Bendable gas well drainage gas recovery plunger

Abstract

The utility model relates to the field of gas well exploitation, and discloses a bendable gas well drainage and gas recovery plunger which comprises a fishing head, a plurality of plunger sections are arranged on the lower portion of the fishing head, each plunger section comprises a connecting piece and a fixing piece, a column tail is arranged at the bottom of the connecting piece located on the lowest portion, and the bottom of the connecting piece located on the lowest portion is connected with the fixing piece. Fastening pads are arranged between the connecting piece and the fixing piece and between the connecting piece and the column tail, the connecting piece comprises a connecting block, a rotating ball is fixedly connected to the top of the connecting block, the fixing piece comprises a fixing block, a rotating groove is formed in the bottom of the fixing block, and the rotating ball is rotationally connected with the rotating groove; a connecting groove is formed in the lower portion of the fishing head. According to the utility model, through the mutual matching among the rotating ball, the rotating groove and the connecting groove, the connecting piece can drive the plunger sections to adjust the angle, so that the fishing head, the plunger sections and the column tail can be bent to adapt to the use requirements of different gas wells, and the fishing tool is more practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to the gas well exploitation field especially, relates to a kind of bendable gas well drainage gas recovery plunger. BACKGROUND

[0002] With the sustained development of gas field, part of gas well has entered the middle and later stage of low pressure and low yield, resulting in single well production reduction and poor liquid carrying capacity, at this time, wellbore fluid accumulation gradually increases, seriously affect the production of gas well, drainage gas recovery is an effective measure to solve gas well fluid accumulation problem, and is an important means to tap the production potential of water-producing gas well and improve recovery efficiency.

[0003] Some conventional plungers of the prior art cannot bend because their outer part is usually made of an integral shell, which is relatively solid, so they cannot adapt to horizontal wells and highly deviated wells, which are gradually increasing in number with the development of gas fields. SUMMARY

[0004] To overcome the above problems, the utility model provides a bendable gas well drainage gas recovery plunger, which can improve the adaptability of conventional plungers to horizontal wells and highly deviated wells.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a bendable gas well drainage gas recovery plunger, comprising a fishing head, the lower part of the fishing head is provided with a plurality of plunger segments, the plunger segment comprises a connecting piece and a fixing piece, the bottom of the connecting piece at the lowermost part is provided with a plunger tail, the connecting piece and the fixing piece are provided with a fastening pad therebetween, the connecting piece comprises a connecting block, the top of the connecting block is fixedly connected with a rotating ball, the fixing piece comprises a fixing block, the bottom of the fixing block is provided with a rotating groove, and the rotating ball and the rotating groove are rotatably connected.

[0006] Further description of the above technical scheme:

[0007] The lower part of the retrieval head is provided with a connecting groove, and the ball bearing of the uppermost connector is rotatably connected to the connecting groove.

[0008] As a further description of the above technical solution:

[0009] The connecting block is externally fixedly connected to a No. 1 ring.

[0010] As a further description of the above technical solution:

[0011] The bottom of the connecting block is provided with a fixing groove, and a first anti-loosening ring is fixedly connected to the bottom of the connecting block.

[0012] As a further description of the above technical solution:

[0013] The fixing block is externally fixedly connected with a second ring.

[0014] As a further description of the above technical solution:

[0015] The top surface of the fixing block is fixedly connected with a second anti-loosening ring, and the top of the fixing block is fixedly connected with a stud, which is threadedly connected to the fixing groove.

[0016] As a further description of the above technical solution:

[0017] The upper and lower parts of the fastening pad are provided with anti-loosening ridges.

[0018] As a further description of the above technical solution:

[0019] A fixing rod is fixedly connected to the top of the column tail, and the fixing rod is threadedly connected to the fixing groove of the connector located at the bottom. A third anti-loosening ring is fixedly connected to the top of the column tail.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by setting the mutual cooperation between the rotating ball, the rotating groove and the connecting groove, the connecting part can drive the plunger section to adjust the angle, so that the fishing head and multiple plunger sections and the tail of the plunger can be bent to adapt to the usage requirements of different gas wells, making it more practical.

