CN103352682B - Pulse electromagnetic improves the method for coal bed gas extraction rate - Google Patents
Pulse electromagnetic improves the method for coal bed gas extraction rate Download PDFInfo
- Publication number
- CN103352682B CN103352682B CN201310312534.3A CN201310312534A CN103352682B CN 103352682 B CN103352682 B CN 103352682B CN 201310312534 A CN201310312534 A CN 201310312534A CN 103352682 B CN103352682 B CN 103352682B
- Authority
- CN
- China
- Prior art keywords
- coal
- bed gas
- battery lead
- lead plate
- electromagnetic
- 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.)
- Expired - Fee Related
Links
Abstract
The invention discloses a kind of method that pulse electromagnetic improves coal bed gas extraction rate, by effect coal body is carried out pulse electromagnetic wave test experiments, obtain the electromagnetic intensity needed for final scene and frequency parameter, then, the battery lead plate that feeder line connects is put in the sleeve pipe in mash gas pumping drilling, in battery lead plate, form high intensity pulses electromagnetic wave by pulse electromagnetic field generator, complete the Electromagnetic Field to coal seam.Its mode is simple to operate, easy to use, flexible, and sphere of action is wide, is affected less by tunnel or ground surface environment, and the gas permeability of coal seam after effect is obviously improved, and creates advantage for coal bed gas drainage.
Description
Technical field
The present invention relates to a kind of method utilizing pulse electromagnetic to improve coal bed gas extraction rate, belong to colliery skill
Art field.
Background technology
China Coal Bed Methane Resource enriches, and cbm development and utilization have long-range prospect.But, CHINESE COAL
Layer gas Ground Developing has just enter into the starting stage, and China's coal field geology condition is more complicated, many containing coal area
Geological conditions is clearly distinguishable from the U.S. and the most successfully develops the geological conditions in coalfield.The many tools of China's coalbed methane reservoir
The feature of " three low one is high ": coal bed gas pressure is low, coalbed methane reservoir permeability is low, fracturing strengthening
Forming routine under measure, to rupture crack proportion low, it addition, the coal seam of China's high methane content generally has
There is higher absorbability.
In China's cbm development experimental work, CBM Drilling and gas production test expose some and ask
Topic, many key technologies are to be resolved.Wherein, shown by test data: China's coal seam permeability
The most relatively low, it is lower that underground coal mine measures breathability.This opens to China's mining of coal bed gas and commerciality
Send out and bring bigger difficulty, it addition, major part this coal seam of underground coal mine is due to poor air permeability, gas drainage under suction
Effect is undesirable, although this coal seam takes hydraulic slotted liner technique, Deephole pre-splitting blasting, cross borehole etc. each
Plant anatonosis measure, and bring certain effect, but its applicable elements has certain limitation.
Generally, coal bed gas drainage process need to experience desorption of mash gas-three, diffusion-seepage flow cascade process, appoints
The speed of what process all can affect whole gas drainage results.Therefore, effectively facilitate desorbing, spread and ooze
Flow through journey, improve coal seam transport characteristics, just become colliery scene and cbm development needs the primary of solution badly
Problem.
Test and shown: additional electromagnetic field can promote the desorption of mash gas of coal containing methane gas and the infiltration in coal seam
Rate improves, the electromagnetic equipment that can use but without scene.Therefore, research one can be answered at the scene
Electromagnetic technique and method, just become the present invention want solve subject matter.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, it is desirable to provide one utilizes pulse electromagnetic wave to high watt
This coal seam carries out breathability process, to realize improving gas permeability of coal seam, the mesh of raising coal bed gas extraction rate
's.
