CN219327612U

CN219327612U - Coal bed gas horizontal well drags for sand and drags for buggy pump

Info

Publication number: CN219327612U
Application number: CN202320141761.3U
Authority: CN
Inventors: 郑延昭; 郑万斗; 张淑立
Original assignee: Qinshui County Jiayi Coalbed Methane Technology Service Co ltd
Current assignee: Qinshui County Jiayi Coalbed Methane Technology Service Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-07-11
Anticipated expiration: 2033-02-07

Abstract

The utility model provides a coal bed gas horizontal well bailing coal dust pump, which relates to the technical field of coal bed gas tools and comprises a pump barrel and a Chu Nabu, wherein the lower part of the pump barrel is connected with a storage part which is communicated with the pump barrel, a piston connecting pipe is movably inserted in the pump barrel, a piston is arranged below the piston connecting pipe, a travelling valve seat is arranged above the piston, a fixed plate is arranged below the piston connecting pipe, a valve spring is arranged in the middle position below the fixed plate, a travelling valve is connected below the valve spring, and water leakage holes are formed in two sides of the inside of the fixed plate; the piston and the travelling valve seat are hollow, and the hollow part is communicated with the storage part; according to the utility model, positive pressure is generated in the storage part connected with the pump cylinder along with the descending of the piston, when the positive pressure reaches a fixed value, the traveling valve is jacked up, and liquid in Chu Nabu enters the piston connecting pipe through the traveling valve, so that the liquid in the storage part is conveniently discharged, and the efficiency of the storage part for containing sand and coal dust is increased.

Description

Coal bed gas horizontal well drags for sand and drags for buggy pump

Technical Field

The utility model relates to the technical field of coalbed methane tools, in particular to a coalbed methane horizontal well bailing coal dust pump.

Background

The coalbed methane is a gas resource associated with coal, refers to hydrocarbon gas stored in the coalbed, takes methane as a main component, belongs to unconventional natural gas, and needs to carry out sand-fishing and coal-dust-fishing operation in a horizontal well in the coalbed methane exploitation process;

the horizontal well is a main well type for coal bed gas development, but quartz sand and pulverized coal which are returned and discharged in coal bed gas drainage and production cause great difficulty in drainage and production, sand and pulverized coal are generally removed through sand flushing and pulverized coal flushing operation in the traditional technology, the stratum disturbance of the horizontal well is greatly influenced, high-pressure water injection causes great harm to a channel near a shaft, the yield of the horizontal well is difficult to recover to an initial level, and a sand-pumping tool is adopted in the sand-pumping process, so that a large amount of water is easily collected, the sand-pumping and pulverized coal quantity is small, and the efficiency is influenced.

Disclosure of Invention

Aiming at the problems, the utility model provides the coal bed gas horizontal well bailing coal dust pump which is convenient for discharging liquid in the storage part and increasing the efficiency of the storage part for containing sand and coal dust.

In order to achieve the purpose of the utility model, the utility model is realized by the following technical scheme: the utility model provides a coal bed gas horizontal well drags for sand and drags for buggy pump, includes pump barrel and Chu Nabu, the below of pump barrel is connected and is stored the portion of receiving, and stores the portion and communicates with the pump barrel, the inside activity of pump barrel is inserted and is equipped with the piston connecting pipe, and the below of piston connecting pipe is equipped with the piston, the top of piston is equipped with the valve seat that moves about, the below of piston connecting pipe inside is equipped with the fixed plate, and the intermediate position department below the fixed plate is equipped with the valve spring, be connected with the valve that moves about under the valve spring, the both sides of the inside of fixed plate all are equipped with the hole that leaks;

the piston and the travelling valve seat are hollow, and the hollow part is communicated with the storage part.

The further improvement is that: the inside of piston is equipped with the through groove, the inside of travelling valve seat is equipped with the shutoff mouth, the through groove communicates with the shutoff mouth.

The further improvement is that: the diameter of the travelling valve is larger than that of the plugging port, and the travelling valve is used for plugging the plugging port.

The further improvement is that: the top of pump cylinder is equipped with the top and connects, and the inside both sides of top connect all are equipped with the breathing hole, the breathing hole with the inside intercommunication of pump cylinder.

The further improvement is that: the upper joint is provided with a movable joint, and the upper part of the outer side of the movable joint is provided with an elevator placing groove which is used for installing an elevator for lifting.

The further improvement is that: and a connecting pipe joint is arranged above the piston connecting pipe and used for connecting other piston connecting pipes.

