CN102678092A - Method for commonly extracting coal and coal bed gas by up-hole and down-hole joint construction - Google Patents
Method for commonly extracting coal and coal bed gas by up-hole and down-hole joint construction Download PDFInfo
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- CN102678092A CN102678092A CN2012101639494A CN201210163949A CN102678092A CN 102678092 A CN102678092 A CN 102678092A CN 2012101639494 A CN2012101639494 A CN 2012101639494A CN 201210163949 A CN201210163949 A CN 201210163949A CN 102678092 A CN102678092 A CN 102678092A
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Abstract
The invention relates to a method for commonly extracting coal and coal bed gas by up-hole and down-hole joint construction. The method comprises the following steps: firstly carrying out ground engineering investigation, determining the position of a ground well; carrying out a drilling, well cementing, well finishing and coal reservoir reconstruction technology; discharging and mining coal bed gas for a long time on the ground, and pumping the coal bed gas possibly; carrying out underground well lane engineering on an effect area corresponding to the ground well after the extraction amount of the coal bed gas of a ground coal-bed gas well is reduced to a certain extent; constructing an excavation roadway and a fracture hole of the coal bed in a tunnel by combining the effect range of the ground well; and executing underground pumping of the coal bed gas so as to achieve the purpose of safely mining the coal from the coal bed. According to the method, the ground coal-bed gas well is firstly constructed on a target coal bed to improve the coal reservoir, and the coal bed gas is extracted so as to achieve mining of resource of the coal bed gas by combining an underground fracture strengthening extraction technology of underground roadway engineering construction and achieve extraction up to the standard, thereby outburst hazards of the coal and gas of the target coal bed are removed and finally a virtuous circle mode of mining coal after mining gas in advance is achieved.
Description
Technical field
The present invention relates to a kind of aboveground method that construction coal and coal bed gas are adopted altogether of uniting down.
Background technology
Coal bed gas enrichment region rich coal resources; Brought potential safety hazard for simultaneously the digging of coal resource; Hypotonic in addition, hard-pumped coal seam gives the safety in production of mine with the influence of restriction, and the down-hole coal and rock is anti-reflection, extinction, digging safely and fast are the global problems of generally acknowledging.Because coal rock layer deep well drilling difficulty, there are disasters such as gas exceeding limit, methane accumulation even gas is outstanding when making digging, even drop into substantial contribution; Implement the demand for security that a large amount of borehole engineerings still can not satisfy digging; Moreover borehole engineering makes the workman directly in the face of the outstanding coal body of gas, and personal safety receives very big threat, does not meet the policy requirements of " do not adopt outstanding head, do not dig raised face "; Caused that getting working face efficient is low, drilling depth is few; Making the digging serious disproportion has influenced the integral body deployment of coal mining enterprise, has wasted a large amount of clear energy sourcess simultaneously.Be the coal bed gas extraction that solves the gas enrichment region, the safe digging of coal resources, the coal scientific research personnel has carried out big quantity research both at home and abroad, has successively implemented ground coal bed gas well pressure break, ground open hole well, surface well injection N
2Or CO
2Come gas displacing coal-bed; The down-hole adopts intensive boring, hydraulic flushing in hole, waterpower slotting, hydraulic loose, deep hole loosening blasting, coal-bed flooding etc. to improve the enhancements of coal seam reservoirs; Reached certain effect, in certain zone, realized the back production of coal resources safety, coal-bed gas exploitation from present effect, but as a whole; Ground coal bed gas well no matter, perhaps down-hole coal bed gas extraction all fail to obtain ideal effect.
Summary of the invention
The objective of the invention is to solve the present situation of hypotonic hard-pumped coal bed gas enrichment region coal bed gas, coal resources digging difficulty; Thereby a kind of aboveground method that construction coal and coal bed gas are adopted altogether of uniting down is provided, and this method can be prevented and treated coal and digging is safely and fast given prominence to, realized to gas.
The present invention provides a kind of construction coal and common mining method of coal bed gas of uniting under aboveground for solving the problems of the technologies described above, and the step of this method is following:
1). confirm the well location of hypotonic hard-pumped coal bed gas enrichment region through engineering investigation;
2). this well location is implemented drilling well, well cementation, completion and the coal seam reservoirs transformation of coal bed gas well;
3). the well head extraction coal bed gas on ground makes the coal bed gas desorb;
4). after ground coal bed gas well extraction amount narrows down to certain value, the underworkings pressure break hole and the well lane engineering of this coal bed gas well of constructing;
5). the influence basin of combined ground well, down-hole extraction coal bed gas is implemented in the pressure break hole in this coal seam of construction in the tunnel, makes this coal seam reach the purpose of safe digging coal.
Said step 2) can pass through pressure break, perforation, jetting, ground open hole well, surface well injection N
2Or CO
2Coming gas displacing coal-bed and so on technology to accomplish transforms coal seam reservoirs.
The row who uses during well head extraction coal bed gas on ground in the said step 3) adopts equipment and is screw pump or electric submersible pump etc.
