Hydraulic fracturing operation table and hydraulic fracturing test system

Abstract

The utility model relates to the field of ground stress testing, and provides a hydraulic fracturing operation table and a hydraulic fracturing testing system.The hydraulic fracturing operation table comprises a cabinet body, a controller, a first pipeline, a branch pipeline set and a flow divider, and the controller, the first pipeline, the branch pipeline set and the flow divider are arranged in the cabinet body; the branch pipeline group is connected with a second interface of the flow divider; the branch pipeline set is provided with an electromagnetic valve set which is electrically connected with the controller and used for controlling opening and closing of the branch pipeline set. In order to overcome the defects that in the prior art, a pressure device with discrete accessories needs to be assembled on site and operated manually, according to the hydraulic fracturing operation table, a first pipeline, a branch pipeline set and a flow divider are pre-connected and arranged in a cabinet body, and an electromagnetic valve set is arranged on the branch pipeline set; the electromagnetic valve set and the controller achieve automatic control over the branch pipeline, the efficiency of the hydraulic fracturing process is improved, the automation degree is improved, and operation is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of geostress testing, and in particular to a hydraulic fracturing operating table and a hydraulic fracturing testing system. Background Art

[0002] The hydraulic fracturing method is also called the hydraulic fracturing method. It is a method for measuring absolute ground stress. When measuring, first take a section of the borehole with exposed bedrock, seal the upper and lower ends with a packer; then inject liquid and pressurize until the hole wall breaks, and record the change of pressure over time, and use a mold or downhole television to observe the fracture direction. According to the recorded fracture pressure, pump-off pressure and fracture direction, the size and direction of the original principal stress are calculated using the corresponding formula.

[0003] Existing fracturing devices are all discrete parts that need to be assembled and debugged after arriving at the site, which is inefficient and requires manual switching, making operation inconvenient. Summary of the invention

[0004] The present invention provides a hydraulic fracturing operating table and a hydraulic fracturing testing system, which are used to solve the defects in the prior art that the pressure devices of discrete accessories need to be assembled on site and operated manually, and realize an integrally arranged hydraulic fracturing operating table, adopt a solenoid valve group to realize automatic control, improve efficiency, and facilitate operation.

[0005] The present invention provides a hydraulic fracturing operation table, comprising: a cabinet and a controller placed in the cabinet, a first pipeline, a branch pipeline group and a diverter, wherein the first pipeline is connected to a first interface of the diverter, and the branch pipeline group is connected to a second interface of the diverter;

[0006] The branch pipeline group is provided with a solenoid valve group, and the solenoid valve group is electrically connected to the controller for controlling the switch of the branch pipeline group.

[0007] According to the hydraulic fracturing operation table provided by the present invention, a pressure sensor group is arranged on the branch pipeline group, a first pressure sensor and a flow sensor are arranged on the first pipeline, and the pressure sensor group, the first pressure sensor and the flow sensor are all electrically connected to the controller.

[0008] According to the hydraulic fracturing operating table provided by the present invention, the branch pipeline group includes a first branch pipeline and a second branch pipeline, the first branch pipeline is used to connect with the isolation assembly of the hydraulic fracturing stress device, and the second branch pipeline is connected with the pressurized pipeline of the hydraulic fracturing stress device.

[0009] According to the hydraulic fracturing operating platform provided by the present invention, the branch pipeline group further includes a third branch pipeline, and the third branch pipeline is used for drainage.

[0010] According to the hydraulic fracturing operation platform provided by the present invention, the branch pipeline group further includes a fourth branch pipeline, and the fourth branch pipeline serves as a spare pipeline.

[0011] The hydraulic fracturing operating table provided by the present invention further comprises an operating panel, which is mounted on the cabinet. The operating panel comprises operating buttons, which are connected to the controller and are used to control the switch of the solenoid valve group.

[0012] According to the hydraulic fracturing operating platform provided by the present invention, the operating panel includes a display screen, and the display screen is electrically connected to the controller for displaying data.

[0013] According to the hydraulic fracturing operating platform provided by the present invention, the branch pipeline group adopts pressure-resistant pipes.

[0014] According to the hydraulic fracturing operating platform provided by the present invention, the branch pipeline group and the first pipeline are provided with connectors.

