Gas testing and producing device for shale gas well

Abstract

The utility model discloses a shale gas well gas testing and producing device which comprises a bottom plate, a fixing structure, a first gas pump, a gas producing pipe, a filtering assembly, a gas testing assembly, a combustion cylinder, a gas collecting tank and a clamping structure. The four corners of the bottom plate are connected with fixing structures, one side of the upper end of the bottom plate is fixedly connected with a first air pump, one end of the first air pump is fixedly connected with an air collecting pipe, the other end of the first air pump is in pipeline connection with a filtering assembly, the other end of the filtering assembly is in pipeline connection with a gas testing assembly, and one end of the gas testing assembly is in pipeline connection with a combustion cylinder. One end of the gas testing assembly is connected with two gas collecting tanks through a pipeline, one side of each gas collecting tank is connected with a clamping structure, and a recycling box and a second gas pump are arranged on the two sides of the combustion cylinder. Compared with the prior art, the shale gas testing device has the advantages that the concentration of shale gas during gas testing can be improved, the gas collecting tank can be conveniently replaced, and leaked gas can be recycled.

Description

Technical Field

[0001] The utility model relates to the field of shale gas collection, in particular to a shale gas well gas testing and collection device. Background Art

[0002] Shale gas is a natural gas resource that can be mined in shale layers. China has a large amount of recoverable shale gas reserves. Shale gas is mainly composed of methane and is a clean and efficient energy resource and chemical raw material. Before shale gas is officially put into use, in order to further understand the underground shale gas, it is necessary to conduct gas extraction and testing on the shale gas.

[0003] The patent number CN212722753U in the prior art discloses a shale gas well test gas production wellhead device, including a processing box, a heating box is fixedly installed on the bottom wall of the inner cavity of the processing box, an air intake pipe is fixedly installed on the left side of the heating box, and a fan is fixedly installed inside the air intake pipe. The shale gas well test gas production wellhead device is placed at the wellhead where gas production is required through the air intake pipe. Through the operation of the fan, the gas follows the air intake pipe to reach the inside of the heating box. Through the operation of the hot air machine, the generated hot gas passes through the hot air pipe to reach the inside of the drainage pipe, and is drained through the air outlet holes on the drainage pipe to increase the contact area with the gas production, increase its temperature, and perform preheating treatment, which is convenient for the later combustion treatment. The heated gas will pass through the connecting pipe to the inside of the combustion box for combustion. At this time, the first valve is closed to prevent the gas from being discharged from the air outlet pipe, thereby achieving the purpose of high gas production efficiency.

[0004] However, the patents in the prior art have the following disadvantages:

[0005] (1) The existing technology does not have a gas pressurization device. If the concentration of shale gas is too low when it reaches the ground from the shale gas well, the shale gas may not be able to burn;

[0006] (2) The prior art does not have a device for collecting shale gas. Shale gas is discharged to a designated place through an outlet pipe. It is inconvenient to replace the tank after the tank is full of shale gas.

[0007] (3) The existing technology is not convenient to fix near the wellhead and cannot recover and process the leaked shale gas. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a shale gas well test gas production device which can not only improve the concentration of shale gas during the test, but also facilitate the replacement of gas collecting tanks and recover leaked gas.

[0009] In order to solve the above problems, the technical solution of the utility model is: a shale gas well gas testing and production device, including a bottom plate, a fixing structure, an air pump, a gas production pipe, a filter assembly, a gas testing assembly, a combustion tube, a gas collecting tank, and a clamping structure;

[0010] Preferably, the four corners of the base plate are connected to a fixed structure, one side of the upper end of the base plate is fixedly connected to an air pump, one end of the air pump is fixedly connected to a gas collection pipe, the other end of the air pump is connected to a filter assembly by a pipeline, the other end of the filter assembly is connected to a gas test assembly by a pipeline, one end of the gas test assembly is connected to a combustion tube by a pipeline, and one end of the gas test assembly is connected to a gas collecting tank by a pipeline. There are two gas collecting tanks, one side of which is connected to a clamping structure, and recovery boxes and air pump 2 are provided on both sides of the combustion tube.

