CN111350483A - Low-cost coal and gas co-production system - Google Patents
Low-cost coal and gas co-production system Download PDFInfo
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- CN111350483A CN111350483A CN202010329879.XA CN202010329879A CN111350483A CN 111350483 A CN111350483 A CN 111350483A CN 202010329879 A CN202010329879 A CN 202010329879A CN 111350483 A CN111350483 A CN 111350483A
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- 239000003245 coal Substances 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 238000000605 extraction Methods 0.000 claims abstract description 26
- 238000005553 drilling Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 6
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000000658 coextraction Methods 0.000 abstract description 6
- 238000003795 desorption Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 238000009412 basement excavation Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 46
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/006—Production of coal-bed methane
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- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
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- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a low-cost coal and gas co-production system, which aims to solve the problem of high cost in the conventional coal and gas co-production. This product is including sending and splitting ware and hole sealing device, send the quantity of splitting the ware for a plurality of and send and split the ware and all fix in drilling, a plurality of send and split the ware and link to each other in proper order, hole sealing device with send and split the ware and be connected, can seal drilling, the one end of hole sealing device is connected with draws forth the pole, draw forth and be fixed with the start-up generating line that links to each other with the pressure pipeline on the pole. The product utilizes an anti-reflection desorption technology to realize gas high-concentration and high-flow extraction in a coal seam, the lower extraction limit is reduced to below 8 m/t, the single-hole extraction efficiency is improved by 10-25 times, the extraction period is greatly shortened, and low-cost coal and gas co-extraction is realized; the product can continuously and rapidly tunnel coal and gas outburst mines by using an anti-reflection displacement technology, realizes low-gas operation in the coal seam, safely and effectively relieves the 'gas outburst source' in the coal seam, improves the excavation efficiency by 5-10 times, and greatly shortens the excavation connection period.
Description
Technical Field
The invention relates to the field of coal and gas exploitation, in particular to a low-cost coal and gas co-exploitation system.
Background
Coal is a combustible black or brownish black sedimentary rock that typically occurs in rock formations or veins known as coal beds or beds. Coal is composed primarily of carbon, as well as various amounts of other elements, primarily hydrogen, sulfur, oxygen, and nitrogen. Historically, coal has been used as an energy resource, primarily for combustion to produce electricity and/or heat, and also for industrial uses, such as refining metals, or producing fertilizers and many chemical products.
Coal is required to be mined from a coal bed, not only is coal present in the coal bed, but also a large amount of gas exists in the coal bed, the gas is important energy for life and production and is also required to be mined, and although the conventional mining mode can realize the co-mining of the coal and the gas, the mining cost is high.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a low-cost coal and gas co-production system to solve the problems in the background art.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a low-cost coal and gas co-production system comprises a plurality of fracturing devices and a hole sealing device, wherein the fracturing devices are fixed in a drill hole, the fracturing devices are sequentially connected, the hole sealing device is connected with the fracturing devices and can seal the drill hole, one end of the hole sealing device is connected with a leading-out rod, a starting bus connected with a pressure pipeline is fixed on the leading-out rod, the product is installed between a bottom plate and a top plate, the pressure pipeline in the drill hole is tested and the starting bus is led out, the leading-out rod is pushed so as to lead out the starting bus, when the leading-out rod is pushed to meet the designed hole sealing depth, the leading-out rod is not pushed any more, after the resistance of the starting bus is stable, the pressure pipeline is connected with a water injection pressure pump to pressurize the hole sealing device in the drill hole, and after the pressure of the hole sealing device reaches 4-6MPa, the leading-out rod is stressed so as to ensure that the fracturing, and then starting the fracturing device, releasing the gaseous fracturing medium, detecting the gas concentration near the drill hole after the fracturing is completed for at least 30 minutes, dismantling the fracturing device after safety is ensured, and then using the drill hole for drainage to perform hole sealing and continuous drainage. The product utilizes an anti-reflection desorption technology to realize high-concentration and high-flow gas extraction in a coal bed, the lower extraction limit is reduced to below 8 m/t, the single-hole extraction efficiency is improved by 10-25 times, the extraction period is greatly shortened, and low-cost coal and gas co-extraction is realized. The anti-reflection displacement technology is applied to continuously and rapidly tunnel coal and gas outburst mines, low-gas operation is realized in the coal seam, the gas outburst source in the coal seam is safely and effectively relieved, the excavating efficiency is improved by 5-10 times, and the excavating connection period is greatly shortened.
