CN207660591U - A kind of novel coal seam gas well gas act device - Google Patents
A kind of novel coal seam gas well gas act device Download PDFInfo
- Publication number
- CN207660591U CN207660591U CN201721634356.6U CN201721634356U CN207660591U CN 207660591 U CN207660591 U CN 207660591U CN 201721634356 U CN201721634356 U CN 201721634356U CN 207660591 U CN207660591 U CN 207660591U
- Authority
- CN
- China
- Prior art keywords
- gas
- well
- coal bed
- compressor
- oil pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The utility model belongs to coal bed gas extraction equipment technical field, and in particular to a kind of novel coal seam gas well gas act device.The utility model is in order to solve the problems, such as that conventional coal bed gas well airlift unit compressor and fuel cost are high, can not ensure the external air source of continuous-stable, and then provide a kind of novel coal seam gas well gas act device, include mainly coal bed gas compressor, well head gas lift string, moisture trap and automatic control system three parts, it is to make high pressure gas that coal bed gas well coal seam water is lifted to ground by compressor, and gas is detached through moisture trap, the device of cycle injection compressor.The present apparatus can not only form coal bed gas compressor gas circulation, continuous-stable extraneous gas source problem can not be ensured by solving conventional gaslift, and use two-tube string structure, reduce the requirement to coal bed gas compressor row pressure, cost has been saved, has been a kind of to be suitable for that water yield is big, well bore eccentric wear is serious, the novel airlift unit that sand spits the serious coal bed gas straight well of coal dust, directional well and horizontal well is spat in coal seam.
Description
Technical field
The utility model is related to coal bed gas extraction equipment technical fields, and in particular to a kind of novel coal seam gas well gas act dress
It sets.
Background technology
Currently, coal bed gas extraction equipment mainly has pumping unit and rod pump association, screw pump, electric submersible pump, gaslift both at home and abroad
Deng, extraction equipment cuts both ways, be suitable for different well's conditions coal bed gas well.Conventional gaslift mainly has the adaptation to solid phase impurity
The features such as ability is strong, and mechanical breakdown is few, discharge capacity is big in eccentric wear, shakes out, goes out the serious coal bed gas mining area of coal dust and be widely used, but
Gaslift exposes compressor and fuel cost height, can not ensure the problems such as external air source of continuous-stable in actual use, no
The cost of investment of coal bed gas extraction is increased only, and seriously affects the continuity of coal bed gas well extraction.How to be changed by design
It makes so that conventional airlift unit is more economically stablized, and research is worth.
Invention content
The utility model is that compressor and fuel cost that the conventional gaslift of solution exposes in use are high, it is continuous steady to ensure
The technical problems such as fixed external air source difficulty provide a kind of novel coal seam gas well gas act device.
In order to solve the above technical problems, technical solution used by the utility model is：
A kind of novel coal seam gas well gas lifts device, including coal bed gas compressor, gathering station, moisture trap and automatically controls
System and several well head gas lift strings being arranged in parallel, the well head gas lift string include production casing, hollow rod and
Oil pipe, hollow rod are sheathed in oil pipe, and oil pipe is sheathed in production casing, and well head gaslift tubular is at oil pipe-sleeve ring
Empty channel, oil pipe-hollow rod annulus access and hollow rod channel totally three channels；
The oil pipe-hollow rod annulus access is connect by gas injection pipeline with coal bed gas compressor outlet side, hollow
Sucker rod channel is connect by mixing wastewater with air liquid pipe line with moisture trap and automatic control system import, oil pipe-casing annulus
Channel enters gathering station by a gas pipeline part, and a part is connect with coal bed gas compressor inlet end；
Sequentially connect on the gas injection pipeline that the oil pipe-hollow rod annulus access is connect with coal bed gas compressor outlet side
It is connected to head valve, flowmeter and flow controller；
The moisture trap and automatic control system water outlet one end are connected with blow-off pipe, gas outlet one end and coal bed gas
Compressor inlet connects；
It is connected with pressure controller between the coal bed gas compressor outlet side and inlet end.
The oil pipe is 73 oil pipes of Φ, and hollow rod is 28 hollow rods of Φ.
The coal bed gas compressor is variable frequency starting, has remote controlled explosion-proof PLC control cabinet and touch display screen.
The moisture trap and automatic control system be with explosion-proof PLC control cabinet, with touch display screen, with not
The device of uninterruptible power carried out telecommunication.
The flow is calculated as vortex precession flowmeter.
The ground injecting gas pipeline, mixing wastewater with air liquid pipe line, gas pipeline are D25*2.5 seamless steel pipes, blow-off pipe DN20
PVC drain pipe.
The novel coal seam gas well gas of the utility model lifts device in specific works, and system is returned confession using coal bed gas compressor
Coal bed gas through gas injection pipeline out of oil pipe-hollow rod annular space injection coal bed gas well hole, keep air-water mixture empty from Φ 28
Heart sucker rod returns out ground, enters moisture trap separation through mixing wastewater with air pipeline, the gas isolated, which returns to compressor, to be continued
Cycle, the water isolated are discharged by blow-off pipe.In the above process, with the continuous discharge of water flooding, oil pipe-casing annulus
Hydrodynamic face be gradually reduced, to reduce flowing bottomhole pressure (FBHP), be finally reached the purpose of water pumping gas production.