[0011] Furthermore, the gas test assembly includes a gas test tank, a pressure detection gauge is provided on one side of the upper end of the gas test tank, a pressure release valve is provided on the other side of the upper end of the gas test tank, a telescopic rod is provided on the upper end of the gas test tank, and a piston is provided at the lower end of the telescopic rod located inside the gas test tank.

[0012] Furthermore, the clamping structure includes a frame, a screw is rotatably arranged inside the frame, the screw is a double-headed screw, the threads at both ends of the screw are opposite, clamps are symmetrically sleeved at both ends of the screw, the clamps are threadedly connected to the screw, and a motor is arranged at one end of the frame.

[0013] Furthermore, the filter assembly includes a filter box, a filter screen is slidably arranged inside the filter box, and a handle is arranged on the upper end of the filter screen.

[0014] Furthermore, a recovery pipe 1 is provided at one end of the combustion tube, and one end of the recovery pipe 1 is connected to a recovery box. A recovery pipe 2 is provided at one end of the air pump 2, and one end of the recovery pipe 2 is connected to the recovery box. A cooling water tank is provided at the outer end of the recovery pipe 1.

[0015] Furthermore, the fixing structure includes a bolt, a turntable is provided at the upper end of the bolt, and a ground plug is provided at the lower end of the turntable.

[0016] The advantages of the utility model compared with the existing technology are:

[0017] (1) The telescopic rod of the utility model can adjust the position of the piston, which can increase the concentration of shale gas inside the test tank. The internal air pressure of the test tank can be observed through the pressure detection gauge, and the internal pressure of the test tank can be prevented from being too high by installing a pressure release valve;

[0018] (2) When the gas collecting tank is full of gas, the motor drives the screw to rotate, so that the clamping plate is away from the gas collecting tank, and a new gas collecting tank can be replaced. The motor is started to drive the screw to rotate in the opposite direction, so that the clamping plate clamps the new gas collecting tank to continue collecting gas;

[0019] (3) In the utility model, the excess gas from the gas test enters the recovery box through the recovery pipe 1 and is collected to avoid entering the air. The recovery pipe 1 is cooled by the cooling water tank to reduce the temperature of the shale gas. The air pump 2 sucks air through the recovery pipe 2 to collect the leaked gas inside the recovery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a three-dimensional gas production device for shale gas well testing Figure 1 .

[0021] Figure 2 The utility model is a three-dimensional gas production device for shale gas well testing Figure 2 .

[0022] Figure 3 The utility model discloses a gas testing component structure diagram of a shale gas well gas testing and production device.

[0023] Figure 4 The utility model discloses a clamping structure diagram of a shale gas well gas testing and production device.

[0024] As shown in the figure: 1. Base plate; 2. Fixed structure; 3. Air pump 1; 4. Gas collection pipe; 5. Filter assembly; 6. Gas test assembly; 7. Combustion tube; 8. Recovery box; 9. Gas collecting tank; 10. Air pump 2; 11. Clamping structure; 12. Gas test tank; 13. Pressure detection gauge; 14. Air pressure release valve; 15. Telescopic rod; 16. Piston; 17. Frame; 18. Screw; 19. Clamp; 20. Motor; 21. Filter box; 22. Filter; 23. Handle; 24. Recovery pipe 1; 25. Recovery pipe 2; 26. Cooling water tank; 27. Bolt; 28. Turntable; 29. ​​Ground plug. DETAILED DESCRIPTION

[0025] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0026] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0027] In order to make the contents of the present invention more clearly understood, the technical solutions 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.