[0022] 2. In this utility model, by setting up connecting parts and fixing parts, as well as the mutual cooperation between the retrieval head and the tail of the plunger, the weight of the plunger can be adjusted according to actual needs. By setting up the mutual cooperation between the stud, the fixing rod and the fixing groove, the weight adjustment of the plunger is more convenient, faster and more practical. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall three-dimensional structure of a flexible gas well drainage and gas extraction plunger proposed in this utility model.

[0024] Figure 2 This is a three-dimensional structural diagram of a flexible gas well drainage and gas extraction plunger proposed in this utility model.

[0025] Figure 3 This is a three-dimensional structural diagram of the lower side of the retrieval head of a flexible gas well drainage and gas production plunger proposed in this utility model.

[0026] Figure 4 This is a three-dimensional structural diagram of the plunger segment of a flexible gas well drainage and gas extraction plunger proposed in this utility model.

[0027] Figure 5 This is a three-dimensional structural diagram of the lower side of the connector of a flexible gas well drainage and gas extraction plunger proposed in this utility model.

[0028] Figure 6 This is a three-dimensional structural diagram of the lower side of the fixing component of a flexible gas well drainage and gas extraction plunger proposed in this utility model.

[0029] Legend: 1. Retrieval head; 2. Connector; 3. Fixing component; 4. Fastening pad; 5. Column tail; 21. Connecting block; 22. Rotating ball; 23. Ring No. 1; 24. First anti-loosening ring; 25. Fixing groove; 31. Fixing block; 32. Stud; 33. Second ring; 34. Second anti-loosening ring; 35. Rotating groove; 11. Connecting groove; 41. Anti-loosening ridge; 51. Third anti-loosening ring; 52. Fixing rod. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 - Figure 3This utility model provides an embodiment of a flexible gas well drainage and gas production plunger, including a retrieval head 1 for connecting various components. The lower part of the retrieval head 1 has a connecting groove 11 for connecting with plunger sections. The uppermost connecting member 2 has a rotating ball 22 rotatably connected to the connecting groove 11 to facilitate the bending of the plunger. The lower part of the retrieval head 1 has multiple plunger sections. The number of plunger sections can be increased or decreased according to actual gravity requirements, and plunger sections of different materials and weights can be replaced as needed. Each plunger section includes a connecting member 2 and a fixing member 3. The bottom of the lower connector 2 is provided with a post tail 5, which is used to form a plunger for gas well drainage and gas production with the retrieval head 1 and the plunger section. Fastening pads 4 are provided between the connector 2 and the fixing part 3 and between the connector 2 and the post tail 5. These pads can be made of rubber or metal and are used to cooperate with the first anti-loosening ring 24, the second anti-loosening ring 34 and the third anti-loosening ring 51 to ensure the threaded connection is firm and prevent the connection from loosening. The upper and lower parts of the fastening pads 4 are provided with anti-loosening ridges 41, which are used to cooperate with the connection of the first anti-loosening ring 24, the second anti-loosening ring 34 and the third anti-loosening ring 51.

[0032] like Figure 4 - Figure 5 As shown, the connector 2 includes a connector block 21, which is used to connect various components. A rotating ball 22 is fixedly connected to the top of the connector block 21, which is used to cooperate with the connector groove 11 or the rotating groove 35 to cooperate with the rotation and angle adjustment of each plunger section to cooperate with the bending of the plunger. A ring 23 is fixedly connected to the outside of the connector block 21, which is used to cooperate with the drainage and gas sampling operation. A fixing groove 25 is opened at the bottom of the connector block 21, which is used to cooperate with the connection of the stud 32 or the fixing rod 52. A first anti-loosening ring 24 is fixedly connected to the bottom of the connector block 21, and the bottom of the ring has raised textures for cooperating with the fastening pad 4.

[0033] Please see Figure 6 The fixing component 3 includes a fixing block 31. The bottom of the fixing block 31 has a rotating groove 35. The rotating ball 22 is rotatably connected to the rotating groove 35 to cooperate with the bending of the plunger. The outside of the fixing block 31 is fixedly connected to a second ring 33, which is the same size as the first ring 23. The top surface of the fixing block 31 is fixedly connected to a second anti-loosening ring 34, which is used to cooperate with the fastening pad 4. The top of the fixing block 31 is fixedly connected to a stud 32, which is used to cooperate with the connection between each plunger segment. The stud 32 is threadedly connected to the fixing groove 25.