As a further scheme of the embodiment of the invention: the drawing rod is fixed in the roadway through the fixing piece, so that the drawing rod is guaranteed not to move in the working process, and the normal work of the fracturing device is guaranteed.
As a further scheme of the embodiment of the invention: the fracturing devices are connected through the connecting piece, the connection firmness is good, and the fracturing devices are not easy to loosen in the using process.
As a further scheme of the embodiment of the invention: the fracturing device comprises a main body, an energy release valve, an inflation valve and a heating device, wherein the heating device is fixed in the main body, and the main body adopts a closed structure, so that the fracturing device is simple in structure and good in using effect.
As a further scheme of the embodiment of the invention: the main body is made of stainless steel materials, raw materials are easy to obtain, the processing is convenient, and the using effect is good.
As a further scheme of the embodiment of the invention: be provided with the recess on the connecting piece, send and be provided with the arch on the ware that splits, send the ware that splits to fasten with the connecting piece through the cooperation of arch and recess, difficult pine takes off.
As a further scheme of the embodiment of the invention: the leading-out rod is made of cast iron material, has low cost and can be repeatedly used.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
the product is reasonable in design, through the matching of the fracturing device, the hole sealing device, the starting bus and other parts, the permeability increasing and desorption technology is utilized, the high-concentration and high-flow gas extraction is realized in the coal seam, the lower extraction limit is reduced to below 8m year/t, the single-hole extraction efficiency is improved by 10-25 times, the extraction period is greatly shortened, and the low-cost coal and gas co-extraction is realized;
the product can be used for continuously and rapidly tunneling coal and gas outburst mines by applying an anti-reflection displacement technology, low-gas operation is realized in the coal seam, the gas outburst source in the coal seam is safely and effectively relieved, the excavation efficiency is improved by 5-10 times, the excavation connection period is greatly shortened, and the application prospect is wide.
Drawings
FIG. 1 is a schematic diagram of a low cost coal and gas co-production system.
Wherein: 1-fracturing device, 2-connecting piece, 3-hole sealing device, 4-leading-out rod, 5-fixing piece, 6-roadway, 7-bottom plate, 8-top plate and 9-drilling hole.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Example 1
A low-cost coal and gas co-production system comprises a plurality of fracturing devices 1 and a hole sealing device 3, wherein the fracturing devices 1 are fixed in a drill hole 9, the fracturing devices 1 are sequentially connected, the hole sealing device 3 is connected with the fracturing devices 1 and can seal the drill hole 9, one end of the hole sealing device 3 is connected with a leading-out rod 4, a starting bus connected with a pressure pipeline is fixed on the leading-out rod 4, the product is installed between a bottom plate 7 and a top plate 8, the pressure pipeline in the drill hole 9 is tested and the starting bus is led out, the leading-out rod 4 is pushed so as to lead out the starting bus, when the leading-out rod 4 is pushed to a designed hole sealing depth, the leading-out rod 4 is not pushed any more, after the resistance of the starting bus is ensured to be stable, the pressure pipeline is connected with a water injection pressure pump, the hole sealing device 3 in the drill hole 9 is pressurized, and the pressure of the hole sealing device 3 reaches 4-6MPa, stress is applied to the leading-out rod 4 to ensure that the fracturing device 1 is completely fixed, then the fracturing device 1 is started to release gaseous fracturing media, after fracturing is completed for at least 30 minutes, the gas concentration near the drill hole 9 is detected, the fracturing device 1 is dismantled after safety is ensured, and then the drill hole 9 is used for drainage and hole sealing continuous drainage. The product utilizes an anti-reflection desorption technology to realize high-concentration and high-flow gas extraction in a coal bed, the lower extraction limit is reduced to below 8 m/t, the single-hole extraction efficiency is improved by 10-25 times, the extraction period is greatly shortened, and low-cost coal and gas co-extraction is realized. The anti-reflection displacement technology is applied to continuously and rapidly tunnel coal and gas outburst mines, low-gas operation is realized in the coal seam, the gas outburst source in the coal seam is safely and effectively relieved, the excavating efficiency is improved by 5-10 times, and the excavating connection period is greatly shortened.
