CN208830973U - Casing pipe coal bed gas recovery device - Google Patents
Casing pipe coal bed gas recovery device Download PDFInfo
- Publication number
- CN208830973U CN208830973U CN201821287341.1U CN201821287341U CN208830973U CN 208830973 U CN208830973 U CN 208830973U CN 201821287341 U CN201821287341 U CN 201821287341U CN 208830973 U CN208830973 U CN 208830973U
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- China
- Prior art keywords
- gas
- liquid separator
- wall
- casing
- flow diverter
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- 238000011084 recovery Methods 0.000 title claims abstract description 23
- 239000003245 coal Substances 0.000 title abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 96
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 42
- 239000012530 fluid Substances 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 238000009792 diffusion process Methods 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 7
- 230000008020 evaporation Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 32
- 239000007921 spray Substances 0.000 description 7
- 238000005086 pumping Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides a sleeve pipe coal bed gas recovery unit belongs to coal bed gas development field. The sleeve pipe coal bed gas recovery unit includes: the device comprises a check valve, a gas-liquid separator, a booster pump, an injection flow diverter, a constant pressure valve and a liquid level controller. One end of the check valve is connected with the oil pipe flange, and the other end of the check valve is connected with the first end on the outer wall of the gas-liquid separator; one end of the booster pump is connected with the second end of the outer wall of the gas-liquid separator, the other end of the booster pump is connected with the first upper port of the injection flow diverter, and the second upper port of the injection flow diverter is connected with the fourth end of the outer wall of the gas-liquid separator to form a loop; the third upper port of the injection flow diverter is also connected with a sleeve flange; a third end on the outer wall of the gas-liquid separator is connected with the constant pressure valve, and a fifth end on the outer wall of the gas-liquid separator is connected with the liquid level controller; and the second end and the fifth end of the gas-liquid separator are positioned at the bottom of the outer wall of the gas-liquid separator, and the third end of the gas-liquid separator is positioned at the top of the outer wall of the gas-liquid separator. The utility model discloses simple process, safety ring protects, and it is extravagant to avoid incident and unnecessary that can be effectual.
Description
Technical field
The utility model relates to cbm development field, in particular to a kind of casing coalbed methane recovery device.
Background technique
Coal bed gas well solves division gas by being depressured in process of production, and the pressure in coal bed gas well drops to parsing pressure value
Under when, just having gas generation, but parse pressure value numerical value very little, solve division gas, coal bed gas well pressure meeting in production
Lower than parsing pressure value, the inside pipe casing pressure for extending into coal bed gas well in this way can be too low.Needing in production will be in casing
Coal bed gas is transferred to surface gathering and transferring pipeline, but inside pipe casing hypotony, causes the coal bed gas of inside pipe casing that can not be transferred to ground
Face gathering line is drained, and yield is influenced.
Currently, general moved up and down by pumping unit drives pumping pump work, the gas of aspiration pump extraction enters natural gas
Compressor boost, pressurized gas can enter surface gathering and transferring pipeline, and the gas in casing can be recycled effectively.
During realizing the embodiment of the present application technical solution, discovery the relevant technologies at least exist such as present inventor
Lower problem: this method needs pumping unit to keep certain running speed, but coal bed gas well beam-pumping unit jig frequency is unable to reach now
This technique requirement.
Utility model content
The utility model provides a kind of casing coalbed methane recovery device, to solve coal seam in cbm development middle sleeve
The problem of coal bed gas caused by atmospheric pressure is too low is not easily recycled.
The application provides the following technical solutions:
A kind of casing coalbed methane recovery device, casing coalbed methane recovery device include: ball-and-seat, gas-liquid separator, pressurization
Pump, injection flow diverter, constant pressure valve and fluid level controller.
Wherein, ball-and-seat one end and oil pipe flanged joint, the other end are connect with first end on gas-liquid separator outer wall；Pressurization
Pump one end is connect with second end on gas-liquid separator outer wall, and the other end is connect with injection flow diverter upper port one, sprays flow diverter
Upper port two is connect with the 4th end on gas-liquid separator outer wall, forming circuit；Injection flow diverter upper port three is gone back and casing flange
Connection；Third end is connect with constant pressure valve on gas-liquid separator outer wall, and the 5th end and fluid level controller connect on gas-liquid separator outer wall
It connects；Second end and the 5th end are located at gas-liquid separator outer wall bottom on gas-liquid separator outer wall, and third end is located at gas-liquid separator
At the top of outer wall.
Optionally, shutoff valve is provided between ball-and-seat and oil pipe flange.
Optionally, shutoff valve is provided between second end and booster pump on gas-liquid separator outer wall.
Optionally, shutoff valve is provided between the 4th end and injection flow diverter upper port two on gas-liquid separator outer wall.
Optionally, it sprays between flow diverter upper port three and casing flange and is provided with shutoff valve.
Optionally, fluid level controller connects evaporation tank.
Optionally, shutoff valve is provided between fluid level controller and evaporation tank.
Optionally, injection flow diverter is the structure of internal run-through, is followed successively by nozzle, absorption chamber, mixing chamber and diffusion room, is sprayed
Mouth point extend into absorption chamber, and port one is that nozzle does not extend into absorption chamber one end, and port two is that diffusion room does not connect with mixing chamber
One end is touched, port three, which is located at, absorbs chamber outer wall.
The beneficial effect of technical solution provided by the embodiment of the utility model includes at least:
By booster pump, so that there is the liquid in gas-liquid separator certain pressure and speed to reach injection flow diverter
In, negative pressure is formed inside injection flow diverter, casing coal bed gas can be drained, sprays flow diverter inner sleeve coal bed gas and high pressure liquid
Body is mixed and is pressurized；Gas-liquid separator separates have the gas-liquid of certain pressure, and the gas for reaching certain pressure is defeated by constant pressure valve
External transport pipeline is arrived out.The utility model can drain casing coal bed gas and be pressurized, and pressurized casing coal bed gas can export
To surface gathering and transferring pipeline, simple process, safety and environmental protection can effectively avoid safety accident and unnecessary waste.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is casing coalbed methane recovery device schematic diagram of internal structure provided by the embodiment of the utility model；
Fig. 2 is the internal structure that casing coalbed methane recovery device provided by the embodiment of the utility model sprays flow diverter component
Schematic diagram；
Fig. 3 is the casing coalbed methane recovery device internal structure signal of addition evaporation tank provided by the embodiment of the utility model
Figure.
Wherein, as follows to each label declaration in attached drawing:
1 ball-and-seat, 2 gas-liquid separators, 3 booster pumps, 4 injection flow diverters, 5 constant pressure valves, 6 fluid level controllers, 7 evaporation tanks,
404 nozzles, 405 absorption chambers, 406 mixing chambers, 407 diffusion rooms,
Gas-liquid separator outer wall port: 201 first ends, 202 second ends, 203 third ends, 204 the 4th ends, 205 the 5th ends,
Spray flow diverter upper port: 401 ports one, 402 ports two, 403 ports three.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
The embodiment of type is described in further detail.
The utility model embodiment provides a kind of casing coalbed methane recovery device, as shown in Figure 1, casing coalbed methane recovery
Device mainly includes ball-and-seat 1, gas-liquid separator 2, booster pump 3, injection flow diverter 4, constant pressure valve 5 and fluid level controller 6.
Wherein, first end 201 connects on 1 one end of ball-and-seat and oil pipe flanged joint, the other end and 2 outer wall of gas-liquid separator
It connects；3 one end of booster pump is connect with second end 202 on 2 outer wall of gas-liquid separator, the other end and injection 4 upper port 1 of flow diverter
Connection, injection 4 upper port 2 402 of flow diverter connect with the 4th end 204 on 2 outer wall of gas-liquid separator, are formed into a loop；Injection drainage
4 upper port 3 403 of device is also connect with casing flange；Third end 203 is connect with constant pressure valve 5 on 2 outer wall of gas-liquid separator, gas-liquid
The 5th end 205 is connect with fluid level controller 6 on 2 outer wall of separator；Second end 202 and the 5th end 205 are located at 2 bottom of gas-liquid separator
Portion, third end 203 are located at 2 top of gas-liquid separator.