Patent of the present invention is achieved through the following technical solutions:
A kind of method of pulse electromagnetic raising coal bed gas extraction rate, first, will at coal mine ground or down-hole
Sleeve pipe is inserted in mash gas pumping drilling, by battery lead plate by feeder line and cymometer, oscillograph and pulse electricity
Magnetic field generator is linked in sequence, and then, is put into by battery lead plate in sleeve pipe, battery lead plate and effect coal seam phase
Corresponding；Then, regulation and control operating impulse electromagnetic field generator, by cymometer, oscillograph to output electricity
Frequency and the waveform of magnetic wave are monitored, and complete the effect to coal seam of the high intensity pulses electromagnetic wave；Finally,
Extract battery lead plate, coal bed gas drainage after sealing of hole, can be carried out.
A kind of pulse electromagnetic improves the method for coal bed gas extraction rate, also includes: the coal body to needs effect
Carry out early stage mensuration, to determine in effect coal body containing electrical parameters such as gas body dielectric constant, electrical conductivity,
Obtain electromagnetic wave propagation wherein and attenuation characteristic, and determine electromagnetic field according to operating distance and scope
The parameters such as action intensity, frequency, time.
Described feeder line is mine special anti-explosion feeder line.
Pulse electromagnetic of the present invention improves the method for coal bed gas extraction rate, by effect coal body
Carry out pulse electromagnetic wave test experiments, obtain electromagnetic wave propagation law in coal and rock and attenuation characteristic,
Determine sphere of action and the action effect of pulse electromagnetic wave, and finally need to obtain according to scene required
Electromagnetic intensity and frequency parameter, by concrete pulse electromagnetic field generator, oscillograph, cymometer,
Battery lead plates etc. complete the high intensity pulses Electromagnetic Field to coal seam, and the gas permeability of coal seam after effect substantially changes
Kind, create advantage for follow-up coal bed gas drainage.Its mode is simple to operate, easy to use, clever
Living, sphere of action is wide, is affected less by tunnel or ground surface environment, can significantly improve the extraction of coal-bed gas
Efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
As a example by downhole electromagnetic ripple effect, as it is shown in figure 1, pulse electromagnetic of the present invention improves coal seam watt
The method of this extraction rate, concrete steps include:
First, needs effect coal body 7 is carried out early stage mensuration, be situated between containing gas body to determine in effect coal body 7
The electrical parameter such as electric constant, electrical conductivity, obtains electromagnetic wave propagation wherein and attenuation characteristic, and according to
The operating distance being actually needed and sphere of action determine the ginsengs such as electromagnetic field effect intensity, frequency, time
Number.
In process of the test, great many of experiments test and data comparative analysis need to be carried out, with the work of clear and definite electromagnetic wave
By mechanism, for the use based theoretical of field apparatus.
Then, in underworkings, sleeve pipe 6 is inserted in transversely arranged mash gas pumping drilling, so
After, battery lead plate 5 is connected with cymometer 3, oscillograph 2 and pulse electromagnetic field generator 1 order by feeder line 4
Connecing, then put into by battery lead plate 5 in sleeve pipe 6, the position that battery lead plate 5 is put into is corresponding with effect coal seam.
Feeder line 4 uses mine special anti-explosion feeder line, has certain intensity and toughness, solid, durable.
Battery lead plate 5 is can produce stable, reliable high intensity pulses as standard.
Followed by, according to experimental result, operating impulse electromagnetic field generator 1, regulation and control electromagnetic wave is to corresponding
In intensity, frequency, and keep corresponding action time, coal seam is carried out high intensity pulses electromagnetic wave work
With.In mechanism, by cymometer 3, oscillograph 2, frequency and the waveform of output electromagnetic wave are supervised
Control, to ensure accuracy and the reliability that coal seam acts on by high intensity pulses electromagnetic wave.
Finally, extract battery lead plate 5, coal bed gas drainage after sealing of hole, can be carried out.
Being acted on by high intensity pulses electromagnetic wave, effect gas permeability of coal seam is obviously improved, and efficiently takes out for follow-up
Coal-bed gas is sent to create advantage.
Claims (2)
1. the method that a pulse electromagnetic improves coal bed gas extraction rate, it is characterised in that first, to needing
Coal body to be acted on carries out early stage mensuration, to determine in effect coal body containing gas body dielectric constant and conductance
Rate, obtains electromagnetic wave propagation wherein and attenuation characteristic, and determines electricity according to operating distance and scope
The action of a magnetic field intensity, frequency and time parameter；Then, insert the cannula into watt at coal mine ground or down-hole
In this extraction borehole, battery lead plate is suitable with cymometer, oscillograph and pulse electromagnetic field generator by feeder line
Sequence connects, and then, is put into by battery lead plate in sleeve pipe, and battery lead plate is corresponding with effect coal seam；Then,
Regulation and control and operating impulse electromagnetic field generator, by cymometer, oscillograph to output electromagnetic wave frequency and
Waveform is monitored, and completes the effect to coal seam of the high intensity pulses electromagnetic wave；Finally, extract battery lead plate,
Coal bed gas drainage can be carried out after sealing of hole.
Pulse electromagnetic the most according to claim 1 improves the method for coal bed gas extraction rate, its feature
Being, described feeder line is mine special explosion-proof type feeder line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310312534.3A CN103352682B (en) | 2013-07-24 | 2013-07-24 | Pulse electromagnetic improves the method for coal bed gas extraction rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310312534.3A CN103352682B (en) | 2013-07-24 | 2013-07-24 | Pulse electromagnetic improves the method for coal bed gas extraction rate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103352682A CN103352682A (en) | 2013-10-16 |
| CN103352682B true CN103352682B (en) | 2016-08-24 |
Family
ID=49309089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310312534.3A Expired - Fee Related CN103352682B (en) | 2013-07-24 | 2013-07-24 | Pulse electromagnetic improves the method for coal bed gas extraction rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103352682B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758498B (en) * | 2014-01-26 | 2016-04-06 | 安徽理工大学 | A kind of method and device improving drilling gas extraction efficiency |
| CN107489444B (en) * | 2017-09-08 | 2019-11-12 | 中国神华能源股份有限公司 | A kind of gas channel forming method for the formation gas channel in coal seam |
| CN108757008B (en) * | 2018-05-14 | 2019-11-26 | 华北科技学院 | A method of this coal bed gas drainage efficiency is improved using magnetic fluid |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6227293B1 (en) * | 2000-02-09 | 2001-05-08 | Conoco Inc. | Process and apparatus for coupled electromagnetic and acoustic stimulation of crude oil reservoirs using pulsed power electrohydraulic and electromagnetic discharge |
| CN1305047A (en) * | 2000-12-26 | 2001-07-25 | 西南石油学院 | Ultrasonic water draining method for recovering gas |
| RU2298090C1 (en) * | 2006-03-06 | 2007-04-27 | Михаил Григорьевич Падерин | Method and device to apply gas-dynamic action to formation |
| CN101644166A (en) * | 2009-07-14 | 2010-02-10 | 中国矿业大学 | Method for extracting gas from high gas low permeability coal seam by punching, slotting, pressure releasing, and permeability increasing |
| CN201778710U (en) * | 2010-09-04 | 2011-03-30 | 山东拓普石油装备有限公司 | High-power ultrasonic oil formation treatment system |
| CN102373908A (en) * | 2011-10-08 | 2012-03-14 | 龚大建 | Underground ultrasonic yield-increasing pumping device for coalseam gas |
| CN103061797A (en) * | 2012-12-24 | 2013-04-24 | 孙利民 | Method and device for increasing the coal mine gas drainage efficiency |
-
2013
- 2013-07-24 CN CN201310312534.3A patent/CN103352682B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6227293B1 (en) * | 2000-02-09 | 2001-05-08 | Conoco Inc. | Process and apparatus for coupled electromagnetic and acoustic stimulation of crude oil reservoirs using pulsed power electrohydraulic and electromagnetic discharge |
