Coal-bed gas well drainage and mining structure

Abstract

The utility model relates to the technical field of plastic film mulching, in particular to a coal-bed gas well drainage and mining structure which comprises a connecting pipe, an exhaust pipe and a top rod, an expansion pipe is fixedly connected in the connecting pipe, an air delivery pump is fixedly connected to the left side of the connecting pipe, a movable block is fixedly connected in the connecting pipe, and the movable block is fixedly connected to the right side of the connecting pipe. A fixing ring is fixedly connected to the outer side of the movable block, a protection baffle is movably connected to the interior of the connecting pipe, a motor shell is fixedly connected to the left side of the connecting pipe, a driving motor is fixedly connected to the interior of the motor shell, and by starting an air conveying pump, air is blown to an external air pipe through the air conveying pump, and air is blown to an air conveying pipe through the external air pipe; air is blown to the expansion pipe through the air conveying pipe, the expansion pipe is blown to expand, a punched hole is sealed, the sliding ball is pushed through the sliding spring, the protection baffle slides to move upwards, and the driving motor is started to move the protection baffle upwards.

Description

Technical Field

[0001] The utility model relates to the technical field of ground film covering, in particular to a coalbed methane well drainage and production structure. Background Art

[0002] Coalbed methane logging refers to the use of natural potential, dual lateral, microelectrode, compensated density, natural gamma, acoustic time difference, full acoustic wave train, neutron porosity and wellbore logging to log the difference in lithology and physical properties between coalbed methane reservoirs and surrounding rocks. Coalbed methane, also known as coalbed adsorbed gas, coalbed methane or coal mine methane, is an unconventional natural gas that is self-generated and self-stored and adsorbed on the surface of coal molecules. It is an emerging potential energy source with huge reserves. It is stored in the complex fracture-pore system of coal seams. Coal seams are not only reservoirs for storing methane, but also generators. The physical structure of coal seams is a dual porosity, that is, there is a pore system consisting of matrix pores and fracture pores in the coal seams, and the fracture pores are composed of primary cleats and secondary cleats. Coalbed methane exists in three states in coal, namely, adsorbed on the inner surface of matrix pores in a molecular state; exists in pores and fractures in a free gas state; or is dissolved in the formation water of the coal seam. Since the physical structure of coal seams and the storage and migration of coalbed methane are different from conventional natural gas, the traditional evaluation method of conventional natural gas reservoirs is not suitable for evaluating coalbed methane layers.

[0003] However, the existing devices have the following problems:

[0004] 1. The existing drainage and production structure mainly directly injects the well washing fluid into the well, so that the well washing fluid will flow directly to the coal seam during the well washing process, affecting the recovery of the washing fluid.

[0005] 2. At the same time, some devices are not equipped with a device to protect the gas well sealing device, so that when the drainage pipe is input into the gas well, the friction of the rock wall causes damage to the sealing device, affecting the service life of the working sealing device.

[0006] Therefore, in order to solve the above problems, a coalbed methane well drainage structure is proposed. Summary of the invention

[0007] The utility model aims to provide a coalbed methane well drainage structure to solve the problems of the prior art ground film covering machine mentioned in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coalbed methane well drainage structure, comprising a connecting pipe, an exhaust pipe and a top rod, an exhaust pipe is arranged above the connecting pipe, a top rod is arranged above the exhaust pipe, an expansion pipe is fixedly connected to the inside of the connecting pipe, a gas pump is fixedly connected to the left side of the connecting pipe, a movable block is fixedly connected to the inside of the connecting pipe, a fixing ring is fixedly connected to the outside of the movable block, a protective baffle is movably connected to the inside of the connecting pipe, a motor housing is fixedly connected to the left side of the connecting pipe, and a driving motor is fixedly connected to the inside of the motor housing.

[0009] Preferably, an oil delivery pipe is fixedly connected to the interior of the connecting pipe, and a connecting bolt is fixedly connected to the top of the connecting pipe.

[0010] Preferably, an air duct is fixedly connected to the right side of the exhaust pipe, and an exhaust switch is fixedly connected to the outside of the air duct.

[0011] Preferably, a connecting top cover is fixedly connected above the top rod, and a connecting plate is fixedly connected below the top rod.

[0012] Preferably, a sliding plate is fixedly connected to the outside of the expansion tube, a gas pipe is fixedly connected to the top of the expansion tube, an external gas pipe is fixedly connected to the top of the gas pipe, a gas switch is fixedly connected to the right side of the external gas pipe, and a gas pump is fixedly connected to the right side of the gas switch.

[0013] Preferably, a sliding ball is movably connected to the outer side of the movable block, a sliding spring is fixedly connected to the rear of the sliding ball, and a fixing ring is fixedly connected to the interior of the sliding spring.

[0014] Preferably, a movable wire is fixedly connected to the top of the protective baffle, a limiting ring is movably connected to the outside of the movable wire, a movable tube is movably connected to the top of the movable wire, a driving motor is fixedly connected to the left side of the movable wire, and a motor housing is fixedly connected to the outside of the driving motor.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model starts the air pump, blows air into the external air pipe through the air pump, blows air into the air pipe through the external air pipe, blows air into the expansion pipe through the air pipe, expands the expansion pipe, seals the punched hole, pushes the sliding ball through the sliding spring, slides the protective baffle upward, starts the driving motor, drives the motor to drive the moving wire, and the moving wire drives the protective baffle to move the protective baffle upward.

[0016] The utility model has a sliding piece fixedly connected to the outside of the expansion tube, an air supply pipe fixedly connected to the top of the expansion tube, an external air pipe fixedly connected to the top of the air supply pipe, an air supply switch fixedly connected to the right side of the external air pipe, and an air supply pump fixedly connected to the right side of the air supply switch, which can block the well washing fluid during the well washing process and improve the recovery efficiency of the washing fluid.

[0017] The utility model is connected with a sliding ball through the outer side of the movable block, the rear of the sliding ball is fixedly connected with a sliding spring, the interior of the sliding spring is fixedly connected with a fixing ring, the upper part of the protective baffle is fixedly connected with a moving wire, the outer side of the moving wire is movably connected with a limiting ring, the upper part of the moving wire is movably connected with a moving tube, the left side of the moving wire is fixedly connected with a driving motor, and the outer side of the driving motor is fixedly connected with a motor housing, so that the gas well sealing device can be protected and the service life of the working sealing device is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view cross-sectional schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a cross-sectional schematic diagram of the structural movable block of the utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of the motor housing of the utility model structure;

[0021] Figure 4 This is a cross-sectional schematic diagram of the gas delivery pump structure of the utility model.

[0022] In the figure: 1. connecting pipe; 101. oil delivery pipe; 102. connecting bolt; 2. exhaust pipe; 201. air guide pipe; 202. exhaust switch; 3. top rod; 301. connecting top cover; 302. connecting plate; 4. expansion pipe; 401. sliding plate; 402. air pipe; 403. external air pipe; 404. air switch; 405. air pump; 5. movable block; 501. sliding ball; 502. sliding spring; 503. fixing ring; 6. protective baffle; 601. moving wire; 602. limiting ring; 603. moving pipe; 604. motor housing; 605. driving motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4, an embodiment provided by the utility model:

[0025] A coalbed methane well drainage structure includes a connecting pipe 1, an exhaust pipe 2 and a top rod 3. The exhaust pipe 2 is arranged above the connecting pipe 1, and the top rod 3 is arranged above the exhaust pipe 2. An expansion pipe 4 is fixedly connected inside the connecting pipe 1, and a gas pump 405 is fixedly connected to the left side of the connecting pipe 1. A movable block 5 is fixedly connected inside the connecting pipe 1, and a fixing ring 503 is fixedly connected to the outside of the movable block 5. A protective baffle 6 is movably connected inside the connecting pipe 1, and a motor housing 604 is fixedly connected to the left side of the connecting pipe 1. A driving motor 605 is fixedly connected inside the motor housing 604.

[0026] Furthermore, a sliding sheet 401 is fixedly connected to the outside of the expansion tube 4, a gas pipe 402 is fixedly connected to the top of the expansion tube 4, an external gas pipe 403 is fixedly connected to the top of the gas pipe 402, a gas switch 404 is fixedly connected to the right side of the external gas pipe 403, and a gas pump 405 is fixedly connected to the right side of the gas switch 404, which can seal the gas well.