[0028] like Figures 1 to 4As shown, a shale gas well test gas production device includes a base plate 1, and fixed structures 2 are installed at the four corners of the base plate 1 to facilitate the installation of the device at the shale gas wellhead. The fixed structure 2 includes bolts 27, and the bolts 27 are threadedly connected to the base plate 1. A turntable 28 is installed on the upper end of the bolt 27 to facilitate the rotation of the bolt. A ground plug 29 is installed at the lower end of the turntable 28, which can be inserted into the soil for fixation.

[0029] An air pump 3 is fixedly installed on one side of the upper end of the base plate 1, and a gas production pipe 4 is installed at one end of the air pump 3. The gas production pipe 4 goes deep into the well to collect shale gas. The other end of the air pump 3 is connected to the filter component 5. The shale gas is filtered through the filter component 5 to prevent impurities in the gas from circulating. The filter component 5 includes a filter box 21, which is installed on the upper end of the base plate 1. A slidable filter screen 22 is installed inside the filter box 21. A handle 23 is installed on the upper end of the filter screen 22. The handle 23 can be used to easily pull out the filter screen 22, so that the filter screen 22 can be cleaned.

[0030] The other end of the filter component 5 is connected to the gas test component 6 through a pipeline. The collected shale gas is tested and burned by the gas test component 6 to ensure the quality of the shale gas. The gas test component 6 includes a gas test tank 12, which is installed on the upper end of the base plate 1. A telescopic rod 15 is installed on the upper end of the gas test tank 12. The lower end of the telescopic rod 15 is located inside the gas test tank 12 and a piston 16 is installed. The telescopic rod 15 adjusts the position of the piston 16 to increase the concentration of shale gas inside the gas test tank 12. A pressure detection gauge 13 is installed on one side of the upper end of the gas test tank 12, and an air pressure release valve 14 is installed on the other side of the upper end of the gas test tank 12. The internal air pressure of the gas test tank 12 can be observed through the pressure detection gauge 13, and the internal pressure of the gas test tank 12 can be prevented from being too high by installing the air pressure release valve 14.

[0031] One end of the gas test component 6 is connected to the combustion tube 7 by a pipeline. The combustion tube 7 is used for gas test detection of shale gas. A recovery pipe 24 is installed at one end of the combustion tube 7. One end of the recovery pipe 24 is connected to the recovery box 8. Excess shale gas enters the recovery box 8 through the recovery pipe 24 and is collected to avoid diffusing into the air. A cooling water tank 26 is installed at the outer end of the recovery pipe 24 to cool the shale gas inside the combustion tube 7.

[0032] A pipe at one end of the gas testing assembly 6 is connected to a gas collecting tank 9. There are two gas collecting tanks 9. The pipes connected to the gas collecting tanks 9 are threadedly connected to the gas collecting tanks 9. When one of the gas collecting tanks 9 is full of shale gas, the pipe is removed and the gas collecting tank 9 is sealed so that it can be transported and transferred. The leaked gas is collected in the recovery box 8 through the recovery pipe 25 by suction through the air pump 10.

[0033] One side of the gas collecting tank 9 is connected to a clamping structure 11, which can fix the gas collecting tank 9. The clamping structure 11 includes a frame 17, and a rotatable screw 18 is installed inside the frame 17. The screw 18 is a double-headed screw, and the threads at both ends of the screw 18 are opposite. Clamps 19 are symmetrically mounted on both ends of the screw 18. The clamps 19 are threadedly connected to the screw 18. The size of the clamps 19 matches the frame 17, so that when the screw 18 rotates, the clamps 19 can clamp the gas collecting tank 9. A motor 20 is installed at one end of the frame 17, and the output end of the motor 20 is connected to the screw 18, and the motor 20 drives the screw 18 to rotate.

[0034] In the above structure, valves are installed on the pipelines to control the opening and closing of the pipelines.

[0035] When in use, the bottom plate 1 is placed near the shale gas wellhead, the turntable 28 is rotated to drive the bolt 27 to rotate, so that the bolt 27 drives the ground plug 29 to insert into the ground to fix the bottom plate 1, and the gas production pipe 4 is inserted into the well to collect shale gas. The shale gas is filtered through the filter screen 22 to remove impurities, and the shale gas enters the inside of the gas test tank 12 and is tested through the combustion tube 7. The telescopic rod 15 is extended to drive the piston 16 to move downward, which can increase the concentration of shale gas and avoid inaccurate shale gas testing. The excess gas from the test is collected in the recovery box 8 through the recovery pipe 24 to avoid entering the air. During the gas test, the recovery pipe 24 is cooled by a cooling water tank to reduce the temperature of the shale gas. After the gas test, the shale gas is collected. The shale gas enters the gas collecting tank 9 through the pipeline. When the gas collecting tank 9 is full, the pipeline is removed and the gas collecting tank 9 is avoided. The air pump 10 sucks air through the recovery pipe 25 to collect the leaked gas in the recovery box 8. The motor 20 is started to drive the screw 18 to rotate, so that the clamp 19 is away from the gas collecting tank 9, so that a new gas collecting tank 9 can be replaced, and the motor 20 is started again to drive the screw 18 to rotate in the opposite direction, so that the clamp 19 clamps the new gas collecting tank 9 to continue collecting.

[0036] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A shale gas well gas testing and production device, characterized in that: It comprises a base plate (1), a fixing structure (2), an air pump (3), a gas collection pipe (4), a filter assembly (5), a gas test assembly (6), a combustion tube (7), a gas collecting tank (9), and a clamping structure (11); The four corners of the bottom plate (1) are connected to a fixed structure (2); one side of the upper end of the bottom plate (1) is fixedly connected to an air pump (3); one end of the air pump (3) is fixedly connected to a gas collection pipe (4); the other end of the air pump (3) is connected to a filter assembly (5); the other end of the filter assembly (5) is connected to a gas test assembly (6); one end of the gas test assembly (6) is connected to a combustion tube (7); one end of the gas test assembly (6) is connected to a gas collecting tank (9); there are two gas collecting tanks (9); one side of the gas collecting tank (9) is connected to a clamping structure (11); recovery boxes (8) and air pumps (10) are provided on both sides of the combustion tube (7).

2. A shale gas well gas testing and production device according to claim 1, characterized in that: The gas test assembly (6) comprises a gas test tank (12), a pressure detection gauge (13) is provided on one side of the upper end of the gas test tank (12), a pressure release valve (14) is provided on the other side of the upper end of the gas test tank (12), a telescopic rod (15) is provided on the upper end of the gas test tank (12), and a piston (16) is provided at the lower end of the telescopic rod (15) located inside the gas test tank (12).

3. A shale gas well gas testing and production device according to claim 1, characterized in that: The clamping structure (11) comprises a frame (17), a screw (18) is rotatably arranged inside the frame (17), the screw (18) is a double-headed screw, the threads at both ends of the screw (18) are in opposite directions, clamping plates (19) are symmetrically sleeved at both ends of the screw (18), the clamping plates (19) are threadedly connected to the screw (18), and a motor (20) is arranged at one end of the frame (17).

4. A shale gas well gas testing and production device according to claim 1, characterized in that: The filter assembly (5) comprises a filter box (21), a filter screen (22) is slidably arranged inside the filter box (21), and a handle (23) is arranged at the upper end of the filter screen (22).

5. A shale gas well gas testing and production device according to claim 1, characterized in that: A recovery pipe (24) is provided at one end of the combustion tube (7), and one end of the recovery pipe (24) is connected to a recovery box (8). A recovery pipe (25) is provided at one end of the air pump (10), and one end of the recovery pipe (25) is connected to the recovery box (8). A cooling water tank (26) is provided at the outer end of the recovery pipe (24).

6. A shale gas well gas testing and production device according to claim 1, characterized in that: The fixing structure (2) comprises a bolt (27), a rotating disk (28) is provided at the upper end of the bolt (27), and a ground plug (29) is provided at the lower end of the rotating disk (28).

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