Wellhead pressurizing drainage gas recovery device for gas field

Abstract

The utility model belongs to the technical field of wellhead pressurization drainage gas production for gas fields, and discloses a wellhead pressurization drainage gas production device for gas fields, which comprises a gas production pipeline, a collection pipe is arranged in the gas production pipeline in a sliding manner, and the two sides of the top end of the collection pipe further comprise clamping jaw assemblies; the clamping jaw assembly comprises a fixing block fixedly arranged at the edge position of the collecting pipe, a micro motor is fixedly arranged in the fixing block, a rotating wheel is fixedly arranged at the tail end of a main shaft of the micro motor, an inserting plate is rotationally arranged in the rotating wheel, and a buffering assembly is further arranged on the periphery of the top end of the collecting pipe; a rotating wheel and an inserting plate structure in the clamping jaw assembly can be used for driving the rotating wheel to rotate by a micro motor and controlling the inserting plate structure to tightly grasp on the inner wall of the gas production pipeline and pull up the collecting pipe to lift out from the interior of the gas production pipeline when the lifting of the collecting pipe in the gas production pipeline is blocked, so that the risk that the collecting pipe is blocked in the gas production pipeline is reduced; and subsequent recovery is convenient and fast.

Description

Technical Field

[0001] The utility model belongs to the technical field of wellhead pressurized drainage gas production for gas fields, and specifically relates to a wellhead pressurized drainage gas production device for gas fields. Background Technique

[0002] The main purpose of wellhead pressurized drainage gas production is to improve the liquid-carrying capacity of gas wells, accelerate the gas production speed of the movable reserves of gas wells, and thus increase the gas production of gas wells by reducing the wellhead pressure.

[0003] At the same time, a plunger gas lift drainage gas production device with the application number CN202322357833.0, "including an oil well collection pipe, the upper end of the oil well collection pipe is connected with a blowout prevention component, the blowout prevention component includes a blowout prevention pipe, the blowout prevention pipe is fixedly connected with the oil well collection pipe through a connecting flange, and a lifting gas plunger is arranged inside the blowout prevention pipe"; during the use of the above-mentioned plunger gas lift drainage gas production device, the plunger structure is lifted from the inside of the pipeline. Since the gas production inside the pipeline drives some residues to remain on the inner wall of the pipeline, affecting the flatness of the pipeline, when the plunger structure is lifted, it is easy to contact the residues, the lifting speed slows down, and the collection pipe is easily stuck inside the pipeline, resulting in difficulties in subsequent recovery.

[0004] Therefore, in view of the above problems, a wellhead pressurized drainage gas production device for gas fields is proposed. Content of the Utility Model

[0005] To solve the problems raised in the above background technique, the utility model provides a wellhead pressurized drainage gas production device for gas fields, which has the advantage that when the collection pipe is lifted inside the gas production pipeline, an external lifting force is provided through the claw assembly structure to push and squeeze the residues on the collection pipe for recovery.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A wellhead pressurized drainage gas production device for gas fields, including a gas production pipeline, a collection pipe is slidably arranged inside the gas production pipeline, and claw assemblies are further included on both sides of the top end of the collection pipe;

[0007] The claw assembly includes a fixed block fixedly arranged at the edge position of the collection pipe, a micro motor is fixedly arranged inside the fixed block, a rotating wheel is fixedly arranged at the end of the main shaft of the micro motor, a plug board is rotatably arranged inside the rotating wheel, and buffer assemblies are further included around the top end of the collection pipe;

[0008] The buffer assembly includes positioning blocks fixedly arranged around the top end of the collection pipe, and columns close to the inner wall of the gas production pipeline are further included above the positioning blocks.

[0009] Preferably, a damper fixed to the rotating wheel is attached to one side of the plug board inside the rotating wheel.

[0010] Preferably, a baffle fixed to the rotating wheel is attached to the other side of the plug board.

[0011] Preferably, a first spring fitting the plug board is sleeved outside the damper.

[0012] Preferably, a first pulley fitting the inner wall of the gas collection pipeline is rotatably arranged at the bottom end of the plug board.

[0013] Preferably, a bolt head screwed with the positioning block is fixedly arranged at the bottom end of the column.

[0014] Preferably, a connecting rod passes through and slides through the top end of the column. A buffer head is fixedly arranged at the top end of the connecting rod. A second spring is sleeved outside the connecting rod between the column and the buffer head.

