CN105089576B - A kind of CBM Drainage mining method and its equipment - Google Patents
A kind of CBM Drainage mining method and its equipment Download PDFInfo
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- CN105089576B CN105089576B CN201510581003.3A CN201510581003A CN105089576B CN 105089576 B CN105089576 B CN 105089576B CN 201510581003 A CN201510581003 A CN 201510581003A CN 105089576 B CN105089576 B CN 105089576B
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Abstract
The invention discloses a kind of CBM Drainage mining method and its equipment, it is related to drilling-production equipment technical field, shaft bottom water using negative pressure equipment is atomized and discharge ground is aspirated together with coal bed gas by CBM Drainage mining method, gas-liquid separation is carried out again, obtains clean coal bed gas；Coal bed gas extraction equipment used includes pedestal, power plant, transmission mechanism, switch board, separator, compression set, condensing unit, oil pipe and takes water atomization plant, take the bottom that water atomization plant is connected to gas well oil pipe, power plant drives compression set by transmission mechanism, coal seam air water gaseous mixture is aspirated into oil inlet pipe using compression set, enters back into separator, the coal bed gas isolated enters gathering line after sequentially entering compression set compression, condensing unit cooling, and the water and impurity isolated are discharged through sewage draining exit.Do not have to the installation drainage arrangements such as pumping unit or screw pump using the present invention, reduce production cost and save maintenance cost, improve working efficiency and individual well recovery ratio.
Description
Technical field
The present invention relates to drilling-production equipment technical field, especially a kind of CBM Drainage mining method and its equipment.
Background technology
China is a producing coal and with coal big country, and coal bed gas resource enriches.The calorific value of coal bed gas is suitable with natural gas, can be with
Mixed with natural gas it is defeated mixed, and burn after it is very clean, be nearly free from any exhaust gas, be emerge in the world in recent years it is clean
Only, high-grade energy and industrial chemicals.Reasonable development coal bed gas can not only substitute natural gas, improve energy supply and utilization rate,
Also the security risk of coal mining can be reduced, so the exploitation of coal bed gas is increasingly taken seriously.
China at present still be in cbm development initial stage, generally use draining degassing method, with three take out equipment (pumping unit,
Sucker rod, oil well pump) or with screw pump (or other pump) draining of drawing water, coal bed gas is made to be discharged into from well by pressure itself
Gathering line.On the one hand, it is played since the back pressure of gathering line can influence the relatively low coal bed gas well capacity of pressure；On the other hand,
Due to often having cinder, coal ash holddown, stifled pump in draining, cause to shut down, ruin pump, and subtracting with the Sino-Japan water yield of well
Few, this easier generation of failure for shutting down, stopping well influences coal bed gas well production time efficiency.Cause China per annual individual well
Methane output is relatively low, and cost of winning is high.
Invention content
The technical problems to be solved by the invention are to provide a kind of CBM Drainage mining method and its equipment, this method operation letter
Single, low manufacture cost is the simple and compact equipment structure, of low cost, can reduce production cost, improve working efficiency and single well
Yield.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of CBM Drainage mining method, includes the following steps：The oil pipe of gas well is connected with negative pressure equipment first, to increase
Negative pressure in the oil pipe of shaft bottom enhances the suction force of oil pipe, finally carries out the coal seam gas and water and impurity that are drawn into from oil pipe on ground
Gas-liquid separation removes water and impurity, obtains clean coal bed gas.
Preferably, it connects one in the end of down-hole oil tube and takes water atomization plant, underground water and coal bed gas can be taken out together
It is drawn onto in oil pipe, can be droplet by underground water atomization using water atomization plant is taken, as coal bed gas air-flow discharges ground together.
Coal bed gas extraction equipment used in above-mentioned CBM Drainage mining method, including pedestal, power plant, switch board, transmission
Mechanism, separator, compression set, condensing unit, connecting tube and the water atomization plant of taking mounted on oil pipe bottom, the power
Device, switch board, transmission mechanism, separator, compression set and condensing unit are arranged on pedestal, the separator
Import is connected by connecting tube with oil pipe outlet, and the power plant drives compression set, coal bed gas and water by transmission mechanism
Enter separator after into oil pipe under the action of compression set suction force, the coal bed gas after separator detaches enters pressure
Compression apparatus, compressed coal bed gas enter condensing unit cooling, and the coal bed gas for exporting out from condensing unit enters gathering line,
The water and impurity isolated through separator are discharged through sewage draining exit；The water atomization plant of taking includes supervisor, blade and water pipe, institute
It is inner small outer big cone ports to state supervisor lower end, and the water pipe upper end is connected by blade with being responsible for the cone ports inner wall of lower end,
The spacing with blades is distributed on pipe outer wall.