Construction underworkings engineering in the described step 4) is to carry out in the corresponding influence area of surface well, and through construction driving, this pressure break hole, coal seam, down-hole row's mining coal seam gas is to guarantee the safety of tunnelling.
The invention has the beneficial effects as follows: this method is improved coal seam reservoirs through the ground coal bed gas well of constructing in target coal seam in advance; The extraction coal bed gas; In to the coal resources mining process, utilize the effect of ground coal bed gas well to combine underworkings engineering construction underground fracture to strengthen the exploitation that the extraction technology realizes coal bed gas resource; Accomplish that extraction is up to standard, the coal of extinction target coal seam and gas outburst risk finally reach the benign cycle pattern of mining after the first gas production.
Description of drawings
Fig. 1 is the integral construction arrangement diagram in the embodiment of the invention.
The specific embodiment
Further specify below in conjunction with the accompanying drawing specific embodiments of the invention.
What the present invention is directed to is the coal bed gas of hypotonic hard-pumped coal bed gas enrichment region and the exploitation of coal resources, and the concrete steps of this method are following:
1. at first carry out engineering investigation to confirm well location at hypotonic hard-pumped coal bed gas enrichment region.
2. construct according to definite good well location, implement drilling well, well cementation, completion and the coal seam reservoirs transformation of coal bed gas well, for example fracturing, acidifying technology, bore hole cave well, air are made cave, N
2Or CO
2Technology such as pressure break improve coal seam reservoirs, finally accomplish coal bed gas well A.
3. well head uses row to adopt equipment such as screw pump or electric submersible pump etc. to carry out coal bed gas row and adopt on ground, and extraction coal bed gas as much as possible makes the coal bed gas desorb.
4. ground coal bed gas well A is being exploited a period of time; After making ground coal bed gas well A extraction amount narrow down to certain value; The underworkings engineering is implemented in influence area to coal bed gas well A is corresponding; According to down-hole coal bed gas disaster degree, select construction driving pressure break hole B and down-hole row's mining coal seam gas to reach anti-reflection extinction, guarantee the safety driving in tunnel.
5. this pressure break hole, coal seam C constructs in the tunnel; The effect of combined ground well reservoir reconstruction utilizes down-hole extraction system to implement down-hole extraction coal bed gas, and it is outstanding to eliminate coal and gas; Make this coal seam reach the purpose of safe digging coal, for the digging of coal resources provides safety guarantee.
6. utilize the coal mining technology the improved coal seam of process above-mentioned steps to be exploited, reach the purpose that adopt altogether in coal and coal seam along the tunnel.
The present invention improves coal seam reservoirs through the ground coal bed gas well of constructing in target coal seam in advance; The extraction coal bed gas; In to the coal resources mining process, utilize the effect of ground coal bed gas well to combine underworkings engineering construction underground fracture to strengthen the exploitation that the extraction technology realizes coal bed gas resource; Accomplish that extraction is up to standard, the coal of extinction target coal seam and gas outburst risk finally reach the benign cycle pattern of mining after the first gas production.
Claims (4)
1. abovegroundly unite down the method that construction coal and coal bed gas are adopted altogether for one kind, it is characterized in that: the step of this method is following:
1). confirm the well location of hypotonic hard-pumped coal bed gas enrichment region through engineering investigation;
2). this well location is implemented drilling well, well cementation, completion and the coal seam reservoirs transformation of coal bed gas well;
3). the well head extraction coal bed gas on ground makes the coal bed gas desorb;
4). after ground coal bed gas well extraction amount narrows down to certain value, the underworkings pressure break hole and the well lane engineering of this coal bed gas well of constructing;
5). the influence basin of combined ground well, down-hole extraction coal bed gas is implemented in the pressure break hole in this coal seam of construction in the tunnel, makes this coal seam reach the purpose of safe digging coal.
2. the aboveground method that construction coal and coal bed gas are adopted altogether of uniting down according to claim 1 is characterized in that: said step 2) can pass through pressure break, perforation, jetting, ground open hole well, surface well injection N
2Or CO
2Coming gas displacing coal-bed and so on technology to accomplish transforms coal seam reservoirs.
3. the aboveground method that construction coal and coal bed gas are adopted altogether of uniting down according to claim 1 is characterized in that: the row who uses during well head extraction coal bed gas on ground in the said step 3) adopts equipment and is screw pump or electric submersible pump etc.