[0015] Preferably, a second pulley close to the inner wall of the gas collection pipeline is rotatably arranged outside the column.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. Through the rotating wheel and plug board structure in the claw assembly of the present utility model, when the lifting of the collection pipe inside the gas collection pipeline is blocked, the rotating wheel can be driven by the micro motor to rotate, controlling the plug board structure to grip tightly on the inner wall of the gas collection pipeline, and pulling up the collection pipe to lift and extract it from the inside of the gas collection pipeline, so as to reduce the risk of the collection pipe being blocked inside the gas collection pipeline, making it difficult to lift, and facilitating subsequent recovery.

[0018] 2. Through the column and buffer head structure of the present utility model, combined with the second spring structure sleeved outside the column at the bottom end of the buffer head, when contacting the upper structure, the buffer effect provided by the second spring can be used to avoid direct impact and cause greater damage to the collection pipe. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is of the present utility model Figure 1 schematic diagram of the structure at A;

[0021] Figure 3 is a schematic diagram of the installation structure of the claw assembly of the present utility model;

[0022] Figure 4 is a schematic diagram of the sectional structure of the rotating wheel of the present utility model;

[0023] Figure 5 is a schematic diagram of the installation structure of the column of the present utility model.

[0024] In the figure: 1. Gas extraction pipeline; 2. Collection pipe;

[0025] 3. Claw assembly; 31. Fixed block; 32. Micro motor; 33. Rotating wheel; 34. Insert plate; 35. Baffle; 36. Pulley 1; 37. Damper; 38. Spring 1;

[0026] 4. Positioning block; 5. Bolt head; 6. Column; 7. Buffer head; 8. Connecting rod; 9. Spring 2; 10. Pulley 2. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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.

[0028] As Figures 1 to 5 shown, the present invention provides a wellhead pressurization drainage gas extraction device for gas fields, including a gas extraction pipeline 1. A collection pipe 2 is slidably arranged inside the gas extraction pipeline 1 for exhaust gas collection operation. On both sides of the top end of the collection pipe 2, there is also a claw assembly 3;

[0029] The claw assembly 3 includes a fixed block 31 fixedly arranged at the edge position of the collection pipe 2. A micro motor 32 is fixedly arranged inside the fixed block 31. The end of the main shaft of the micro motor 32 is fixedly provided with a rotating wheel 33. An insert plate 34 is rotatably arranged inside the rotating wheel 33. The micro motor 32 drives the rotating wheel 33 and the insert plate 34 inside to rotate. The ratchet-like structure design can provide an upward grasping force during the process of passing through the inner wall of the gas extraction pipeline 1. Around the top end of the collection pipe 2, there is also a buffer assembly;

[0030] The buffer assembly includes a positioning block 4 fixedly arranged around the top end of the collection pipe 2. Above the positioning block 4, there is also a column 6 close to the inner wall of the gas extraction pipeline 1. The column 6 is installed above the positioning block 4 to form a support structure.

[0031] Specifically, on one side of the insert plate 34 located inside the rotating wheel 33, there is a damper 37 fixed to the rotating wheel 33 in a fitting manner. On the other side of the insert plate 34, there is a baffle 35 fixed to the rotating wheel 33 in a fitting manner. The baffle 35 limits the rotation of the insert plate 34 to prevent the insert plate 34 from rotating and deflecting too much, resulting in being stuck inside the gas extraction pipeline 1. A spring 1 38 fitting the insert plate 34 is sleeved outside the damper 37. At the bottom end of the insert plate 34, there is a pulley 1 36 rotatably arranged and fitting the inner wall of the gas extraction pipeline 1. The pulley 1 36 structure can reduce the friction between the insert plate 34 and the inside of the gas extraction pipeline 1.

[0032] At the bottom end of the vertical column 6, a bolt head 5 spirally arranged with the positioning block 4 is fixedly provided. The vertical column 6 is quickly installed through the bolt head 5. A connecting rod 8 penetrates and slides through the top end of the vertical column 6. A buffer head 7 is fixedly provided at the top end of the connecting rod 8. A second spring 9 is sleeved on the outer side of the connecting rod 8 between the vertical column 6 and the buffer head 7. The second spring 9 is located between the buffer head 7 and the vertical column 6. The elastic force provided by compression can support the buffer head 7 and reduce the impact force. A second pulley 10 close to the inner wall of the gas collection pipeline 1 is rotatably provided on the outer side of the vertical column 6. The vertical column 6 reduces the friction with the inner wall of the gas collection pipeline 1 through the second pulley 10, slides quickly, and avoids jamming.

[0033] Among them, the gas collection pipeline 1, the collection pipe 2, and the micro-motor 32 are prior arts and will not be elaborated; at the same time, the present utility model also includes a power source, a controller, a switch, etc., which are not the main technical points of this patent and will not be elaborated. The wiring diagram of the motor in the present utility model belongs to the common knowledge in the field. Its working principle is a known technology. Its model is selected according to actual use. Therefore, the control method and wiring layout of the motor will not be explained in detail.