[0015] The present invention also provides a hydraulic fracturing test system, comprising a hydraulic fracturing stress device, a water pump and the hydraulic fracturing operating table;

[0016] The water pump is connected to the first pipeline, and the hydraulic fracturing stress device is connected to the branch pipeline group.

[0017] The hydraulic fracturing operating table provided by the present invention is arranged in a cabinet by pre-connecting a first pipeline, a branch pipeline group and a diverter, and arranging a solenoid valve group on the branch pipeline group. The solenoid valve group and a controller realize automatic control of the branch pipeline, thereby improving the efficiency of the hydraulic fracturing process, and improving the degree of automation, making the operation more convenient.

[0018] Furthermore, in the hydraulic fracturing test system provided by the present invention, since it is provided with the hydraulic fracturing operating table as described above, it also has the various advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the hydraulic fracturing operating table provided by the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the hydraulic fracturing operating table provided by the present invention;

[0022] Figure 3 This is one of the schematic diagrams of the operation interface structure provided by the present invention;

[0023] Figure 4 This is the second schematic diagram of the operation interface structure provided by the present invention.

[0024] Reference numerals:

[0025] 100: cabinet; 101: upper cover; 102: lock; 103: support; 104: first handle; 105: second handle; 110: display screen; 120: operation button; 130: indicator light; 200: first pipeline; 201: branch pipeline group; 202: diverter; 210: first branch pipeline; 220: second branch pipeline; 230: third branch pipeline; 240: fourth branch pipeline; 211: solenoid valve group; 212: pressure sensor group; 213: connector; 214: first pressure sensor; 215: flow sensor; 300: hydraulic fracturing stress device; 301: isolation assembly; 302: pressurized pipeline; 400: water pump. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. 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.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0030] Combine the following Figures 1 to 4 It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute a limitation on the present invention.

[0031] like Figure 1 As shown, the present invention provides a hydraulic fracturing operation table, including: a cabinet 100 and a controller placed in the cabinet 100, a first pipeline 200, a branch pipeline group 201 and a diverter 202, the first pipeline 200 is connected to a first interface of the diverter 202, and the branch pipeline group 201 is connected to a second interface of the diverter 202; the branch pipeline group 201 is provided with a solenoid valve group 211, and the solenoid valve group 211 is electrically connected to the controller for controlling the switch of the branch pipeline group 201.

[0032] That is, the medium enters from the first pipeline 200 and is connected to each branch in the branch pipeline group 201 through the flow divider 202. The controller controls the switch of the solenoid valve group 211 of the branch pipeline group 201, so that the medium is connected to the designated branch through the flow divider 202. Of course, the controller can control one or more solenoid valves of the solenoid valve group 211 to open and close.

[0033] Among them, the first pipeline 200 and each branch in the branch pipeline group 201 are arranged in parallel, the diverter 202 is arranged vertically to the first pipeline 200, the first pipeline 200, the branch pipeline group 201 and the diverter 202 are fixedly installed in the cabinet 100, and the inlet of the first pipeline 200 and the outlet of the branch pipeline group 201 extend out of the cabinet 100 for easy connection.

[0034] Further, in one embodiment of the present invention, the branch pipeline group 201 and the first pipeline 200 are provided with a connector 213. For example, the connector 213 can be a threaded joint, which can be a KJ10 standard joint. The connector 213 runs through the cabinet 100 and is detachably mounted on the cabinet 100. The solenoid valve group 211 is installed between the connector 213 of the branch pipeline group 201 and the pipe body of the branch pipeline group 201. The connector 213 of the first pipeline 200 is installed at the inlet of the pipe body of the first pipeline 200.

[0035] In the embodiment of the present invention, the connector 213 may be disposed on one side of the cabinet 100 .

[0036] Continue to refer Figure 1 In another embodiment of the present invention, a pressure sensor group 212 is provided on the branch pipeline group 201, and a first pressure sensor 214 and a flow sensor 215 are provided on the first pipeline 200. The pressure sensor group 212, the first pressure sensor 214 and the flow sensor 215 are all electrically connected to the controller.

[0037] Specifically, the pressure sensor group 212 collects the pressure of each branch of the branch pipeline group 201 and sends it to the controller, the first pressure sensor 214 collects the pressure of the first pipeline 200 and sends it to the controller, and the flow sensor 215 collects the flow data of the first pipeline 200 and sends it to the controller. The controller is fixed in the cabinet 100 and is connected to the pressure sensor group 212, the first pressure sensor 214 and the flow sensor 215. Among them, the flow sensor 215 can adopt a 0-30L ultrasonic flow sensor 215, and the flow sensor 215 is set at a distance of 15CM from the first pressure sensor 214.