Preferably, the blade is distributed on tubulose connector, and the connector is connect with water pipe thread, the connector
Lower end is equipped with six side's boss；The blade profile is streamlined for thick middle thin edge.
Preferably, the supervisor upper end is equipped with the female adapter being connect with oil pipe, and the female adapter meets SY/
T5988-2012 standards；The surfaces externally and internally of the supervisor, blade and water pipe are coated with tungsten layer.
Preferably, the transmission mechanism includes Hooks coupling universal coupling, the first transmission shaft, second driving shaft and two belt pulleys
Group, the output shaft of the power plant are connected by Hooks coupling universal coupling with the first transmission shaft, and first transmission shaft and second passes
Moving axis is respectively erected on bearing block, and two belt pulley sets include belt wheel I, belt wheel II, belt wheel III, belt wheel IV, belt I and belt
II, belt wheel I is arranged on the first transmission shaft, and belt wheel II and belt wheel III are arranged on second driving shaft, belt wheel IV and compression set
Main shaft be connected, belt I connection belt wheel I and belt wheel II, belt II connect belt wheel III and belt wheel IV.Power plant passes through respectively
Power is transferred to compression set by one transmission shaft and second driving shaft.
Preferably, the shell being set on the base, the power plant, switch board, transmission mechanism, separation dress are further included
Put, compression set and condensing unit are respectively provided with inside the shell, the enclosure by the partition board on pedestal be divided into left and right two solely
Vertical space, the power plant and switch board are arranged on the left side of shell, the transmission mechanism, separator, compression set
The right side of shell is arranged on condensing unit, the condensing unit is arranged on cover top portion.
Preferably, the power plant is gas engine, is additionally provided between the gas engine and separator outlet
Branch line provides air source by branch line for gas engine.
Preferably, the power plant is engine.
It is using advantageous effect caused by above-mentioned technical proposal：Power is transmitted through transmission mechanism using power plant
To compression set, in oil pipe under suction force effect, coal bed gas air-flow by take the supervisor of water atomization plant and water pipe gap into
Enter oil pipe, underground water forms flow column in water pipe, and it is droplet to be atomized in water pipe upper end by ascending air, and coal is carried outside with air-flow
Layer gas well, coal seam air water gaseous mixture enters separator and the moisture and coal ash that are mixed in coal bed gas is detached discharge, clean
Coal bed gas enters compression set compression, and compressed coal bed gas enters condensing unit cooling, finally enters gathering line.Utilize this
Invention need not install other pumping equipments, by compression set and the associated working for taking water atomization plant, with coal bed gas Jiang Shui, lack
Other impurity such as the coal ash of amount are carried to ground, without installing the drainage arrangements such as pumping unit or screw pump again, using in equipment from
Gas is carried out preliminary separation by the separator of band, and the condensation of last condensed device feeds gas into coal bed gas collector and delivery pipe
Line, due to the equipment that do not draw water, can to avoid coal ash holddown, block the halt productions such as runner repair, not only saved maintenance cost but also
It can ensure the performance of production capacity；Mode is adopted by the mechanical auxiliary of compression set, not only without the influence of well head and gathering line back pressure,
Often there is certain vacuum degree, be conducive to the precipitation of coal bed gas and giving full play to for single well productivity, improve the gas production effect of gas well
Rate；In addition, the air inlet of the mining equipment is directly connected with the oil pipe of coal bed gas well, it is fitted without in down-hole oil tube and takes water mist
Makeup can also work in the case of putting, and improve the recovery ratio of gas well.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention；
Fig. 2 is the vertical view of Fig. 1；
Fig. 3 is the medium flow graph of the present invention；
Fig. 4 is the structure diagram that water atomization plant is taken in Fig. 1；
Fig. 5 is the bottom view of Fig. 4；
Fig. 6 is the structure diagram of blade in Fig. 4；
Fig. 7 is the A direction views in Fig. 6；
Fig. 8 is the B direction views in Fig. 6；
In figure：1- pedestals, 2- shells, 3- power plants, 4- switch boards, 5- transmission mechanisms, 6- separators, 7- compression dresses
It puts, 9- condensing units, 10- takes water atomization plant, 11- air inlets, 12- exhaust outlets, 13- connecting tubes, 14- partition boards, 15- drainings