The utility model has the advantages that compared with prior art:
（1）Gas circulation after separation is injected into coal bed gas compressor, continuous-stable can not be ensured by solving conventional gaslift
The problem of external air source.
（2）Oil pipe forms two-tube string structure with hollow rod, reduces the requirement to coal bed gas compressor row pressure, cost
With substantially reducing.
（3）Without any underground moving component, safeguards and maintenance carries out on ground, it is cost-effective.
（4）Entire mining process is no bar mining, does not generate eccentric wear, is not influenced by shaking out, going out coal dust, is not necessarily to righting,
Straight well, directional well are applicable on horizontal well.
（5）Full-automatic controllable mining so that mining is more efficient, safe.
（6）No submergence requirement, reduces flowing bottomhole pressure (FBHP) to the maximum extent.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
In figure：1- coal bed gas compressors, 2- flow controllers, 3- flowmeters, 4- gas injection pipelines, 5- pressure controllers, 6-
Production casing, the coal seam of 7- mesh, 8- hollow rods, 9- oil pipes, 10- hydrodynamics face, 11- head valves, 12- mixing wastewater with air liquid pipes
Line, 13- gas pipelines, 14- gathering stations, 15- moisture traps and automatic control system, 16- blow-off pipes.
Specific implementation mode
In conjunction with attached drawing, specific embodiment of the present utility model is described further：
Prepare before construction：The well or well group number that connect as needed prepare coal bed gas compressor one, moisture trap and
Automatic control cabinet is a set of, and each one of coal bed gas flow controller, flowmeter, pressure controller, head valve, D25*2.5 is seamless
Steel pipe is several, DN20 PVC drain pipes.
Operational procedure：
Using D25*2.5 seamless steel pipes according to shown in Fig. 1 by coal bed gas compressor, moisture trap and automatic control cabinet with
Coal bed gas well well head gas lift string oil pipe-hollow rod annulus access, hollow rod channel, oil pipe-casing annulus channel
It is connected, and is pressed on the seamless steel pipe that coal bed gas compressor is connect with coal bed gas well well mouth oil pipe-hollow rod annulus access
Flow controller, flowmeter, head valve are installed in position shown in Fig. 1, in the steel pipe of coal bed gas compressor inlet end and outlet side
Between pressure controller is installed, using DN20 PVC drain pipes by the water outlet and pollution discharge pond of moisture trap and automatic control cabinet
Installation is completed in connection.
The novel coal seam gas well gas of the utility model lifts device in specific works, opens the head valve on gas injection pipeline
11, external air source high pressure is injected into coal bed gas well well head gas lift string oil pipe 9 and hollow rod first with coal bed gas compressor 1
In 8 annular space, waits for that coal seam water is stablized from hollow rod 8 through mixing wastewater with air liquid pipe line 12 and flow into moisture trap and automatically control
After system 15, open moisture trap and automatic control system 15, and observe pressure controller 5, when in gas pipeline 13 gas with
The gas that moisture trap and automatic control system 15 are isolated enters coal bed gas compressor 1 after converging, when gas atmosphere reaches
When the specified pressure of inspiration(Pi) of coal bed gas compressor 1, the external air source of coal bed gas compressor 1 is cut off, cycle is realized, in cyclic process
Middle pressure controller 5 can automatic regulating system pressure, ensure the circulatory system stablize.During recycling mining, with water flooding
Continuous discharge, the reservoir pressure in coal seam is also being gradually reduced, after reservoir pressure is down under critical desorption pressures, coal bed gas
Well starts aerogenesis.
Claims (6)
1. a kind of novel coal seam gas well gas lifts device, it is characterised in that：Including coal bed gas compressor（1）, gathering station（14）, air water
Separator and automatic control system（15）And several well head gas lift strings being arranged in parallel, the well head gas lift string include life
Produce casing（6）, hollow rod（8）And oil pipe（9）, hollow rod（8）It is sheathed on oil pipe（9）In, oil pipe（9）It is sheathed on life
Produce casing（6）In, form oil pipe（9）Casing（6）Annulus access, oil pipe（9）Hollow rod（8）Annulus access and hollow
Sucker rod（8）Channel totally three channels；
The oil pipe（9）Hollow rod（8）Annulus access passes through gas injection pipeline（4）With coal bed gas compressor（1）Outlet side connects
It connects, hollow rod（8）Channel passes through mixing wastewater with air liquid pipe line（12）With moisture trap and automatic control system（15）Import
Connection, oil pipe（9）Casing（6）Annulus access passes through gas pipeline（13）A part enters gathering station（14）, a part of and coal bed gas
Compressor（1）Inlet end connects；
The oil pipe（9）Hollow rod（8）Annulus access and coal bed gas compressor（1）The gas injection pipeline of outlet side connection（4）
On be sequentially connected with head valve（11）, flowmeter（3）And flow controller（2）；
The moisture trap and automatic control system（15）Water outlet one end is connected with blow-off pipe（16）, gas outlet one end and coal
Layer air compressor（1）Air inlet connects；
The coal bed gas compressor（1）Pressure controller is connected between outlet side and inlet end（5）.