In order to ensure that the leading-out rod 4 cannot move in the working process, the leading-out rod 4 is fixed in the roadway 6 through the fixing piece 5, and the normal work of the fracturing device is ensured.
Further, be provided with the recess on the connecting piece 2, send and be provided with the arch on splitting the ware 1, send splitting the ware 1 and fasten with connecting piece 2 through the cooperation of arch and recess, difficult pine takes off.
Furthermore, the leading-out rod 4 is made of cast iron materials, is low in price and can be repeatedly used.
The product of the example is adopted in the Guizhou green pond coal mine of the Shandong energy group, 50 holes are fractured together, the highest concentration after fracturing is 95.3%, the highest purity is 1.06 m/min, the fracturing radius can reach more than 3 m, the gas extraction efficiency is improved by more than 35 times compared with that of a non-fracturing area, and the gas utilization rate can reach more than 91%.
Example 2
A low-cost coal and gas co-production system comprises a plurality of fracturing devices 1 and a hole sealing device 3, wherein the fracturing devices 1 are fixed in a drill hole 9, the fracturing devices 1 are sequentially connected, the hole sealing device 3 is connected with the fracturing devices 1 and can seal the drill hole 9, one end of the hole sealing device 3 is connected with a leading-out rod 4, a starting bus connected with a pressure pipeline is fixed on the leading-out rod 4, the product is installed between a bottom plate 7 and a top plate 8, the pressure pipeline in the drill hole 9 is tested and the starting bus is led out, the leading-out rod 4 is pushed so as to lead out the starting bus, when the leading-out rod 4 is pushed to a designed hole sealing depth, the leading-out rod 4 is not pushed any more, after the resistance of the starting bus is ensured to be stable, the pressure pipeline is connected with a water injection pressure pump, the hole sealing device 3 in the drill hole 9 is pressurized, and the pressure of the hole sealing device 3 reaches 4-6MPa, stress is applied to the leading-out rod 4 to ensure that the fracturing device 1 is completely fixed, then the fracturing device 1 is started to release gaseous fracturing media, after fracturing is completed for at least 30 minutes, the gas concentration near the drill hole 9 is detected, the fracturing device 1 is dismantled after safety is ensured, and then the drill hole 9 is used for drainage and hole sealing continuous drainage. The product utilizes an anti-reflection desorption technology to realize high-concentration and high-flow gas extraction in a coal bed, the lower extraction limit is reduced to below 8 m/t, the single-hole extraction efficiency is improved by 10-25 times, the extraction period is greatly shortened, and low-cost coal and gas co-extraction is realized. The anti-reflection displacement technology is applied to continuously and rapidly tunnel coal and gas outburst mines, low-gas operation is realized in the coal seam, the gas outburst source in the coal seam is safely and effectively relieved, the excavating efficiency is improved by 5-10 times, and the excavating connection period is greatly shortened.
In order to ensure the connection firmness, the fracturing devices 1 are connected through the connecting piece 2 and are not easy to loosen in the use process.
Furthermore, send and split ware 1 including main part, energy release valve, inflation valve and the device that generates heat, the device that generates heat is fixed in the main part and the main part adopts enclosed construction, simple structure, excellent in use effect.
Furthermore, the main body is made of stainless steel materials, raw materials are easy to obtain, the processing is convenient, and the using effect is good.
The product of this embodiment is adopted in Guizhou Lindong group Honglin coal mine, 7 holes are caused to crack altogether, the highest concentration of single hole after causing the crack is 98.1%, the highest purity is 1.2m cultivation/min, the radius of causing the crack can reach more than 8 meters, than not causing the crack regional gas extraction efficiency to improve more than 30 times. The gas utilization rate reaches more than 95 percent.