Mouthful, 16- gas engines, 17- oil pipes, 51- Hooks coupling universal couplings, the first transmission shafts of 52-, 53- second driving shafts, 54- bearing blocks,
55- belt wheel I, 56- belt wheel II, 57- belt wheels III, 58- belt wheels IV, 59- belts I, 60- belt II, 61- separator entrances, 62-
Separator exports, 71- compression set entrances, the outlet of 72- compression sets, 81- gas circulation lines, 82- discharge pipe lines, 83- points
Bye-pass, 91- condensing unit entrances, the outlet of 92- condensing units, 101- supervisors, 102- blades, 103- water pipes, 104- connectors,
Six side's boss of 105-.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
A kind of CBM Drainage mining method, includes the following steps：First by the oil pipe of gas well 17 by connecting tube directly and negative pressure
The air inlet of equipment is connected, and to increase negative pressure in shaft bottom oil pipe 17, enhances the suction force of oil pipe 17, will finally be aspirated from oil pipe 17
Coal seam gas and water and impurity on to ground carry out gas-liquid separation, remove water and impurity, obtain clean coal bed gas；It can also be
The end of 17 underground of oil pipe connects one and takes water atomization plant 10, and underground water and coal bed gas are drawn into together in oil pipe 17, profit
Can be droplet by underground water atomization with water atomization plant 10 is taken, as coal bed gas air-flow discharges ground together.
Coal bed gas extraction equipment used in above-mentioned CBM Drainage mining method, as shown in Figs 1-4, including pedestal 1, power plant
3rd, switch board 4, transmission mechanism 5, separator 6, compression set 7, condensing unit 9, connection 13 and mounted on 17 bottom of oil pipe
Take water atomization plant 10, the power plant 3, switch board 4, transmission mechanism 5, separator 6, compression set 7 and condensing unit 9
It is arranged on pedestal 1, the switch board 4 is arranged on 3 top of power plant, and the condensing unit 9 is arranged on 6 He of separator
The top of compression set 7, the import of the separator 6 are connected by connecting tube 13 with the outlet of oil pipe 17, the power plant 3
Compression set 7 is driven by transmission mechanism 5, coal bed gas and water initially enters and takes water atomization plant 10, make water fogging it is latter with into
Enter oil pipe 17, separator 6 is entered under the action of 7 suction force of compression set, the coal bed gas after the separation of separator 6 enters
Compression set 7 is compressed, and compressed coal bed gas enters back into condensing unit 9 and cools down, and coal bed gas after cooling is from condensing unit
Outlet 92 out enters gathering line, and the water and impurity isolated through separator 6 are discharged through sewage draining exit；As Figure 4-8, institute
It is inner small outer big circular cone to state and take water atomization plant 10 including being responsible for 101, blade 102 and water pipe 103,101 lower ends of the supervisor
Mouthful, the water pipe 103 is connected by blade 102 with being responsible for the cone ports inner wall of 101 lower ends, and the blade 102 is distributed on water pipe
103 outer walls.
It dismantles in order to facilitate the installation of, the blade 102 is distributed on tubulose connector 104, the connector 104 and water pipe
103 are threadedly coupled, and 104 lower end of connector is equipped with six side's boss 105, and when easy disassembly exerts a force；102 section of blade is
Thick middle thin edge it is streamlined, to reduce resistance；It is described in order to improve the interchangeability taken between water atomization plant 10 and oil pipe 17
It is responsible for 101 upper ends and is equipped with the female adapter being connect with oil pipe 17, the female adapter meets SY/T5988-2012 standards,
It is convenient for changing and takes water atomization plant 10.Simultaneously in order to improve the wearability for taking water atomization plant 10, corrosion-resistant and high-temperature stability,
Tungsten is integrally plated to it taking 10 completion of processing of water atomization plant, the surfaces externally and internally of supervisor 101, blade 102 and water pipe 103 is made to plate
There is tungsten layer.
As shown in figure 3, the operation principle of this equipment, which is compression set 7, passes through separator 6 and connecting tube 13 and oil pipe 17
Connection, forms suction force in oil pipe 17, and down-hole coal bed gas forms air-flow by being responsible between 101 lower cone ports and water pipe 103
Into supervisor 101 and oil pipe 17；When 103 lower end of water pipe was flooded in level of ground water raising, acted on by suction force in supervisor 101, ground
Lower water forms flow column in water pipe 103, and it is droplet to be sprayed in 103 upper end of water pipe by the coal bed gas aerodynamic atomization risen, and
Coal bed gas well is carried outside by ascending air, so as to play the role of controlling underground water level.