The effect of gas-liquid separator 2 is the mixed gas and liquid of separation, can be made of different principle, for example, root
Gas-liquid separator is made according to sedimentation theory.
2 outer wall of gas-liquid separator in the utility model there are 5 ports, be respectively used to connection ball-and-seat 1, booster pump 3,
Spray flow diverter 4, constant pressure valve 5 and fluid level controller 6.
In an optional embodiment, first end 201 is connect with ball-and-seat 1 on 2 outer wall of gas-liquid separator, first end
201 are located in the middle part of 2 outer wall of gas-liquid separator, are more than liquid level control on 2 outer wall of gas-liquid separator in the height of 2 outer wall of gas-liquid separator
The liquid level of device 6 processed alerts line height.
In the device, second end 202 is connect with booster pump 3 on 2 outer wall of gas-liquid separator, and second end 202 is located at gas-liquid
2 outer wall bottom of separator, liquid can be flowed out from gas-liquid separator 2, and be flowed into booster pump 3；On 2 outer wall of gas-liquid separator
Third end 203 is connect with constant pressure valve 5, and third end 203 is located at the top of 2 outer wall of gas-liquid separator, and gas rises after gas-liquid separation
Surface gathering and transferring pipeline is output to from constant pressure valve 5；The 5th end 205 is connect with fluid level controller 6 on 2 outer wall of gas-liquid separator, and the
Five ends 205 are located at 2 outer wall bottom of gas-liquid separator, and when accumulation of fluid excessively reaches liquid level warning line, surplus liquid is discharged.
In an optional embodiment, the 4th end 204 and injection 4 upper port of flow diverter on 2 outer wall of gas-liquid separator
2 402 link positions are arranged in the middle part of 2 outer wall of gas-liquid separator.
In the utility model, injection flow diverter 4 plays the role of drainage pressurization.As shown in Fig. 2, injection flow diverter 4 includes
Nozzle 404, absorption chamber 405, mixing chamber 406, diffusion room 407.
Wherein, liquid enters injection flow diverter 4 by booster pump 3, throttles in nozzle 404,404 near exit pressure of nozzle
Power can be lower than gas pressure in casing, and gas enters absorption chamber 405 under the action of negative pressure in casing, gas and high pressure liquid in casing
Body mixing, forms the fluid-mixing with certain speed, fluid-mixing pressure rise in diffusion room 407, subsequently into gas-liquid
Separator 2 carries out gas-liquid separation.
In order to collect the surplus liquid of the discharge of fluid level controller 6, environmental pollution is recycled and is avoided, optional one
In a embodiment, as shown in figure 3, surplus liquid is discharged into evaporation tank 7 in fluid level controller 6.
The working principle of casing coalbed methane recovery device provided by the embodiment of the utility model is as follows: pumping unit uplink makes
Oil pipe liquid enters gas-liquid separator 2 by ball-and-seat 1, and the liquid in gas-liquid separator 2 flows into booster pump 3 and is pressurized, and increases
Liquid outflow booster pump 3 after pressure enters injection flow diverter 4, and gas enters injection flow diverter 4 under the action of negative pressure in casing,
Pressurized liquid is mixed with gas in casing in mixing chamber 406, the diffusion in diffusion room 407, subsequently into gas-liquid separator
2, gas-liquid after isolation, drained from surface gathering and transferring pipeline by constant pressure valve 5 by the gas for reaching certain pressure；In real work,
When liquid reaches liquid level warning line height in gas-liquid separator 2, surplus liquid can be discharged by fluid level controller 6.
