CN214616477U

CN214616477U - Discharging and mining device for coal seam area reservoir pressure in control range

Info

Publication number: CN214616477U
Application number: CN202121083827.5U
Authority: CN
Inventors: 郭强; 王瑞; 王韶伟; 陈瑞杰; 韩勇; 秦安国
Original assignee: Shanxi Luan Jinyuan Coalbed Methane Development Co ltd
Current assignee: Shanxi Luan Jinyuan Coalbed Methane Development Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-11-05
Anticipated expiration: 2031-05-20

Abstract

The utility model discloses a device is adopted in row of regional reservoir pressure of coal seam in control range, the large-scale drilling well comprises a well body, the mounting panel is installed at the top of the well body, the standpipe is installed to the bottom of mounting panel, the bottom of standpipe is installed and is arranged and adopt the pipe, it has the retainer plate to arrange the fixed coupling of the one end of adopting the pipe, arrange to adopt the other end of pipe and install the screw pump, the bottom at the standpipe is installed to the retainer plate, arrange the inside intercommunication of adopting pipe and standpipe, the fixed coupling in bottom of screw pump has the protecting crust, install the guard plate on the inner wall of protecting crust, a plurality of through-hole has been seted up at the top of guard plate, the filter screen is installed to the bottom of screw pump. The utility model discloses the efficiency of drainage is higher, can carry out better shock attenuation and protection to the water pump on ground simultaneously.

Description

Discharging and mining device for coal seam area reservoir pressure in control range

Technical Field

The utility model relates to a coal mining technical field especially relates to a device is adopted in row of regional reservoir pressure of coal seam in control range.

Background

The coal bed gas is hydrocarbon gas which is stored in a coal bed, takes methane as a main component, is adsorbed on the surface of coal matrix particles as a main component, is partially dissociated in coal pores or dissolved in coal bed water, is an associated mineral resource of coal, belongs to unconventional natural gas, and is a clean and high-quality energy and chemical raw material which is grown internationally in nearly twenty years. Along with the development of the prior art, the development trend of the coal bed gas exploitation industry is good, but when the coal bed gas well is constructed for gas exploitation, the water seepage phenomenon is easy to occur, if a drainage pump is adopted for drainage, water bodies existing in the coal bed are drained to the ground through continuous drainage and exploitation of the well, a regional pressure drop funnel is formed in the range of the well, the regional reservoir pressure of the coal bed in the control range of the well is effectively reduced, and methane in the coal bed begins to be resolved after the reservoir pressure is lower than the critical resolution pressure of the methane and is drained to the ground through a shaft.

The existing drainage device is used for the reason that the well body is deep, the water pump in the well is low in drainage efficiency due to the water pressure problem when the drainage water body rises, quick drainage cannot be realized, the water pump on the ground can vibrate when in use, the damping effect of the water pump is poor, the water pump is easy to influence the operation and the self, and the water pump is rocked in the well.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of low drainage efficiency and shaking of the drainage pipe in the well in the prior art, and providing a device for discharging and mining coal seam area reservoir pressure in a control range.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the discharging and mining device comprises a well body, wherein a mounting plate is mounted at the top of the well body, a water storage pipe is mounted at the bottom of the mounting plate, a discharging and mining pipe is mounted at the bottom of the water storage pipe, a fixing ring is fixedly sleeved at one end of the discharging and mining pipe, a screw pump is mounted at the other end of the discharging and mining pipe, the fixing ring is mounted at the bottom of the water storage pipe, the discharging and mining pipe is communicated with the inside of the water storage pipe, a protective shell is fixedly sleeved at the bottom of the screw pump, a protective plate is mounted on the inner wall of the protective shell, a plurality of through holes are formed in the top of the protective plate, and a filter screen is mounted at the bottom of the screw pump.

Preferably, the top of the well body is symmetrically provided with a bottom plate, the top of the bottom plate is provided with a fixing plate, and the top of the fixing plate is provided with a trepanning.

Preferably, the supporting rod is sleeved in the trepanning in a sliding mode, sliding grooves are symmetrically formed in the inner wall of the trepanning, and sliding blocks are installed in the sliding grooves in a sliding mode.

Preferably, the slider is installed in the side of branch, install the spring between the bottom of the inside of trepanning and the branch, the end of branch runs through the trepanning and installs the base.