Medium flow field is to as follows in this equipment：Coal seam air water gaseous mixture enters from 17 bottom of oil pipe, is exported in oil pipe 17 through even
Take over 13, air inlet 11 enter the air delivering pipeline 81 being connect with separator entrance 61, carry out gas-liquid point in separator 6 first
From the coal ash being mingled in coal bed gas and water are separated the sewage draining exit through separator 6 and enter discharge pipe line 82, finally from row
Outside 15 device for transferring of discharge outlet of water lines 82, compressed certainly through air delivering pipeline 81 again from 62 coal bed gas out of separator outlet
Device portal 71 enters compression set 7, and the compressed device 7 of coal bed gas comes out, then from compression set outlet 72 through gas transmission after compressing
81 autocondensation device portal 91 of pipeline cools down into condensing unit 9, is come out after coal bed gas cooling from condensing unit outlet 92,
Finally enter gathering line from the exhaust outlet 12 of air delivering pipeline 81.
As shown in Fig. 2, the transmission mechanism 5 includes Hooks coupling universal coupling 51, the first transmission shaft 52, second driving shaft 53 and two
A belt pulley set, the output shaft of the power plant 3 are connected by Hooks coupling universal coupling 51 with the first transmission shaft 52, and described first passes
Moving axis 52 and second driving shaft 53 are respectively erected on bearing block 54, and two belt pulley sets include belt wheel I55, belt wheel II 56, band
III 57, belt wheel IV 58, belt I59 and belt II 60 are taken turns, belt wheel I55 is arranged on the first transmission shaft 52, belt wheel II 56 and belt wheel
III 57 are arranged on second driving shaft 53, and belt wheel IV 58 is connected with the main shaft of compression set 7, belt I59 connection belt wheel I55 and band
II 56 are taken turns, belt II 60 connects belt wheel III 57 and belt wheel IV 58.Power plant 3 passes through the first transmission shaft 52 and the second transmission respectively
Power is transferred to compression set 7 by axis 53.
The specific work process of embodiment illustrated in fig. 1 is as follows：Power plant 3 imparts power to pressure by transmission mechanism 5
Compression apparatus 7, compression set 7 is started to work applies oil pipe 17 certain negative pressure through separator 6, the suction masterpiece in oil pipe 17
Under, coal bed gas air-flow enters oil pipe 17 by taking the supervisor 101 of water atomization plant 10 with 103 gap of water pipe, and underground water is in water
Flow column is formed in pipe 103, it is droplet to be atomized when 103 upper end of water pipe is sprayed by ascending air, and coal bed gas is carried outside with air-flow
Well；The coal seam air water gaseous mixture for extracting ground out by oil pipe 17 enters separator 6 first from air inlet 11, and separator 6 can be selected
The moisture being mixed in coal bed gas and coal ash separation are entered discharge pipe line by gas-liquid separator using gas-liquid separator through sewage draining exit
82 discharges；Clean coal bed gas is compressed from compression set entrance 71 into compression set 7, and compression set 7 can be selected reciprocal
Formula compressor, compressed high temperature coal bed gas is from 72 output of compression set outlet, through 81 autocondensation device portal 91 of air delivering pipeline
It is cooled down into condensing unit, air-cooled condenser can be selected in condensing unit 9, and coal bed gas after cooling is exported from condensing unit outlet 92
Finally enter gathering line.
Coal bed gas is aspirated it is simply that power is transferred to compression set 7 by power plant 3 through transmission mechanism 5
Come, enter back into separator 6 and separate the moisture being mixed in coal bed gas and coal ash and discharged through discharge pipe line 82, it is clean
Coal bed gas sequentially enters compression set 7 through air delivering pipeline 81 and compresses, cooled down into condensing unit 9, finally enters gathering line.
Level meter is additionally provided on the separator 6, pressure is equipped on the air delivering pipeline 81 of 11 rear end of air inlet
Table and temperature control device can be controlled the rotating speed of whole equipment according to gas well pressure by switch board 4, can also control rotating speed manually；
The liquid level in coal bed gas temperature and separator 6 is detected simultaneously, and when temperature is more than certain value, automatic shutdown protection is arranged simultaneously
The solenoid valve being connected with switch board 4 can be used in control valve in water lines 82, makes it have automatically and manually drain function.It utilizes
The equipment can be according to situation adjust automatically pump drainage speed, automatic start-stop and the warning function of gas well pressure.
When this equipment application is in high temperature, high and cold and big dust storm area, shell 2, the power should be installed on pedestal 1
Device 3, switch board 4, transmission mechanism 5, separator 6, compression set 7 and condensing unit 9 are arranged in shell 2, described outer
2 middle part of shell is equipped with partition board 14, and the power plant 3 and switch board 4 are arranged on the left side of shell 2, and the transmission mechanism 5 divides
From the right side that device 6, compression set 7 and condensing unit 9 are arranged on shell 2, the condensing unit 9 is arranged on 2 top of shell；
Shell 2 is a kind of side's cover structure, and the partition board 14 made by steel plate is divided into two parts, and each section has three face protective plates
And top plate, outer wall and top are provided with ventilation opening, shell 2 and pedestal 1 form the space of a closing, play anti-after being installed together
The effect of shield.
As shown in figure 3, when power plant 3 selects gas engine 16, the air delivering pipeline 81 further includes connection combustion gas
The branch line 83 of engine 16, the branch line 83 are communicated with the outlet of separator 6, are connected with separator outlet 62
Branch line 83 provide air source for gas engine 16, in addition device that air source is provided can be saved.
In addition, engine also can be selected in the power plant 3, motor or internal combustion engine etc. can be selected other as needed
Power source, this is just without branch line 83.
Other pumping equipments need not be installed using the present invention, pass through compression set 7 and the joint work for taking water atomization plant 10
Make, carry other impurity such as water, a small amount of coal ash to ground with coal bed gas, without installing the drainings such as pumping unit or screw pump again
Gas is carried out preliminary separation by device using the separator 6 carried in equipment, and the condensation of last condensed device 9 is by gas
Body is sent into coal bed gas gathering line, can be to avoid halt productions dimensions such as coal ash holddown, blocking runners due to the equipment that do not draw water
It repaiies, has both saved the performance that maintenance cost ensures that production capacity；Mode is adopted by the mechanical auxiliary of compression set 7, not only without well head
And the influence of gathering line back pressure, often have certain vacuum degree, be conducive to coal bed gas precipitation and single well productivity it is abundant
It plays, improves the gas production efficiency of gas well；In addition, the air inlet of the mining equipment is directly connected with the oil pipe of coal bed gas well,
Down-hole oil tube is fitted without take water atomization plant in the case of can also work, improve the recovery ratio of gas well.
Claims (5)
1. a kind of CBM Drainage mining method, it is characterised in that include the following steps：The oil pipe of gas well (17) is set with negative pressure first
Standby to be connected, to increase shaft bottom oil pipe (17) interior negative pressure, the suction force of enhancing oil pipe (17) finally will be drawn into ground from oil pipe (17)
Coal seam gas and water and impurity on face carry out gas-liquid separation, remove water and impurity, obtain clean coal bed gas；In down-hole oil tube
(17) end connects one and takes water atomization plant (10), will can together be drawn into oil pipe (17) with coal bed gas after the water atomization of underground
It is interior, can be droplet by underground water atomization using water atomization plant (10) is taken, steam discharges ground together with coal bed gas air-flow；
The water atomization plant (10) of taking includes supervisor (101), blade (102) and water pipe (103), described supervisor (101) lower end
For inner small outer big cone ports, water pipe (103) upper end passes through blade (102) and the cone ports inner wall of supervisor (101) lower end
It is connected, the blade (102) is uniformly at intervals in water pipe (103) outer wall；Blade (102) section is the stream of thick middle thin edge
Line style.
2. a kind of coal bed gas extraction equipment used in CBM Drainage mining method as described in claim 1, it is characterised in that：Including
Pedestal (1), power plant (3), switch board (4), transmission mechanism (5), separator (6), compression set (7), condensing unit
(9), connecting tube (13) and water atomization plant (10), the power plant (3), switch board are taken mounted on oil pipe (17) bottom
(4), transmission mechanism (5), separator (6), compression set (7) and condensing unit (9) are arranged on pedestal (1), described point
Import from device (6) is connected by connecting tube (13) with oil pipe (17) outlet, and the power plant (3) passes through transmission mechanism
(5) after driving compression set (7), coal bed gas and water enter oil pipe (17), enter under the action of compression set (7) suction force and divide
From device (6), the coal bed gas after separator (6) separation enters compression set (7) compression, and compressed coal bed gas enters back into
Condensing unit (9) cools down, and the coal bed gas come out from condensing unit outlet (92) enters gathering line, is detached through separator (6)
The water and impurity gone out is discharged through sewage draining exit；Further include the shell (2) being arranged on pedestal (1), the power plant (3), control
Cabinet (4), transmission mechanism (5), separator (6), compression set (7) and condensing unit (9) are arranged in shell (2), described
Shell (2) is internal to be divided into two separate spaces in left and right, the power plant (3) and switch board by the partition board (14) on pedestal (1)
(4) left side of shell (2), the transmission mechanism (5), separator (6), compression set (7) and condensing unit (9) are arranged on
The right side of shell (2) is arranged on, the condensing unit (9) is arranged at the top of shell (2)；The power plant (3) is combustion gas
Engine (16) is additionally provided with branch line (83) between the outlet of the gas engine (16) and separator (6), passes through branch
Pipeline (83) provides air source for gas engine (16).