[0034] Working principle and process:

[0035] Put the collection pipe 2 into the interior of the gas collection pipeline 1 and increase the pressure through a negative pressure method to collect the natural gas in the gas field. After the collection of natural gas is completed, when the collection pipe 2 is lifted and recovered from the interior of the gas collection pipeline 1, if the collection pipe 2 contacts the residue on the inner wall of the gas collection pipeline 1 and the collection pipe 2 is lifted slowly, the claw assembly 3 can be controlled to work. The micro-motor 32 drives the rotating wheel 33 inside the fixed block 31 to rotate. The rotating wheel 33 rotates in a counterclockwise direction. When the insertion plate 34 inside the rotating wheel 33 passes through the fixed block 31 and reaches the position of the inner wall of the gas collection pipeline 1, it can be pushed by the spring 38 outside the damper 37 that fits with the insertion plate 34 structure, and the insertion plate 34 is controlled to press tightly against the surface of the baffle 35. Through the contact of the first pulley 36 structure with the inner wall of the gas collection pipeline 1, contact positioning is carried out. The rotating wheel 33 continues to rotate and needs a moving space to drive the collection pipe 2 to lift, providing an upward pulling force. After the insertion plate 34 passes through the inner wall of the gas collection pipeline 1, it continues to rotate to provide intermittent upward power for the collection pipe 2, so as to quickly lift it and reduce the risk of the collection pipe 2 being stuck on the inner wall of the gas collection pipeline 1.

[0036] Meanwhile, during the operation of lifting the sampling tube 2, after the column 6 is pre-set and installed on the top of the positioning block 4 with the bolt head 5 and fixed, the sampling tube 2 is pulled up to the plunger impact position point. It can contact through the buffer head 7 at the top of the connecting rod 8 at the top of the column 6, push the connecting rod 8 to slide and insert into the inside of the column 6, and squeeze the second spring 9 outside the column 6 to deform for buffering, thus effectively achieving a buffering effect and reducing the impact damage received by the sampling tube 2. The second pulley 10 outside the column 6 fits on the inner wall of the gas sampling pipeline 1, effectively reducing friction and preventing the inner wall of the gas sampling pipeline 1 from being scratched during the movement of the column 6.

[0037] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The wellhead pressurized drainage gas production device for gas fields, comprising a gas production pipeline (1), characterized in that: Inside the gas collection pipeline (1), a collection pipe (2) is slidably arranged, and on both sides of the top end of the collection pipe (2), there are also claw assemblies (3); The claw assembly (3) includes a fixed block (31) fixedly arranged at the edge position of the collection pipe (2). Inside the fixed block (31), a micro motor (32) is fixedly arranged. At the end of the main shaft of the micro motor (32), a rotating wheel (33) is fixedly arranged. Inside the rotating wheel (33), a plug board (34) is rotatably arranged. Around the top end of the collection pipe (2), there is also a buffer assembly; The buffer assembly includes positioning blocks (4) fixedly arranged around the top end of the collection pipe (2), and above the positioning blocks (4), there are also columns (6) close to the inner wall of the gas collection pipeline (1).

2. The wellhead pressurized drainage gas production device for gas fields according to claim 1, wherein: On one side of the plug board (34) located inside the rotating wheel (33), a damper (37) fixed to the rotating wheel (33) is fitted.

3. The wellhead pressurization and drainage gas production device for gas fields according to claim 1, characterized in that: On the other side of the plug board (34), a baffle (35) fixed to the rotating wheel (33) is fitted.

4. The wellhead pressurization and drainage gas production device for gas fields according to claim 2, wherein: Outside the damper (37), a first spring (38) fitted to the plug board (34) is sleeved.

5. The wellhead pressurization and drainage gas production device for gas fields according to claim 1, characterized in that: At the bottom end of the plug board (34), a first pulley (36) in contact with the inner wall of the gas collection pipeline (1) is rotatably arranged.

6. The wellhead pressurization and drainage gas production device for gas fields according to claim 1, characterized in that: At the bottom end of the column (6), a bolt head (5) helically arranged with the positioning block (4) is fixedly arranged.

7. The wellhead boosting and drainage gas production device for gas fields according to claim 1, characterized in that: At the top end of the column (6), a connecting rod (8) passes through and slides. At the top end of the connecting rod (8), a buffer head (7) is fixedly arranged. Outside the connecting rod (8), a second spring (9) located between the column (6) and the buffer head (7) is sleeved.

8. The wellhead pressurization and drainage gas production device for gas fields according to claim 1, characterized in that: Outside the column (6), a second pulley (10) close to the inner wall of the gas collection pipeline (1) is rotatably arranged.

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