4. the aboveground method that construction coal and coal bed gas are adopted altogether of uniting down according to claim 1; It is characterized in that: the construction underworkings engineering in the described step 4) is to carry out in the corresponding influence area of surface well, and arranges mining coal seam gas to guarantee the safety of tunnelling through construction driving, this pressure break hole, coal seam and down-hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210163949.4A CN102678092B (en) | 2012-04-01 | 2012-05-24 | A kind ofly abovegroundly combine construction coal and the coal bed gas method of adopting altogether down |
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| CN201210095635 | 2012-04-01 | ||
| CN201210095635.5 | 2012-04-01 | ||
| CN2012100956355 | 2012-04-01 | ||
| CN201210163949.4A CN102678092B (en) | 2012-04-01 | 2012-05-24 | A kind ofly abovegroundly combine construction coal and the coal bed gas method of adopting altogether down |
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| CN102678092A true CN102678092A (en) | 2012-09-19 |
| CN102678092B CN102678092B (en) | 2015-09-16 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806217A (en) * | 2015-03-20 | 2015-07-29 | 河南理工大学 | Combined separated layer fracturing, grouping and layer-combining mining method for coal bed well group |
| CN105064969A (en) * | 2015-08-19 | 2015-11-18 | 山西鸿海科贸有限公司 | Fracturing method capable of preventing induction outburst |
| CN105927192A (en) * | 2016-06-21 | 2016-09-07 | 太原理工大学 | Method for exploiting coal bed methane in collapse old goafs and lower coal beds in combined manner |
| CN105927191A (en) * | 2016-06-21 | 2016-09-07 | 太原理工大学 | Method for combined mining of coal seam gas of cutter column type old goaf and lower coal seam |
| CN105971563A (en) * | 2016-06-21 | 2016-09-28 | 太原理工大学 | Extraction method for coal bed gas in composite old mined-out area formed through lower tool post method |
| CN106014345A (en) * | 2016-06-21 | 2016-10-12 | 太原理工大学 | Extraction method for mining formed composite goaf coalbed methane through lower caving method |
| CN106437823A (en) * | 2015-08-12 | 2017-02-22 | 陈信平 | Method for eliminating coal mine gas explosion, burst and exceeding |
| CN107905832A (en) * | 2017-11-06 | 2018-04-13 | 北京九尊能源技术股份有限公司 | The outburst elimination method of pump drainage is combined on a kind of nitrogen pressure break and ground with underground |
| CN111058891A (en) * | 2019-12-11 | 2020-04-24 | 煤炭科学技术研究院有限公司 | Method for replacing and extracting coal seam gas in underground and aboveground modes |
| CN112112635A (en) * | 2020-10-09 | 2020-12-22 | 吕梁学院 | Coal-bed gas well shaft leakage detection device and operation method thereof |
| CN113530539A (en) * | 2021-08-02 | 2021-10-22 | 北京中矿创新联盟能源环境科学研究院 | Intelligent N00 mine gas simultaneous mining method |
| CN114320440A (en) * | 2021-11-29 | 2022-04-12 | 淮北矿业股份有限公司 | Up-down combined extraction method for well |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806217B (en) * | 2015-03-20 | 2017-03-22 | 河南理工大学 | Combined separated layer fracturing, grouping and layer-combining mining method for coal bed well group |
| CN104806217A (en) * | 2015-03-20 | 2015-07-29 | 河南理工大学 | Combined separated layer fracturing, grouping and layer-combining mining method for coal bed well group |
| CN106437823A (en) * | 2015-08-12 | 2017-02-22 | 陈信平 | Method for eliminating coal mine gas explosion, burst and exceeding |
| CN105064969A (en) * | 2015-08-19 | 2015-11-18 | 山西鸿海科贸有限公司 | Fracturing method capable of preventing induction outburst |
| CN106014345B (en) * | 2016-06-21 | 2018-11-13 | 太原理工大学 | A kind of lower part caving method exploits the pumping method for the compound old dead zone coal bed gas to be formed |
| CN105927192A (en) * | 2016-06-21 | 2016-09-07 | 太原理工大学 | Method for exploiting coal bed methane in collapse old goafs and lower coal beds in combined manner |
| CN105927191A (en) * | 2016-06-21 | 2016-09-07 | 太原理工大学 | Method for combined mining of coal seam gas of cutter column type old goaf and lower coal seam |
| CN105971563A (en) * | 2016-06-21 | 2016-09-28 | 太原理工大学 | Extraction method for coal bed gas in composite old mined-out area formed through lower tool post method |
| CN106014345A (en) * | 2016-06-21 | 2016-10-12 | 太原理工大学 | Extraction method for mining formed composite goaf coalbed methane through lower caving method |
| CN107905832A (en) * | 2017-11-06 | 2018-04-13 | 北京九尊能源技术股份有限公司 | The outburst elimination method of pump drainage is combined on a kind of nitrogen pressure break and ground with underground |
| CN111058891A (en) * | 2019-12-11 | 2020-04-24 | 煤炭科学技术研究院有限公司 | Method for replacing and extracting coal seam gas in underground and aboveground modes |
| CN112112635A (en) * | 2020-10-09 | 2020-12-22 | 吕梁学院 | Coal-bed gas well shaft leakage detection device and operation method thereof |
| CN112112635B (en) * | 2020-10-09 | 2022-10-18 | 吕梁学院 | Coal-bed gas well shaft leakage detection device and operation method thereof |
| CN113530539A (en) * | 2021-08-02 | 2021-10-22 | 北京中矿创新联盟能源环境科学研究院 | Intelligent N00 mine gas simultaneous mining method |
| CN113530539B (en) * | 2021-08-02 | 2024-02-20 | 北京中矿创新联盟能源环境科学研究院 | Intelligent N00 mine gas simultaneous production method |
| CN114320440A (en) * | 2021-11-29 | 2022-04-12 | 淮北矿业股份有限公司 | Up-down combined extraction method for well |
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