Preferably, the suction pump is installed to the top symmetry of base, the drain pipe is installed to the mouth that draws water of suction pump, the end of drain pipe runs through the inside of base and mounting panel to standpipe.

Preferably, the bottom of the inside of the well body is provided with a reservoir, and the inner wall of the well body is provided with a pressure gauge.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a well screw pump is taken out the water in the cistern to the inside of row adopts the pipe, and get into in the water storage pipe through the drain pipe, when the screw pump is pumped water, the water passes through the through-hole on the guard plate and gets into in the protecting crust, the through-hole can block great stone or mud piece, the water in the protecting crust gets into in the water storage pipe through screw pump and row adopts the pipe after simple secondary filtration through the filter screen, ground personnel start the suction pump, the suction pump discharges the inside water of water storage pipe to ground through the drain pipe fast, pump water through the suction pump on ground and the screw pump in the well simultaneously, prevent that the water pump pumping efficiency in the well from reducing when the water is arranged to ground because of too high water pressure, and the water in the well is arranged and is adopted speed faster, efficiency is higher, when ground suction pump can give up vibrations when carrying out the drainage to the water storage pipe, the base drives the branch and shakes from top to bottom slip and cup joint in the trepanning at the fixed plate top, and the both sides of branch are passed through slider slidable mounting in the spout, and install the spring between the bottom of the inside of trepanning and the branch, and the elasticity of accessible spring carries out better shock attenuation to base and suction pump when branch and base take place vibrations, prevents that the drain pipe of suction pump side from rocking in the inside of standpipe when the drainage.

Drawings

Fig. 1 is a sectional view of a drainage and mining device for controlling the formation pressure of a coal seam region in a control range according to the present invention;

fig. 2 is an enlarged view of a position a of the drainage and mining device for the formation pressure of the coal seam region in the control range provided by the present invention;

fig. 3 is an enlarged view of a B-position of the drainage and mining device for the formation pressure of the coal seam region in the control range provided by the present invention.

In the figure: 1-well body, 2-water storage pipe, 3-mounting plate, 4-base, 5-drainage pipe, 6-fixing ring, 7-screw pump, 8-water storage tank, 9-pressure gauge, 10-water pump, 11-water discharge pipe, 12-protective shell, 13-protective plate, 14-through hole, 15-filter screen, 16-bottom plate, 17-support rod, 18-trepanning hole, 19-sliding groove, 20-sliding block, 21-fixing plate and 22-spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

Referring to fig. 1-3, a drainage and mining device for controlling the reservoir pressure of a coal seam area in a control range comprises a well body 1, wherein a mounting plate 3 is mounted at the top of the well body 1, a water storage pipe 2 is mounted at the bottom of the mounting plate 3, a drainage and mining pipe 5 is mounted at the bottom of the water storage pipe 2, a fixing ring 6 is fixedly sleeved at one end of the drainage and mining pipe 5, a screw pump 7 is mounted at the other end of the drainage and mining pipe 6, the fixing ring 6 is mounted at the bottom of the water storage pipe 2, the drainage and mining pipe 5 is communicated with the inside of the water storage pipe 2, a protective shell 12 is fixedly sleeved at the bottom of the screw pump 7, a protective plate 13 is mounted on the inner wall of the protective shell 12, a plurality of through holes 14 are formed in the top of the protective plate 13, a filter screen 15 is mounted at the bottom of the screw pump 7, a reservoir 8 is formed in the bottom of the inside of the well body 1, and a pressure gauge 9 is mounted on the inner wall of the well body 1. When the water pumping device is used, the screw pump 7 is placed in the reservoir 8 at the bottom inside the well body 1, the screw pump 7 pumps water inside the reservoir 8 to the inside of the drainage and production pipe 5 and enters the water storage pipe 2 through the drain pipe 5, when the screw pump 7 pumps water, the water enters the protective shell 12 through the through hole 14 on the protective plate 13, the through hole 14 can block large stones or mud blocks, the water inside the protective shell 12 enters the water storage pipe 2 through the screw pump 7 and the drainage and production pipe 5 after being simply filtered again through the filter screen 15, ground personnel start the water pumping pump 10, the water pumping pump 10 quickly drains the water inside the water storage pipe 2 to the ground through the drain pipe 11, the water pumping is simultaneously pumped through the water pumping pump 10 on the ground and the screw pump 7 in the well, the water pumping efficiency of the water pump in the well is prevented from being reduced due to overhigh water pressure when the water is drained to the ground, and the drainage and production speed of the water in the well is higher, the efficiency is higher.