[0027] Furthermore, a sliding ball 501 is movably connected to the outer side of the movable block 5, a sliding spring 502 is fixedly connected to the rear of the sliding ball 501, and a fixing ring 503 is fixedly connected to the interior of the sliding spring 502 to guide the protective baffle.

[0028] Furthermore, a movable wire 601 is fixedly connected to the top of the protective baffle 6, a limiting ring 602 is movably connected to the outer side of the movable wire 601, a movable tube 603 is movably connected to the top of the movable wire 601, a driving motor 605 is fixedly connected to the left side of the movable wire 601, and a motor housing 604 is fixedly connected to the outer side of the driving motor 605, which can protect the expansion tube.

[0029] Working principle: During use of the device, the connecting pipe 1 is first fixed inside the mine. During cleaning, the motor 605 is started, and the motor 605 drives the moving wire 601, and the moving wire 601 drives the protective baffle 6 to move the protective baffle 6 upward, and the sliding ball 501 is pushed by the sliding spring 502 to slide the protective baffle 6 upward, and the gas supply switch 404 is turned on, and the gas supply pump 405 is started, and air is blown to the external gas pipe 403 through the gas supply pump 405, and air is blown to the gas pipe 402 through the external gas pipe 403, and air is blown to the expansion pipe 4 through the gas pipe 402 to expand the expansion pipe 4, and the drilled hole is sealed to clean the well.

[0030] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A coalbed methane well drainage structure, comprising: A connecting pipe (1), an exhaust pipe (2) and a top rod (3), wherein the exhaust pipe (2) is arranged above the connecting pipe (1), and the top rod (3) is arranged above the exhaust pipe (2), characterized in that: an expansion pipe (4) is fixedly connected inside the connecting pipe (1), an air pump (405) is fixedly connected to the left side of the connecting pipe (1), a movable block (5) is fixedly connected inside the connecting pipe (1), a fixing ring (503) is fixedly connected to the outside of the movable block (5), a protective baffle (6) is movably connected inside the connecting pipe (1), a motor housing (604) is fixedly connected to the left side of the connecting pipe (1), and a driving motor (605) is fixedly connected inside the motor housing (604).

2. A coalbed methane well drainage structure according to claim 1, characterized in that: An oil delivery pipe (101) is fixedly connected to the interior of the connecting pipe (1), and a connecting bolt (102) is fixedly connected to the top of the connecting pipe (1).

3. A coalbed methane well drainage structure according to claim 1, characterized in that: The right side of the exhaust pipe (2) is fixedly connected to an air guide pipe (201), and the outer side of the air guide pipe (201) is fixedly connected to an exhaust switch (202).

4. A coalbed methane well drainage structure according to claim 1, characterized in that: A connecting top cover (301) is fixedly connected above the top rod (3), and a connecting piece (302) is fixedly connected below the top rod (3).

5. A coalbed methane well drainage structure according to claim 1, characterized in that: A sliding sheet (401) is fixedly connected to the outside of the expansion tube (4), a gas supply pipe (402) is fixedly connected to the top of the expansion tube (4), an external gas pipe (403) is fixedly connected to the top of the gas supply pipe (402), a gas supply switch (404) is fixedly connected to the right side of the external gas pipe (403), and a gas supply pump (405) is fixedly connected to the right side of the gas supply switch (404).

6. A coalbed methane well drainage structure according to claim 1, characterized in that: The outer side of the movable block (5) is movably connected to a sliding ball (501), the rear of the sliding ball (501) is fixedly connected to a sliding spring (502), and the interior of the sliding spring (502) is fixedly connected to a fixing ring (503).

7. A coalbed methane well drainage structure according to claim 1, characterized in that: A moving wire (601) is fixedly connected to the top of the protective baffle (6), a limiting ring (602) is movably connected to the outside of the moving wire (601), a moving tube (603) is movably connected to the top of the moving wire (601), a driving motor (605) is fixedly connected to the left side of the moving wire (601), and a motor housing (604) is fixedly connected to the outside of the driving motor (605).

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