2. novel coal seam gas well gas according to claim 1 lifts device, it is characterised in that：The oil pipe（9）For Φ 73
Oil pipe, hollow rod（8）For 28 hollow rods of Φ.
3. novel coal seam gas well gas according to claim 2 lifts device, it is characterised in that：The coal bed gas compressor（1）
For variable frequency starting, there is remote controlled explosion-proof PLC control cabinet and touch display screen.
4. novel coal seam gas well gas according to claim 3 lifts device, it is characterised in that：The moisture trap and automatic
Control system（15）For with explosion-proof PLC control cabinet, carrying out telecommunication with touch display screen, with uninterruptible power supply
Device.
5. novel coal seam gas well gas according to claim 4 lifts device, it is characterised in that：The flowmeter（3）For precession
Swirl flowmeter.
6. novel coal seam gas well gas according to claim 5 lifts device, it is characterised in that：The gas injection pipeline（4）, air water
Mixed liquor pipeline（12）, gas pipeline（13）For D25*2.5 seamless steel pipes, blow-off pipe（16）For DN20 PVC drain pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721634356.6U CN207660591U (en) | 2017-11-30 | 2017-11-30 | A kind of novel coal seam gas well gas act device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721634356.6U CN207660591U (en) | 2017-11-30 | 2017-11-30 | A kind of novel coal seam gas well gas act device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207660591U true CN207660591U (en) | 2018-07-27 |
Family
ID=62946745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721634356.6U Active CN207660591U (en) | 2017-11-30 | 2017-11-30 | A kind of novel coal seam gas well gas act device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207660591U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984918A (en) * | 2019-12-03 | 2020-04-10 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Gas lift drainage gas recovery device and method for unconventional gas reservoir horizontal well |
| CN114482931A (en) * | 2020-11-13 | 2022-05-13 | 中国石油天然气股份有限公司 | Gas well lifting device |
| CN117605443A (en) * | 2023-12-06 | 2024-02-27 | 广东佛燃科技有限公司 | System for realizing gas lift and wellhead pressurization by using gas produced by gas well as gas source |
-
2017
- 2017-11-30 CN CN201721634356.6U patent/CN207660591U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984918A (en) * | 2019-12-03 | 2020-04-10 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Gas lift drainage gas recovery device and method for unconventional gas reservoir horizontal well |
| CN114482931A (en) * | 2020-11-13 | 2022-05-13 | 中国石油天然气股份有限公司 | Gas well lifting device |
| CN117605443A (en) * | 2023-12-06 | 2024-02-27 | 广东佛燃科技有限公司 | System for realizing gas lift and wellhead pressurization by using gas produced by gas well as gas source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017075943A1 (en) | Device and method for water drainage and gas production by pressure control and gas lift | |
| WO2017190484A1 (en) | Gas production equipment via double-pipe negative pressure water drainage | |
| CN207660591U (en) | A kind of novel coal seam gas well gas act device | |
| CN105332384B (en) | Super pressure inhales joint pumping system and its method of work | |
| CN203257380U (en) | Novel coal bed gas discharging and extracting device | |
| CN201963276U (en) | Device for pressurized gas lift water pumping gas production | |
| CN106522892B (en) | Hydraulic throwing-fishing type sand discharging and coal powder discharging gas production device and method | |
| CN108756847B (en) | Oil-water separation unit double-pump injection-production system before pump | |
| CN101446281B (en) | Drainage device for coal bed gas well electric submersible centrifugal pump | |
| CN201671603U (en) | Gas well self-lifting dewatering gas producing device | |
| CN110107264A (en) | A kind of gaslift suitable for gas well Life cycle water pumping gas production | |
| CN113931595B (en) | Ultrahigh pressure fracturing wellhead device convenient to assemble and assembling device thereof | |
| CN215108858U (en) | Low-liquid-volume oil well casing gas recovery system | |
| CN206554887U (en) | Single tube post reacting cycle sprays pump oil extracting device in oil pipe | |
| CN105649559A (en) | Device and method for removing hole bottom sediment of pore-forming pouring pile | |
| CN210317259U (en) | Gas lift device suitable for gas well full life cycle drainage gas production | |
| CN111911117A (en) | Combustible ice exploitation pipe column heated by stratum energy and operation method thereof | |
| CN206495664U (en) | Hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit | |
| CN201144831Y (en) | Coal bed gas well electric submersible centrifugal pump discharging and extracting device | |
| CN106122122B (en) | A kind of large aperture flow-controllable siphoning installation | |
| CN104358545A (en) | Method and device for discharging sand and pulverized coal and producing gas | |
| CN104514523A (en) | Down hole gas collection device | |
| CN205012973U (en) | Machine pump drainage liquid gas production device | |
| CN202064396U (en) | Double-pump sealed stabilized-voltage water supply device | |
| CN204851187U (en) | Coal bed gas drainage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |