CN200940473Y - Piston and plunger type coal layer gas negative pumping device - Google Patents
Piston and plunger type coal layer gas negative pumping device Download PDFInfo
- Publication number
- CN200940473Y CN200940473Y CN 200620092620 CN200620092620U CN200940473Y CN 200940473 Y CN200940473 Y CN 200940473Y CN 200620092620 CN200620092620 CN 200620092620 CN 200620092620 U CN200620092620 U CN 200620092620U CN 200940473 Y CN200940473 Y CN 200940473Y
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- bed gas
- valve
- coal
- coal bed
- piston
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Abstract
The utility model relates to a piston plunger type coal-bed gas negative pressure drainage device for coal-bed gas or conventional natural gas, which comprises an inlet valve 1, a bypass valve 2, a sensor 3, a filter 4, a special coal-bed gas compressor unit 5, an automatic control holder 6, a cushion valve 7, an exhaust valve 8 and an equipment piping 9. The inlet valve 1, the bypass valve 2, the sensor 3, the filter 4, the special coal-bed gas compressor unit 5, the automatic control holder 6, the cushion valve 7 and the exhaust valve 8 are all connected with the equipment piping 9 through flange. The utility model solves the technical problem that there is no application of using coal-bed gas negative pressure drainage device exploiting the coal-bed gas in domestic. The utility model can be widely used in coal-bed gas and conventional natural gas mining operation.
Description
Technical field:
The utility model relates to piston, the plunger type coal bed gas negative pressure extraction device of a kind of coal bed gas or conventional gas exploitation use.
Background technology:
Coal bed gas is a kind of unconventional natural gas, and it mainly is to give in the coal seam with physical adsorption way.Domestic coal-bed gas exploitation technology is used for reference US experiences mostly, promptly finish and transform the coal seam by fracturing or bore hole cave, strengthen the coal seam permeability, rely on the drainage and step-down mode to impel the desorb of coal bed gas, rely on the coal bed gas of nature of coal seam energy drives desorb to flow to pit shaft then from the coal seam.The key property that China's bed gas reservoir has aspects such as hyposmosis, difficult desorption, driving force deficiency.Because coal bed gas is attached gas, therefore accelerates desorption rate raising methane output and have crucial effects.This device negative pressure pump drainage of evidence not only can be accelerated desorption rate after deliberation, and can rely on the desorbing gas that conventional drainage and step-down can't desorb, improves well yield and recovery ratio effectively, the at present domestic application example report that does not still have similar this device.
Summary of the invention:
The purpose of this utility model provides a kind of piston, plunger type coal bed gas negative pressure extraction device, solve at present domestic does not still have use the limitation problem that the extraction of coal bed gas negative pressure solves coal bed gas routine production technique, carry out the development technique of suitable low pressure, hypotonic, weak moisture coal bed gas.
The technical scheme that its technical problem that solves the utility model adopts is: piston, plunger type coal bed gas negative pressure extraction device, form by admission valve, bypass valve, sensor, strainer, special-purpose coal bed gas compressor unit, automatic control cabinet, trimmer valve, outlet valve, unit piping; Admission valve, bypass valve, sensor, strainer, special-purpose coal bed gas compressor unit, automatic control cabinet, trimmer valve, outlet valve all are connected with the unit piping flange.Most critical is to select special-purpose coal bed gas compressor unit in this device, according to what can produce negative pressure five kinds of piston compressor, liquid rotary compressor, centrifugal compressor, lobed rotor compressor and scroll compressors are arranged, last this device of pluses and minuses contrast through various compressors has been selected the oil-free lubrication piston compressor in the piston compressor for use, it has and is difficult for contaminated environment when compression contains aqueous vapor and other liquid phase gas, only need half a year that bearing is refueled maintenance once, piston ring of replacing in a year.Design parameters is: maximum capacity is 6.75m
3/ min; 20-50 ℃ of the temperature that conforms; Pressure at expulsion≤0.6MPa; Pressure of inspiration(Pi) 〉=0.05-0.5MPa; Maximum energy consumption 11.5KW; Minimum energy dissipation 5.5KW.This device comes into operation behind the coal bed gas well drainage and step-down, generally be used for the individual well well head, the individual well flow process need not to change, inlet with this device during use is connected with gas well mouth sleeve pipe gate valve flange, the outlet of device is connected with well group pipe network or mobile getter device flange, can aspirate operation as shown in Figure 2 after the energising.Notice guaranteeing that the oil jacket annulus liquid level is low more good more, expose payzone as far as possible, in the coal seam, cause negative pressure, accelerate adsorbed gas and separate speed, improve coal bed gas well output.
The beneficial effects of the utility model are, and are simple in structure, easy to use, link to each other and can use with the oil jacket annular space; It has adopted automatic regulating system, can adjust the working method of compressor automatically, has the efficient operation of maintenance state, energy-conservation; Can guarantee extraction efficient and safety in production; This device has explosion-proof and automatic start-stop function.
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram.
Fig. 2 is the utility model and coal bed gas well connection diagram.
Among the figure: 1, admission valve, 2, bypass valve, 3, sensor, 4, strainer, 5, special-purpose coal bed gas compressor unit, 6, controller chassis automatically, 7, trimmer valve, 8, outlet valve, 9, unit piping, 10, coal bed gas well.
The specific embodiment:
In Fig. 1, piston, plunger type coal bed gas negative pressure extraction device are made up of admission valve 1, bypass valve 2, sensor 3, strainer 4, special-purpose coal bed gas compressor unit 5, automatic control cabinet 6, trimmer valve 7, outlet valve 8, unit piping 9; Admission valve 1, bypass valve 2, sensor 3, strainer 4, special-purpose coal bed gas compressor unit 5, automatic control cabinet 6, trimmer valve 7, outlet valve 8 all are connected with unit piping 9 flanges.
In Fig. 2, A be piston,, plunger type coal bed gas negative pressure extraction device, 10 is coal bed gas well, the import of piston, plunger type coal bed gas negative pressure extraction device A is connected with coal bed gas well well head sleeve pipe gate valve, this device A outlet be connected with gas gathering system pipe network flange.
Claims (1)
1, a kind of piston, plunger type coal bed gas negative pressure extraction device are made up of admission valve (1), bypass valve (2), sensor (3), strainer (4), special-purpose coal bed gas compressor unit (5), automatic control cabinet (6), trimmer valve (7), outlet valve (8), unit piping (9); It is characterized in that: admission valve (1), bypass valve (2), sensor (3), strainer (4), special-purpose coal bed gas compressor unit (5), automatic control cabinet (6), trimmer valve (7), outlet valve (8) all are connected with unit piping (9) flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620092620 CN200940473Y (en) | 2006-07-28 | 2006-07-28 | Piston and plunger type coal layer gas negative pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620092620 CN200940473Y (en) | 2006-07-28 | 2006-07-28 | Piston and plunger type coal layer gas negative pumping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200940473Y true CN200940473Y (en) | 2007-08-29 |
Family
ID=38746651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620092620 Expired - Fee Related CN200940473Y (en) | 2006-07-28 | 2006-07-28 | Piston and plunger type coal layer gas negative pumping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200940473Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100248A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Coal bed gas pressure reduction drainage and mining method and device |
| 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 |
-
2006
- 2006-07-28 CN CN 200620092620 patent/CN200940473Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100248A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Coal bed gas pressure reduction drainage and mining method and device |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070829 Termination date: 20100728 |