3. coal bed gas extraction equipment as claimed in claim 2, it is characterised in that：The blade (102) is distributed on tubulose connection
On head (104), the connector (104) is threadedly coupled with water pipe (103), and connector (104) lower end is equipped with six side's boss
(105)。
4. coal bed gas extraction equipment as claimed in claim 3, it is characterised in that：Described supervisor (101) upper end is equipped with and oil pipe
(17) female adapter of connection, the female adapter meet SY/T5988-2012 standards；The supervisor (101), blade
(102) and the surfaces externally and internally of water pipe (103) is coated with tungsten layer.
5. coal bed gas extraction equipment as claimed in claim 2, it is characterised in that：The transmission mechanism (5) is including universal joint shaft
Device (51), the first transmission shaft (52), second driving shaft (53) and two belt pulley sets, the output shaft of the power plant (3) lead to
It crosses Hooks coupling universal coupling (51) with the first transmission shaft (52) to be connected, first transmission shaft (52) and second driving shaft (53) difference frame
Be located on bearing block (54), two belt pulley sets include belt wheel I (55), belt wheel II (56), belt wheel III (57), belt wheel IV (58),
Belt I (59) and belt II (60), belt wheel I (55) are arranged on the first transmission shaft (52), belt wheel II (56) and belt wheel III (57)
It is arranged on second driving shaft (53), belt wheel IV (58) is connected with the main shaft of compression set (7), belt I (59) connection belt wheels I
(55) and belt wheel II (56), belt II (60) connect belt wheel III (57) and belt wheel IV (58).
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| CN106869866A (en) * | 2017-03-17 | 2017-06-20 | 郑州格瑞克石油设备有限公司 | A kind of coal bed methane exploring method |
| CN107632567A (en) * | 2017-09-22 | 2018-01-26 | 山东东山新驿煤矿有限公司 | A kind of automation control system for mine |
| CN108316916B (en) * | 2018-01-15 | 2021-03-26 | 河南理工大学 | Discharge and production pressure drop control simulation test method under different coal reservoir conditions |
| CN110700800A (en) * | 2019-11-20 | 2020-01-17 | 西南石油大学 | Shale gas cluster well gas collection platform process flow and method |
| CN111042775B (en) * | 2019-12-26 | 2022-04-19 | 四川省科源工程技术测试中心 | Device for increasing yield of ultrasonic waves and performing atomization extraction under coal-bed gas well |
| CN113153231A (en) * | 2021-05-12 | 2021-07-23 | 北京杰利阳能源设备制造有限公司 | Negative pressure gas production device |
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| US5688076A (en) * | 1996-09-09 | 1997-11-18 | Atkins; Parker E. | High-vacuum groundwater and soil remediation system and related method and apparatus |
| US8097128B1 (en) * | 2007-06-01 | 2012-01-17 | Sherry Raymond C | Method and apparatus for purifying water |
| CN101182765B (en) * | 2007-12-12 | 2012-05-30 | 中国石油天然气集团公司 | Single well pressure boost gas production device |
| CN202832456U (en) * | 2012-07-26 | 2013-03-27 | 张振荣 | Pressure reduction and yield increase device for natural gas well mouth |
| CN103352686B (en) * | 2013-07-23 | 2015-11-18 | 河南理工大学 | Coal bed gas extraction well well head air water rapidly and efficiently separator |
| CN104763383A (en) * | 2015-03-26 | 2015-07-08 | 成都来宝石油设备有限公司 | Watered gas well pumping device |
| CN205243476U (en) * | 2015-09-14 | 2016-05-18 | 中国石油集团渤海石油装备制造有限公司 | Novel coal bed gas discharging and extracting device |
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