038] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0041] Embodiment 1

[0042] Please refer to Figure 1-Figure 3 , this embodiment provides a fracturing test system; Figure 2 and Figure 3Two structural schematic diagrams of the fracturing test system provided in this embodiment; Figure 1 Shown is a front view of the fracturing test system; Figure 2 for Figure 1 A top view of the fracturing test system is shown; Figure 3 A top view of another structure of the fracturing test system.

[0043] The fracturing test system provided in this embodiment can be used for a fracturing test bench, and can also be used for electric-driven fracturing equipment such as an electric-driven fracturing skid and an electric-driven fracturing vehicle.

[0044] See also Figure 1-Figure 3 As shown, the fracturing test system includes an electric device 100, a hydraulic device 300, a pipeline device 400, a mechanical fracturing pump 600 and a hydraulic fracturing pump 700;

[0045] The electric device 100 drives and connects to the hydraulic device 300;

[0046] The pipeline device 400 is provided with a hydraulic device 300 , and the mechanical fracturing pump 600 and the hydraulic fracturing pump 700 are respectively connected to the pipeline device 400 .

[0047] The hydraulic device 300 is used to increase the oil pressure in the pipeline device 400 and deliver it to the mechanical fracturing pump 600 and / or the hydraulic fracturing pump 700; that is, the oil with increased pressure is delivered to the mechanical fracturing pump 600, or the oil with increased pressure is delivered to the hydraulic fracturing pump 700, or the oil with increased pressure is delivered to the mechanical fracturing pump 600 and the hydraulic fracturing pump 700.

[0048] The electric device 100 adopts non-variable frequency technology.

[0049] The fracturing test system described in this embodiment includes an electric device 100, a hydraulic device 300, a pipeline device 400, a mechanical fracturing pump 600 and a hydraulic fracturing pump 700; the electric device 100 drives and connects the hydraulic device 300, so that the hydraulic device 300 works and the oil pressure in the pipeline device 400 is increased, and then the oil with increased pressure is delivered to the mechanical fracturing pump 600 and / or the hydraulic fracturing pump 700, thereby driving the mechanical fracturing pump 600 and / or the hydraulic fracturing pump 700 to perform fracturing operations. The fracturing test system drives and connects the hydraulic device 300 by the electric device 100, which can meet the driving of multiple specifications of fracturing pumps such as the mechanical fracturing pump 600 and the hydraulic fracturing pump 700, improving the mode in the prior art that the variable frequency motor can only drive one type of fracturing pump; in addition, by adopting the electric device 100 of non-variable frequency technology, the cost of the electric device 100 is greatly reduced, which is conducive to the rapid promotion of electric-driven fracturing equipment and fracturing test benches.

[0050] In the prior art, electric-driven fracturing equipment and fracturing test benches use variable frequency motors to drive mechanical fracturing pumps for fracturing operations; due to the high cost of the frequency converter, it is not conducive to the cost control of electric-driven fracturing equipment and fracturing test benches, and affects their promotion. The fracturing test system described in this embodiment, by adopting the electric device 100 of non-variable frequency technology, greatly reduces the cost of the electric device 100, thereby reducing the cost of the fracturing test system, thereby reducing the cost of electric-driven fracturing equipment and fracturing test benches using the fracturing test system, which is conducive to the rapid promotion of electric-driven fracturing equipment and fracturing test benches. Since the variable frequency motor can only drive one type of fracturing pump, the existing electric-driven fracturing equipment and fracturing test bench cannot meet the driving requirements of fracturing pumps of various specifications; the fracturing test system described in this embodiment, by driving the electric device 100 to connect the hydraulic device 300, can realize the transmission of one or more fracturing pumps, and can meet the driving requirements of mechanical fracturing pumps 600 and hydraulic fracturing pumps 700 and more fracturing pumps of various specifications, thereby improving the test efficiency and the transmission efficiency.

[0051] See also Figure 1-Figure 3 As shown, in an optional solution of this embodiment, the fracturing test system includes a transfer device 200.

[0052] The electric device 100 is driven to connect the hydraulic device 300 through the transfer device 200. The transfer device 200 distributes the power of the electric device 100, so that the electric device 100 can drive and connect a larger number of hydraulic devices 300, thereby meeting the driving requirements of mechanical fracturing pumps 600 and hydraulic fracturing pumps 700 with multiple specifications.

[0053] Optionally, the transfer device 200 is a transfer case.

[0054] See also Figure 1-Figure 3 As shown, in an optional solution of this embodiment, the electric device 100 includes one or more motors. For example, the electric device 100 includes one, two, five, etc. motors. The specific number of motors can be determined based on factors such as the number of fracturing pumps and the output power of the fracturing test system.

[0055] Each electric motor is drive-connected to a transfer gear 200 .

[0056] Optionally, each electric motor is drivingly connected to a transfer case; that is, the number of the electric motors is the same as the number of the transfer cases, and they correspond one to one.

[0057] In an optional solution of this embodiment, the motor is a distributed asynchronous motor. Optionally, the fracturing test system includes one or more distributed asynchronous motors. The fracturing test system uses one or more distributed asynchronous motors as a driving source to drive the hydraulic device 300, thereby realizing the transmission form of one or more fracturing pumps, thereby improving the test efficiency and the transmission efficiency.

[0058] Optionally, the hydraulic device 300 includes one or more oil pumps. The electric device 100 is used as a driving source to drive one or more oil pumps, that is, the electric motor is used as a driving source to drive one or more oil pumps, so as to realize the transmission form of one or more fracturing pumps, thereby improving the test efficiency and the transmission efficiency, and reducing the noise.

[0059] See also Figure 3 As shown, in an optional solution of this embodiment, the pipeline device 400 includes a first hydraulic pipeline 410 and a second hydraulic pipeline 420 .

[0060] The hydraulic device 300 is connected to the mechanical fracturing pump 600 via a first hydraulic pipeline 410 .

[0061] The hydraulic device 300 is connected to the hydraulic fracturing pump 700 via a second hydraulic pipeline 420 .

[0062] The oil pressure in the first hydraulic line 410 is lower than the oil pressure in the second hydraulic line 420. That is, the oil pressure in the first hydraulic line 410 connected to the mechanical fracturing pump 600 is relatively low, and the oil pressure in the second hydraulic line 420 connected to the hydraulic fracturing pump 700 is relatively high.

[0063] Optionally, the oil pressure in the first hydraulic pipeline 410 is 1Mpa-4Mpa, and the oil pressure in the second hydraulic pipeline 420 is 10Mpa-40Mpa. Optionally, the oil pressure in the first hydraulic pipeline 410 is 2Mpa-3Mpa, and the oil pressure in the second hydraulic pipeline 420 is 20Mpa-30Mpa.

[0064] Optionally, the output rotation speed of the mechanical fracturing pump 600 is lower than the output rotation speed of the hydraulic fracturing pump 700 .

[0065] See also Figure 1-Figure 3 As shown, in an optional solution of this embodiment, the first hydraulic pipeline 410 is connected to the mechanical fracturing pump 600 via a transmission box 500. The transmission box 500 is used to improve the transmission efficiency of the mechanical fracturing pump 600.

[0066] In an optional solution of this embodiment, the fracturing test system includes a water cooling device; compared with the prior art that uses a fan for air cooling, the fracturing test system uses a water cooling device for water cooling, which has better cooling effect, lower noise, and is more environmentally friendly.

[0067] Optionally, the water cooling device includes a water cooling pipeline; part or all of the pipeline device 400 is coated with a water cooling pipeline; by coating part or all of the pipeline device 400 with a water cooling pipeline, its structure is simpler, which makes it easier to cool the pipeline device 400 and thus facilitate the cooling of the fracturing test system.

[0068] In this embodiment, the hydraulic device 300 is used to increase the oil pressure in the pipeline device 400. When the oil pressure increases, the oil temperature often increases. Optionally, part of the pipeline of the pipeline device 400 located at the output end of the hydraulic device 300 is covered with a water cooling pipeline.

[0069] See also Figure 1-Figure 3 As shown, in the optional solution of this embodiment, the pipeline device 400 is a closed-loop pipeline. By adopting the closed-loop pipeline mode of the pipeline device 400, a smaller oil tank can be used, and pipelines can be saved and the efficiency of hydraulic oil circulation can be improved.

[0070] Embodiment 2

[0071] Embodiment 2 provides a fracturing test bench, which includes the fracturing test system described in Embodiment 1. The technical features of the fracturing test system disclosed in Embodiment 1 are also applicable to this embodiment, and the technical features of the fracturing test system disclosed in Embodiment 1 will not be described repeatedly.

[0072] The fracturing test bench provided in this embodiment includes a fracturing test system. The fracturing test bench can drive various specifications of fracturing pumps, such as mechanical fracturing pumps and hydraulic fracturing pumps, by connecting the electric device of the fracturing test system to the hydraulic device, thereby improving the mode in the prior art where the variable frequency motor can only drive one type of fracturing pump; in addition, by adopting the electric device of non-variable frequency technology, the cost of the electric device is greatly reduced, which is conducive to the rapid promotion of the fracturing test bench.

[0073] The fracturing test bench described in this embodiment has the advantages of the fracturing test system described in the first embodiment, and the advantages of the fracturing test system disclosed in the first embodiment will not be described repeatedly here.

[0074] Embodiment 3

[0075] Embodiment 3 provides an electric-driven fracturing device, which includes the fracturing test system described in Embodiment 1. The technical features of the fracturing test system disclosed in Embodiment 1 are also applicable to this embodiment, and the technical features of the fracturing test system disclosed in Embodiment 1 will not be described repeatedly.

[0076] The electric-driven fracturing equipment provided in this embodiment includes a fracturing test system. The electric-driven fracturing equipment is, for example, an electric-driven fracturing skid, an electric-driven fracturing vehicle, and the like.

[0077] The electric-driven fracturing equipment can drive various specifications of fracturing pumps, including mechanical fracturing pumps and hydraulic fracturing pumps, by connecting the electric device of the fracturing test system to the hydraulic device, thereby improving the existing mode in which the variable frequency motor can only drive one type of fracturing pump. In addition, by adopting the electric device of non-variable frequency technology, the cost of the electric device is greatly reduced, which is conducive to the rapid promotion of the electric-driven fracturing equipment.

[0078] The electric-driven fracturing equipment described in this embodiment has the advantages of the fracturing test system described in the first embodiment, and the advantages of the fracturing test system disclosed in the first embodiment will not be described again here.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fracturing test system, characterized in that: It comprises an electric device (100), a hydraulic device (300), a pipeline device (400), a mechanical fracturing pump (600) and a hydraulic fracturing pump (700); The electric device (100) is drivingly connected to the hydraulic device (300); The pipeline device (400) is provided with the hydraulic device (300), and the mechanical fracturing pump (600) and the hydraulic fracturing pump (700) are respectively connected to the pipeline device (400); the hydraulic device (300) is used to increase the oil pressure in the pipeline device (400) and transmit it to the mechanical fracturing pump (600) and / or the hydraulic fracturing pump (700); The electric device (100) adopts non-frequency conversion technology; The pipeline device (400) comprises a first hydraulic pipeline (410) and a second hydraulic pipeline (420); The hydraulic device (300) is connected to the mechanical fracturing pump (600) via the first hydraulic pipeline (410); The hydraulic device (300) is connected to the hydraulic fracturing pump (700) via the second hydraulic pipeline (420); The oil pressure in the first hydraulic pipeline (410) is lower than the oil pressure in the second hydraulic pipeline (420); The first hydraulic pipeline (410) is connected to the mechanical fracturing pump (600) via a transmission box (500).

2. The fracturing test system according to claim 1, characterized in that: Also includes a transfer gear (200); The electric device (100) is driven and connected to the hydraulic device (300) via the transfer device (200).

3. The fracturing test system according to claim 2, characterized in that: The electric device (100) includes one or more electric motors; each of the electric motors is drivingly connected to the transfer device (200).

4. The fracturing test system according to claim 3, characterized in that: The motor is a distributed asynchronous motor; And / or, the transfer device (200) is a transfer case.

5. The fracturing test system according to any one of claims 1 to 4, characterized in that: The fracturing test system includes a water cooling device; And / or, the hydraulic device (300) includes one or more oil pumps.

6. The fracturing test system according to claim 5, characterized in that: The water cooling device comprises a water cooling pipeline; part or all of the pipeline device (400) is covered with the water cooling pipeline; And / or, the pipeline device (400) is a closed circulation pipeline.

7. A fracturing test bench, characterized in that: The method comprises the fracturing test system according to any one of claims 1 to 6.

8. An electric-driven fracturing device, characterized in that: The method comprises the fracturing test system according to any one of claims 1 to 6.

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