[0034] like Figure 2 As shown, a fixing rod 52 is fixedly connected to the top of the column tail 5, which is used to connect the column tail 5 and the plunger section. The fixing rod 52 is threadedly connected to the fixing groove 25 of the connector 2 located at the bottom. A third anti-loosening ring 51 is fixedly connected to the top of the column tail 5, which is used to cooperate with the fastening pad 4.

[0035] Working principle: During use, select the appropriate material and number of plunger segments according to actual needs, and then connect multiple plunger segments sequentially. During connection, first tighten the threaded stud 32 on the upper part of the fixing part 3 on the first plunger segment to the fixing groove 25 on the lower part of the connecting part 2 that connects to the retrieval head 1. When installing the fixing part 3 and the connecting part 2, a fastening washer 4 needs to be placed between the connecting part 2 and the fixing part 3. When the fixing part 3 is tightened to the connecting part 2 via the stud 32, the first anti-loosening ring 24 at the lower part of the connecting block 21 and the second anti-loosening ring 34 on the upper part of the fixing part 3 will abut against the fastening washer 4. The protrusions on the first anti-loosening ring 24 and the second anti-loosening ring 34 will lock against the anti-loosening protrusions 41 on the fastening washer 4, thereby improving the connection between the connecting part 2 and the fixing part 3. To ensure the stability of the connection between the fixed parts 3, and to prevent the connection between the connector 2 and the fixed part 3 from being affected when the plunger bends. The other plunger sections can be installed in sequence according to the above steps. After the last plunger section is installed, the plunger tail 5 is immediately connected to the connector 2 located at the last part. The fixing rod 52 on the plunger tail 5 is tightened to the fixing groove 25 on the last connector 2. The third anti-loosening ring 51 on the plunger tail 5 and the first anti-loosening ring 24 on the last connector 2 will press the fastening pad 4 between the connector 2 and the plunger tail 5 together, thereby improving the stability of the connection between the plunger tail 5 and the connector 2. When the plunger needs to bend, the rotating ball 22 on the connecting block 21 will rotate in the rotating groove 35 or the connecting groove 11, thereby adjusting the bending angle of each plunger section.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible gas well drainage and gas production plunger, comprising a retrieval head (1), characterized in that: The lower part of the retrieval head (1) is provided with multiple plunger sections. Each plunger section includes a connector (2) and a fixing member (3). The bottom of the connector (2) at the bottommost part is provided with a column tail (5). Fastening pads (4) are provided between the connector (2) and the fixing member (3) and between the connector (2) and the column tail (5). The connector (2) includes a connecting block (21). A rotating ball (22) is fixedly connected to the top of the connecting block (21). The fixing member (3) includes a fixing block (31). A rotating groove (35) is opened at the bottom of the fixing block (31). The rotating ball (22) is rotatably connected to the rotating groove (35).

2. The flexible gas well drainage and gas production plunger according to claim 1, characterized in that: The lower part of the retrieval head (1) is provided with a connecting groove (11), and the ball bearing (22) of the uppermost connector (2) is rotatably connected to the connecting groove (11).

3. The flexible gas well drainage and gas production plunger according to claim 1, characterized in that: The connecting block (21) is externally fixedly connected to a ring (23).

4. The flexible gas well drainage and gas production plunger according to claim 1, characterized in that: The bottom of the connecting block (21) is provided with a fixing groove (25), and the bottom of the connecting block (21) is fixedly connected with a first anti-loosening ring (24).

5. A flexible gas well drainage and gas production plunger according to claim 1, characterized in that: The fixing block (31) is externally fixedly connected to a second ring (33).

6. A flexible gas well drainage and gas production plunger according to claim 4, characterized in that: The top surface of the fixing block (31) is fixedly connected with a second anti-loosening ring (34), and the top of the fixing block (31) is fixedly connected with a stud (32), which is threadedly connected to the fixing groove (25).

7. A flexible gas well drainage and gas production plunger according to claim 1, characterized in that: The upper and lower parts of the fastening pad (4) are provided with anti-loosening ridges (41).

8. A flexible gas well drainage and gas production plunger according to claim 4, characterized in that: A fixing rod (52) is fixedly connected to the top of the column tail (5). The fixing rod (52) is threadedly connected to the fixing groove (25) of the connector (2) located at the bottom. A third anti-loosening ring (51) is fixedly connected to the top of the column tail (5).

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