The technical solution provided in the embodiment of the present application at least has following technical effect:
In the utility model, by booster pump, so that there is the liquid in gas-liquid separator certain pressure and speed to arrive
Up in injection flow diverter, negative pressure is formed inside injection flow diverter, casing coal bed gas can be drained, sprays flow diverter inner sleeve coal
Layer gas is mixed and is pressurized with highly pressurised liquid；Gas-liquid separator separates gas-liquid, the gas for reaching certain pressure are exported by constant pressure valve
To external transport pipeline；The utility model can drain casing coal bed gas and be pressurized, and pressurized casing coal bed gas can be output to
Surface gathering and transferring pipeline, simple process, safety and environmental protection can effectively avoid safety accident and unnecessary waste.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (8)
1. a kind of casing coalbed methane recovery device, which is characterized in that described sleeve pipe coalbed methane recovery device include: ball-and-seat (1),
Gas-liquid separator (2), booster pump (3), injection flow diverter (4), constant pressure valve (5) and fluid level controller (6)；
First end on described ball-and-seat (1) one end and oil pipe flanged joint, the other end and the gas-liquid separator (2) outer wall
(201) it connects；Described booster pump (3) one end is connect with second end (202) on the gas-liquid separator (2) outer wall, the other end with
Injection flow diverter (4) upper port one (401) connection, injection flow diverter (4) upper port two (402) and the gas-liquid point
It connects, is formed into a loop from the 4th end (204) on device (2) outer wall；
Injection flow diverter (4) upper port three (403) also connect with casing flange；On gas-liquid separator (2) outer wall
Three ends (203) are connect with the constant pressure valve (5), the 5th end (205) and the Liquid level on gas-liquid separator (2) outer wall
Device (6) connection；
Wherein, the second end (202) of the gas-liquid separator (2) and the 5th end (205) are located at the gas-liquid separation
Device (2) outer wall bottom, the third end (203) are located at the top of the gas-liquid separator (2) outer wall.
2. casing coalbed methane recovery device according to claim 1, which is characterized in that the ball-and-seat (1) and the oil
Shutoff valve is provided between pipe flange.
3. casing coalbed methane recovery device according to claim 1, which is characterized in that gas-liquid separator (2) outer wall
Shutoff valve is provided between the upper second end (202) and the booster pump (3).
4. casing coalbed methane recovery device according to claim 1, which is characterized in that gas-liquid separator (2) outer wall
Shutoff valve is provided between the port two (402) on upper 4th end (204) and the injection flow diverter (4).
5. casing coalbed methane recovery device according to claim 1, which is characterized in that institute on the injection flow diverter (4)
It states and is provided with shutoff valve between port three (403) and described sleeve pipe flange.
6. casing coalbed methane recovery device according to claim 1, which is characterized in that fluid level controller (6) connection
Evaporation tank (7).
7. casing coalbed methane recovery device according to claim 6, which is characterized in that the fluid level controller (6) and institute
It states and is provided with shutoff valve between evaporation tank (7).
8. casing coalbed methane recovery device according to claim 1, which is characterized in that the injection flow diverter (4) is interior
The structure of portion's perforation, is followed successively by nozzle (404), absorption chamber (405), mixing chamber (406) and diffusion room (407), the nozzle
(404) it partially protrudes into the absorption chamber (405), the port one (401) is that the nozzle (404) do not extend into the absorption
One end of room (405), the port two (402) are one end that the diffusion room (407) does not contact with the mixing chamber (406),
The port three (403) is located at the absorption chamber (405) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821287341.1U CN208830973U (en) | 2018-08-09 | 2018-08-09 | Casing pipe coal bed gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821287341.1U CN208830973U (en) | 2018-08-09 | 2018-08-09 | Casing pipe coal bed gas recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208830973U true CN208830973U (en) | 2019-05-07 |
Family
ID=66308834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821287341.1U Active CN208830973U (en) | 2018-08-09 | 2018-08-09 | Casing pipe coal bed gas recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208830973U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685645A (en) * | 2019-09-26 | 2020-01-14 | 中石油煤层气有限责任公司 | Two-stage jet drainage device and method for coal-bed gas well mouth |
| CN111677482A (en) * | 2020-06-17 | 2020-09-18 | 大庆市中瑞燃气有限公司 | High-corrosion high-pressure natural gas well exploitation and full recovery device and method |
-
2018
- 2018-08-09 CN CN201821287341.1U patent/CN208830973U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685645A (en) * | 2019-09-26 | 2020-01-14 | 中石油煤层气有限责任公司 | Two-stage jet drainage device and method for coal-bed gas well mouth |
| CN111677482A (en) * | 2020-06-17 | 2020-09-18 | 大庆市中瑞燃气有限公司 | High-corrosion high-pressure natural gas well exploitation and full recovery device and method |
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