[0038] In addition, in a specific embodiment of the present invention, the branch pipeline group 201 includes a first branch pipeline 210 and a second branch pipeline 220, the first branch pipeline 210 is used to connect to the isolation assembly 301 of the hydraulic fracturing stress device 300, and the second branch pipeline 220 is connected to the pressurized pipeline 302 of the hydraulic fracturing stress device 300.

[0039] Among them, for the hydraulic fracturing stress device 300, the hydraulic fracturing stress device 300 includes a sealing component 301 and a pressurized pipe 302. The sealing component 301 is placed in the borehole. The sealing component 301 includes a first sealing component and a second sealing component. There is a gap between the first sealing component and the second sealing component. The pressurized pipe 302 is connected to the gap between the first sealing component and the second sealing component.

[0040] During the stress measurement process, the controller controls the second solenoid valve on the first branch pipeline 210 to open, the first branch pipeline 210 is connected to the packing assembly 301, and after pressurizing the packing assembly 301, the packing assembly 301 seals the borehole. After the borehole is sealed, the controller controls the third solenoid valve on the second branch pipeline 220 to open, the second branch pipeline 220 passes the medium into the interval through the pressurizing pipeline 302, and pressurizes until the hole wall breaks, and the controller controls the third solenoid valve to close.

[0041] In addition, in some embodiments of the present invention, the branch pipeline group 201 further includes a third branch pipeline 230, and the third branch pipeline 230 is used for drainage. For example, the third branch pipeline 230 is connected to the water tank. During the pressure relief process, the controller opens the fourth solenoid valve of the third branch pipeline 230, so that the medium in the interval of the packing assembly 301 is discharged from the third branch pipeline 230, and the first pipeline 200 stops taking water. Of course, during the disassembly process of the packing assembly 301, the second solenoid valve of the first branch pipeline 210 can be opened to discharge the medium in the packing assembly 301 from the third branch pipeline 230.

[0042] Furthermore, in an optional embodiment of the present invention, the branch pipeline group 201 further includes a fourth branch pipeline 240, which is used as a backup pipeline. A fifth solenoid valve is provided on the fourth branch pipeline 240, and when other branch pipelines fail, the fifth solenoid valve can be replaced and connected to the fourth branch pipeline 240. In addition, the fourth branch pipeline 240 can also be connected to other systems to work while the first branch pipeline 210, the second branch pipeline 220 and the third branch pipeline 230 are working.

[0043] For the first pipeline 200 , the first pipeline 200 is connected to the water pump 400 , and the connector 213 is installed between the water pump 400 and the first pressure sensor 214 .

[0044] In other embodiments of the present invention, the branch pipeline group 201 adopts a pressure-resistant pipe. For example, a titanium alloy pipe with an inner diameter of 6 mm can be used. Of course, the first pipeline 200 can also adopt a titanium alloy pipe. The diverter 202 is a pressure-resistant accessory with a closed cavity. Among them, the range of the pressure sensor group 212 and the first pressure sensor 214 can be 0-60Mpa, and the accuracy is 1‰. The solenoid valve group 211 can adopt a voltage of 24V and a maximum pressure of 60Mpa.

[0045] like Figure 2 and Figure 3 As shown, in another optional embodiment of the present invention, the hydraulic fracturing operation table further includes an operation panel, which is mounted on the cabinet 100 . The operation panel includes an operation button 120 , which is connected to the controller and is used to control the switch of the solenoid valve group 211 .

[0046] For example, the operation panel is placed on the top of the cabinet 100, and the operation button 120 corresponds one-to-one to the solenoid valve group 211 of the branch pipe group 201. By pressing the operation button 120, the switch of the corresponding solenoid valve group 211 can be controlled, which makes the operation more convenient and more automated.

[0047] In addition, each operation button 120 is also matched with an indicator light 130 , and when the corresponding solenoid valve is opened, the corresponding indicator light 130 lights up.

[0048] In some other embodiments of the present invention, the operation panel includes a display screen 110, which is electrically connected to the controller and is used to display data. For example, the display screen 110 is used to display data collected by the controller through the pressure sensor group 212, the first pressure sensor 214 and the flow sensor 215.