The further improvement is that: the lower end of the pump cylinder is provided with a lower joint, and the pump cylinder is connected with the storage part through the lower joint.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the piston is driven to move upwards through the piston connecting pipe, the travelling valve is in a closed state, negative pressure is generated in the storage part connected with the pump cylinder, when the negative pressure reaches a certain value, the valve in Chu Nabu is sucked up, sand or coal dust and liquid in the well are sucked into the storage part, and simultaneously, along with the ascending of the piston, the piston connecting pipe, the piston and the liquid in the annular space of the pump cylinder are discharged out of the pump through the breathing hole; when the piston descends, the valve in Chu Nabu is reset to be in a closed state, positive pressure is generated in the storage part connected with the pump cylinder along with the descending of the piston, when the positive pressure reaches a certain value, the traveling valve is jacked, liquid in Chu Nabu enters the piston connecting pipe through the traveling valve, the liquid in the storage part is conveniently discharged, and the efficiency of the storage part for containing sand and coal dust is increased.

Drawings

FIG. 1 is a schematic view of the internal structure of the present utility model;

fig. 2 is a schematic view of a through slot and a closure of the present utility model.

Wherein: 1. a pump cylinder; 2. chu Nabu; 3. a piston connecting tube; 4. a piston; 5. a travelling valve seat; 6. a fixing plate; 7. a valve spring; 8. a traveling valve; 9. a water leakage hole; 10. a through groove; 11. sealing the opening; 12. an upper joint; 13. a breathing hole; 14. a movable joint; 15. an elevator mounting groove; 16. and a connecting pipe joint.

Detailed Description

The present utility model will be further described in detail with reference to the following examples, which are only for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Example 1

According to fig. 1 and 2, the embodiment provides a coal bed gas horizontal well bailing coal dust pump, which comprises a pump barrel 1 and a storage part 2, wherein the lower part of the pump barrel 1 is connected with Chu Nabu, the storage part 2 is communicated with the pump barrel 1, a piston connecting pipe 3 is movably inserted in the pump barrel 1, a piston 4 is arranged below the piston connecting pipe 3, a movable valve seat 5 is arranged above the piston 4, a fixed plate 6 is arranged below the inner part of the piston connecting pipe 3, a valve spring 7 is arranged in the middle position below the fixed plate 6, movable valves 8 are connected below the valve spring 7, and water leakage holes 9 are formed in two sides inside the fixed plate 6;

the piston 4 and the travelling valve seat 5 are hollow, and the hollow part is communicated with the storage part 2. The valve is arranged in Chu Nabu, when the pump is used, the piston 4 is driven to ascend through the piston connecting pipe 3, the traveling valve 8 is in a closed state, negative pressure is generated in the storage part 2 connected with the pump cylinder 1, when the negative pressure reaches a certain value, the valve in Chu Nabu is sucked up, sand or coal dust and liquid in a well are sucked into the storage part 2, and meanwhile, along with the ascending of the piston 4, the piston connecting pipe 3, the piston 4 and the liquid in the annular space of the pump cylinder 1 are discharged out of the pump through the breathing hole 13; when the piston 4 descends, the valve in the Chu Nabu is reset to be in a closed state, positive pressure is generated in the storage part 2 connected with the pump cylinder 1 along with the descending of the piston 4, when the positive pressure reaches a certain value, the traveling valve 8 is jacked up, liquid in the Chu Nabu 2 enters the piston connecting pipe 3 through the traveling valve, meanwhile, negative pressure is generated in the piston connecting pipe 3, the piston 4 and the annular space of the pump cylinder 1 along with the descending of the piston 4, liquid outside the pump is sucked into the pump through the breathing hole 13, and liquid in the storage part 2 is conveniently discharged.

The inside of the piston 4 is provided with a through groove 10, the inside of the traveling valve seat 5 is provided with a plugging port 11, and the through groove 10 is communicated with the plugging port 11. The diameter of the travelling valve 8 is larger than that of the plugging opening 11, and the travelling valve 8 is used for plugging the plugging opening 11. When in use, the sealing opening 11 can be sealed or opened by the traveling valve 8.

The upper part of the pump barrel 1 is provided with an upper joint 12, and both sides of the inside of the upper joint 12 are provided with breathing holes 13, and the breathing holes 13 are communicated with the inside of the pump barrel 1. When the pump is used, along with the ascending of the piston 4, liquid in the annular space of the piston connecting tube 3, the piston 4 and the pump cylinder 1 is discharged outside the pump through the breathing hole 13, and along with the descending of the piston 4, negative pressure is generated in the annular space of the piston connecting tube 3, the piston 4 and the pump cylinder 1, and the liquid outside the pump is sucked into the pump through the breathing hole 13.