Example 2

As shown in fig. 1 to 3, in the case where the other parts are the same as those of embodiment 1, this embodiment is different from embodiment 1 in that: bottom plate 16 is installed to the top symmetry of the well body 1, fixed plate 21 is installed at the top of bottom plate 16, trepanning 18 has been seted up at the top of fixed plate 21, branch 17 has been cup jointed in the trepanning 18 slides, spout 19 has been seted up to the symmetry on the inner wall of trepanning 18, sliding mounting has slider 20 in the spout 19, the side at branch 17 is installed to slider 20, install spring 22 between the bottom of the inside of trepanning 18 and branch 17, branch 17's end runs through trepanning 18 and installs base 4, suction pump 10 is installed to the top symmetry of base 4, drain pipe 11 is installed to the mouth that draws water of suction pump 10, the end of drain pipe 11 runs through the inside of base 4 and mounting panel 3 to standpipe 2. When ground suction pump 10 can give birth to vibrations when carrying out the drainage in 2 to the standpipe, base 4 drives branch 17 vibrations from top to bottom, and the bottom of branch 17 slides and cup joints in trepanning 18 at fixed plate 21 top, and the both sides of branch 17 pass through slider 20 slidable mounting in spout 19, and install spring 22 between the bottom of the inside of trepanning 18 and branch 17, accessible spring 22's elasticity carries out better shock attenuation to base 4 and suction pump 10 when branch 17 and base 4 take place vibrations, prevent that drain pipe 11 of suction pump 10 side from rocking in the inside of standpipe 2 when the drainage.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A drainage and mining device for reservoir pressure of a coal seam area in a control range comprises a well body (1), it is characterized in that the top of the well body (1) is provided with an installation plate (3), the bottom of the installation plate (3) is provided with a water storage pipe (2), the bottom of the water storage pipe (2) is provided with a drainage and mining pipe (5), one end of the drainage and mining pipe (5) is fixedly sleeved with a fixed ring (6), the other end of the drainage pipe (5) is provided with a screw pump (7), the fixed ring (6) is arranged at the bottom of the water storage pipe (2), the drainage pipe (5) is communicated with the inside of the water storage pipe (2), the bottom of the screw pump (7) is fixedly sleeved with a protective shell (12), the screw pump is characterized in that a protection plate (13) is installed on the inner wall of the protection shell (12), a plurality of through holes (14) are formed in the top of the protection plate (13), and a filter screen (15) is installed at the bottom of the screw pump (7).

2. The drainage and production device for the reservoir pressure of the coal seam area within the control range according to claim 1, characterized in that the top of the well body (1) is symmetrically provided with a bottom plate (16), the top of the bottom plate (16) is provided with a fixing plate (21), and the top of the fixing plate (21) is provided with a trepan boring (18).

3. The drainage and mining device for the formation pressure of the coal seam area in the control range according to claim 2, characterized in that a support rod (17) is sleeved in the sleeve hole (18) in a sliding manner, sliding grooves (19) are symmetrically formed in the inner wall of the sleeve hole (18), and sliding blocks (20) are installed in the sliding grooves (19) in a sliding manner.

4. A range-controlled coal seam region reservoir pressure drainage and mining device according to claim 3, characterized in that the sliding block (20) is installed on the side surface of the supporting rod (17), a spring (22) is installed between the bottom of the inner part of the trepanning (18) and the supporting rod (17), and the tail end of the supporting rod (17) penetrates through the trepanning (18) and is provided with the base (4).

5. The drainage and mining device for the coal seam area reservoir pressure within the control range according to claim 4, characterized in that water suction pumps (10) are symmetrically installed at the top of the base (4), a water discharge pipe (11) is installed at a water suction port of each water suction pump (10), and the tail end of each water discharge pipe (11) penetrates through the base (4) and the mounting plate (3) to the inside of the water storage pipe (2).

6. The drainage and mining device for the reservoir pressure of the coal seam area in the control range according to claim 1, characterized in that the reservoir (8) is arranged at the bottom of the inside of the well body (1), and the pressure gauge (9) is arranged on the inner wall of the well body (1).