[0049] like Figure 4 As shown, in some embodiments of the present invention, the hydraulic fracturing operation table further includes an upper cover 101, which is rotatably connected to the cabinet 100, and an operation panel is located inside the upper cover 101, and the upper cover 101 is used to protect the operation panel. The inlet of the first pipeline 200 and the outlet of the branch pipeline group 201 are both placed inside the upper cover 101.

[0050] Among them, a lock buckle 102 is provided between the upper cover 101 and the cabinet 100, and the lock buckle 102 can buckle the upper cover 101 and the cabinet 100 for easy transportation. A first handle 104 is provided at the front end of the upper cover 101 to facilitate opening of the upper cover 101, and a second handle 105 is provided on both sides of the cabinet 100 to facilitate the transportation of the hydraulic fracturing operating table. A plurality of supports 103 are provided at the bottom of the cabinet 100, and the height of the supports 103 is adjustable to facilitate leveling of the cabinet 100.

[0051] The present invention also provides a hydraulic fracturing test system, comprising a hydraulic fracturing stress device 300 , a water pump 400 and the hydraulic fracturing operating table of the above embodiment; the water pump 400 is connected to the first pipeline 200 , and the hydraulic fracturing stress device 300 is connected to the branch pipeline group 201 .

[0052] The hydraulic fracturing operating table provided by the present invention is placed in a cabinet 100 by pre-connecting the first pipeline 200, the branch pipeline group 201 and the diverter 202, and arranging a solenoid valve group 211 on the branch pipeline group 201. The solenoid valve group 211 and the controller realize automatic control of the branch pipeline, thereby improving the efficiency of the hydraulic fracturing process, and improving the degree of automation, making the operation more convenient.

[0053] Furthermore, in the hydraulic fracturing test system provided by the present invention, since it is provided with the hydraulic fracturing operating table as described above, it also has the various advantages as described above.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydraulic fracturing operating table, characterized in that: include: A cabinet and a controller, a first pipeline, a branch pipeline group and a flow divider placed in the cabinet, wherein the first pipeline is connected to a first interface of the flow divider, and the branch pipeline group is connected to a second interface of the flow divider; The branch pipeline group is provided with a solenoid valve group, and the solenoid valve group is electrically connected to the controller for controlling the switch of the branch pipeline group.

2. The hydraulic fracturing operation platform according to claim 1, characterized in that: The branch pipeline group is provided with a pressure sensor group, the first pipeline is provided with a first pressure sensor and a flow sensor, and the pressure sensor group, the first pressure sensor and the flow sensor are all electrically connected to the controller.

3. The hydraulic fracturing operation platform according to claim 1, characterized in that: The branch pipeline group includes a first branch pipeline and a second branch pipeline, the first branch pipeline is used to connect with the isolation assembly of the hydraulic fracturing stress device, and the second branch pipeline is connected with the pressurized pipeline of the hydraulic fracturing stress device.

4. The hydraulic fracturing operation platform according to claim 3, characterized in that: The branch pipe group also includes a third branch pipe, and the third branch pipe is used for drainage.

5. The hydraulic fracturing operation platform according to claim 3, characterized in that: The branch pipeline group also includes a fourth branch pipeline, and the fourth branch pipeline serves as a spare pipeline.

6. The hydraulic fracturing operation platform according to any one of claims 1 to 5, characterized in that: It also includes an operation panel, which is installed on the cabinet. The operation panel includes an operation button, which is connected to the controller and is used to control the switch of the solenoid valve group.

7. The hydraulic fracturing operation platform according to claim 6, characterized in that: The operation panel includes a display screen, which is electrically connected to the controller and is used to display data.

8. The hydraulic fracturing operation platform according to any one of claims 1 to 5, characterized in that: The branch pipeline group adopts pressure-resistant pipes.

9. The hydraulic fracturing operation platform according to any one of claims 1 to 5, characterized in that: The branch pipeline group and the first pipeline are provided with connectors.

10. A hydraulic fracturing test system, characterized in that: It comprises a hydraulic fracturing stress device, a water pump and a hydraulic fracturing operating platform as claimed in any one of claims 1 to 9; The water pump is connected to the first pipeline, and the hydraulic fracturing stress device is connected to the branch pipeline group.

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