Example two

The movable joint 14 is arranged above the upper joint 12, the elevator placing groove 15 is arranged above the outer side of the movable joint 14, and the elevator placing groove 15 is used for installing an elevator for lifting. And the lifting is convenient.

A pipe connecting joint 16 is arranged above the piston connecting pipe 3, and the pipe connecting joint 16 is used for connecting other piston connecting pipes 3. So as to connect a plurality of groups of piston connecting pipes 3 according to the depth of the horizontal well.

The lower end of the pump cylinder 1 is provided with a lower joint, and the pump cylinder 1 is connected with the storage part 2 through the lower joint. And the installation and the disassembly are convenient.

The coal bed gas horizontal well sand-fishing pulverized coal pump drives a piston 4 to ascend through a piston connecting pipe 3, a traveling valve 8 is in a closed state, negative pressure is generated in a storage part 2 connected with a pump barrel 1, when the negative pressure reaches a certain value, a valve in Chu Nabu is sucked up, sand or pulverized coal and liquid in a well are sucked into the storage part 2, and simultaneously, along with the ascending of the piston 4, the piston connecting pipe 3, the piston 4 and the liquid in an annular space of the pump barrel 1 are discharged out of the pump through a breathing hole 13; when the piston 4 descends, the valve in the Chu Nabu is reset to be in a closed state, positive pressure is generated in the storage part 2 connected with the pump cylinder 1 along with the descending of the piston 4, when the positive pressure reaches the fixed value of the valve spring 7, the traveling valve 8 is jacked, liquid in the Chu Nabu 2 enters the piston connecting pipe 3 through the traveling valve, negative pressure is generated in the annular space of the piston connecting pipe 3, the piston 4 and the pump cylinder 1 along with the descending of the piston 4, liquid outside the pump is sucked into the pump through the breathing hole 13, liquid in the storage part 2 is conveniently discharged, and the efficiency of the storage part 2 for containing sand and coal dust is increased.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a coal bed gas horizontal well drags for sand and drags for buggy pump, includes pump barrel (1) and storage portion (2), its characterized in that: the pump is characterized in that the storage part (2) is connected to the lower part of the pump cylinder (1), the storage part (2) is communicated with the pump cylinder (1), a piston connecting pipe (3) is movably inserted into the pump cylinder (1), a piston (4) is arranged below the piston connecting pipe (3), a traveling valve seat (5) is arranged above the piston (4), a fixed plate (6) is arranged below the inner part of the piston connecting pipe (3), a valve spring (7) is arranged at the middle position below the fixed plate (6), a traveling valve (8) is connected to the lower part of the valve spring (7), and water leakage holes (9) are formed in two sides of the inner part of the fixed plate (6);

the piston (4) and the travelling valve seat (5) are hollow, and the hollow part is communicated with the storage part (2).

2. The coal bed methane horizontal well bailing coal dust pump of claim 1, wherein: the inside of piston (4) is equipped with link up groove (10), the inside of travelling valve seat (5) is equipped with shutoff mouth (11), link up groove (10) and shutoff mouth (11) intercommunication.

3. The coal bed methane horizontal well bailing coal dust pump of claim 2, wherein: the diameter of the travelling valve (8) is larger than that of the plugging opening (11), and the travelling valve (8) is used for plugging the plugging opening (11).

4. The coal bed methane horizontal well bailing coal dust pump of claim 1, wherein: the upper part of the pump barrel (1) is provided with an upper joint (12), and both sides of the inside of the upper joint (12) are provided with breathing holes (13), and the breathing holes (13) are communicated with the inside of the pump barrel (1).

5. The coal bed methane horizontal well bailing coal dust pump of claim 4, wherein: the upper joint (12) is provided with a movable joint (14) above, and an elevator placing groove (15) is arranged above the outer side of the movable joint (14), and the elevator placing groove (15) is used for installing an elevator for lifting.

6. The coal bed methane horizontal well bailing coal dust pump of claim 1, wherein: and a connecting pipe joint (16) is arranged above the piston connecting pipe (3), and the connecting pipe joint (16) is used for connecting other piston connecting pipes (3).

7. A coal bed methane horizontal well bailing coal dust pump according to any one of claims 1-6, wherein: the lower end of the pump cylinder (1) is provided with a lower joint, and the pump cylinder (1) is connected with the storage part (2) through the lower joint.