| CN1305047A (en) * | 2000-12-26 | 2001-07-25 | 西南石油学院 | Ultrasonic water draining method for recovering gas |
| RU2298090C1 (en) * | 2006-03-06 | 2007-04-27 | Михаил Григорьевич Падерин | Method and device to apply gas-dynamic action to formation |
| CN101644166A (en) * | 2009-07-14 | 2010-02-10 | 中国矿业大学 | Method for extracting gas from high gas low permeability coal seam by punching, slotting, pressure releasing, and permeability increasing |
| CN201778710U (en) * | 2010-09-04 | 2011-03-30 | 山东拓普石油装备有限公司 | High-power ultrasonic oil formation treatment system |
| CN102373908A (en) * | 2011-10-08 | 2012-03-14 | 龚大建 | Underground ultrasonic yield-increasing pumping device for coalseam gas |
| CN103061797A (en) * | 2012-12-24 | 2013-04-24 | 孙利民 | Method and device for increasing the coal mine gas drainage efficiency |
Non-Patent Citations (3)
| Title |
|---|
| 在交变电场声场作用下煤解吸吸附瓦斯特性分析;易俊等;《中国矿业》;20050515;第14卷(第5期);第71页，图1 * |
| 外加电磁场对瓦斯吸附解吸的影响规律及作用机理的研究;何学秋等;《煤炭学报》;20001225;第25卷(第6期);第614页，图1 * |
| 正弦波电磁场对瓦斯吸附常数的影响规律;何学秋;《中国矿业大学学报》;20030930;第32卷(第5期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103352682A (en) | 2013-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104863628B (en) | One kind utilizes the anti-reflection shielding coal roadway tunneling method of pulse detonation wave fracturing | |
| CN105201481B (en) | Liquid CO2Phase transformation multiple spot fracturing anti-reflection method | |
| AU2015391205B2 (en) | Downhole coal seam pulse detonation wave directional fracturing permeability-increasing method | |
| CN104481574B (en) | A kind of method utilizing high energy acoustic-electric complex technique to improve gas permeability of coal seam | |
| CN101338999B (en) | Method for blasting seepage enhancement for low infiltration sandrock -type uranium deposit | |
| CN104314606B (en) | Hydraulic slotted liner technique and the combined reinforced pumping method of gas explosion fracturing coal body in a kind of boring | |
| CN105370257B (en) | A kind of coal bed gas well high power electric detonation shake auxiliary hydraulic fracturing method for increasing | |
| CN102720528B (en) | Underground coal mine repeating pulsation hydrofracture strengthened gas extracting method | |
| CN103114871A (en) | Extraction device and method utilizing microwave coal heating layer | |
| CN105484720A (en) | Microwave-assisted extraction and hydrofracture cooperative coal seam anti-reflection method | |
| CN101915085B (en) | Low-air-permeability coal-bed gas extraction method | |
| CN103498680B (en) | Improve the method for fully mechanized coal face period of beginning mining top-coal recovery rate | |
| CN106837264B (en) | Downhole casing perforating gun control system and control method | |
| CN103195390A (en) | Mining-coal bed nearly horizontal gas extraction borehole sealing method | |
| CN104989339A (en) | Old goaf coalbed methane extracting and mining system and method | |
| CN105178933A (en) | Environmental protection type under-well formation fracturing device | |
| CN108180035B (en) | Gas extraction method for combined operation of drilling and permeability increasing of high-gas low-permeability coal seam | |
| CN103352682B (en) | Pulse electromagnetic improves the method for coal bed gas extraction rate | |
| CN105201483A (en) | Environment-friendly downhole stratum fracturing method | |
| CN102296982A (en) | Method for electrochemically strengthening desorption and seepage of coal gas | |
| Geng et al. | Theory and technique of permeability enhancement and coal mine gas extraction by fracture network stimulation of surrounding beds and coal beds | |
| CN106523025A (en) | Microwave system facilitating coal mass gas desorption | |
| CN107339091B (en) | Method for artificially building underground oil shale crushed body | |
| CN105019935A (en) | Overground/underground combined pressure relief outburst elimination coal seam rapid channel digging method | |
| Miao et al. | Development status and prospect of staged fracturing technology in horizontal wells |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20170724 |