The product directly acts for about 3-6 meters, and the influence radius can reach 20 meters; the average gas extraction efficiency of the hundred-meter drilled holes is improved by 10-25 times, and the coal seam difficult to extract can reach about 40 times; the gas concentration is greatly improved, the single-hole concentration can reach more than 50%, and the highest concentration can reach 100%; high-concentration large-flow extraction can be realized in a low-gas coal bed, and low-cost coal and gas co-extraction is realized; the gas drainage drilling work amount is reduced by 50-90%; the tunneling efficiency in the coal bed with serious coal and gas outburst can be improved by 5-10 times, and continuous and rapid tunneling and working face rapid propulsion are realized; the gas treatment time is greatly shortened, the production efficiency is improved, and the production management cost is greatly reduced; improve the gas utilization rate and reduce the environmental pollution.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a low-cost coal and gas is adopted system altogether, includes and send and splits ware (1) and hole sealing device (3), send the quantity of splitting ware (1) and send and split ware (1) and all fix in drilling (9), its characterized in that, a plurality of sending and split ware (1) and link to each other in proper order, hole sealing device (3) with send and split ware (1) and be connected, the one end of hole sealing device (3) is connected with draws forth pole (4), draw and be fixed with the start-up generating line that links to each other with pressure pipeline on pole (4).
2. The low cost coal and gas co-production system according to claim 1, wherein the extraction rod (4) is fixed in the roadway (6) by a fixing member (5).
3. The low cost coal and gas co-production system according to claim 1, wherein the frackers (1) are connected to each other by a connection (2).
4. The low cost coal and gas co-production system according to claim 1, wherein the fracker (1) comprises a body, a dump valve, an inflation valve and a heat generating device, the heat generating device is fixed in the body and the body adopts a closed structure.
5. The low cost coal and gas co-production system according to claim 4, wherein the body is made of stainless steel material.
6. The low-cost coal and gas co-production system according to claim 1 or 2, wherein a groove is formed in the connecting piece (2), a protrusion is formed in the cracking device (1), and the cracking device (1) is fastened with the connecting piece (2) through the matching of the protrusion and the groove.
7. The low cost coal and gas co-production system according to claim 1, wherein the extraction rod (4) is made of cast iron material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010329879.XA CN111350483A (en) | 2020-04-24 | 2020-04-24 | Low-cost coal and gas co-production system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010329879.XA CN111350483A (en) | 2020-04-24 | 2020-04-24 | Low-cost coal and gas co-production system |
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| CN111350483A true CN111350483A (en) | 2020-06-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612644A (en) * | 2014-11-18 | 2015-05-13 | 山西潞安矿业(集团)有限责任公司 | Gas phase fracturing and fast gas extraction method for low permeability coal bed |
| CN105201481A (en) * | 2015-10-17 | 2015-12-30 | 山西晋煤集团技术研究院有限责任公司 | Liquid CO2 phase transition multipoint fracturing and permeability increasing method |
| CN105401930A (en) * | 2015-09-02 | 2016-03-16 | 煤科集团沈阳研究院有限公司 | Carbon dioxide phase change coal seam fracturing device and utilization method |
| US20170370156A1 (en) * | 2015-11-30 | 2017-12-28 | China University Of Mining And Technology | Method of performing combined drilling, flushing, and cutting operations on coal seam having high gas content and prone to bursts to relieve pressure and increase permeability |
-
2020
- 2020-04-24 CN CN202010329879.XA patent/CN111350483A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612644A (en) * | 2014-11-18 | 2015-05-13 | 山西潞安矿业(集团)有限责任公司 | Gas phase fracturing and fast gas extraction method for low permeability coal bed |
| CN105401930A (en) * | 2015-09-02 | 2016-03-16 | 煤科集团沈阳研究院有限公司 | Carbon dioxide phase change coal seam fracturing device and utilization method |
| CN105201481A (en) * | 2015-10-17 | 2015-12-30 | 山西晋煤集团技术研究院有限责任公司 | Liquid CO2 phase transition multipoint fracturing and permeability increasing method |
| US20170370156A1 (en) * | 2015-11-30 | 2017-12-28 | China University Of Mining And Technology | Method of performing combined drilling, flushing, and cutting operations on coal seam having high gas content and prone to bursts to relieve pressure and increase permeability |
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Effective date of registration: 20211222 Address after: 550000 No. 05, floor 17, unit 1, building A3, southwest R & F Center, No. 81 Chengxin North Road, Yuntan sub district office, guanshanhu District, Guiyang City, Guizhou Province Applicant after: GUIZHOU LIANHE ANSHENG MINE TECHNOLOGY SERVICE CO.,LTD. Address before: 272000 Innovation Industrial Park, Liangshan Economic Development Zone, Jining City, Shandong Province Applicant before: Liangshan nazhiji Mine Engineering Technology Co.,Ltd. |
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Application publication date: 20200630 |