CN103089294B - Multi-well casing net-shaped device of coal bed gas exploration and coal underground gasification - Google Patents
Multi-well casing net-shaped device of coal bed gas exploration and coal underground gasification Download PDFInfo
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- CN103089294B CN103089294B CN201310004406.2A CN201310004406A CN103089294B CN 103089294 B CN103089294 B CN 103089294B CN 201310004406 A CN201310004406 A CN 201310004406A CN 103089294 B CN103089294 B CN 103089294B
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Abstract
The invention relates to a multi-well casing net-shaped device of coal bed gas exploration and coal underground gasification. The multi-well casing net-shaped device of the coal gas exploration and the coal underground gasification is characterized by being composed of a perpendicular center vent pipe and a plurality of perpendicular well casings. The perpendicular center vent pipe is communicated with the plurality of perpendicular well casings and underground parts among the plurality of well casings through directional wells. Requirements of the coal bed gas exploration and underground coal gasification production are met. Non-well underground coal bed gas acquiring and coal gasification production are safe, convenient and fast and reliable. In order achieve beautiful China, low carbon economy, scientific development and industrial structure adjusting, the multi-well casing net-shaped device provides new supporting points, reasonable investment and comprehensive utilization of coal resources are achieved, and the multi-well casing net-shaped device is more reasonable, scientific and economical.
Description
Technical field
The invention belongs to Coal-seam Gas Recovery Technologies and Underground Coal Gasification Technics field, particularly the netted coal-bed gas exploitation of a kind of many well casings and in-situ coal gasification device.
Background technology
Coal bed gas refer to compose exist in coal seam with methane be main component, based on be adsorbed on matrix of coal particle surface, part be free in coal hole or the hydrocarbon gas be dissolved in coal seam water, it is the associated minerals resource of coal, belong to Unconventional forage, be emerge in the world in nearly ten or twenty year cleaning, high-grade energy and industrial chemicals.At present, the exploitation of coal bed gas generally has two kinds of modes: one is mining with surface drill well; Two is that down-hole gas sucking releasing system is extracted out.By the quantity of wind resource assessment can be greatly reduced after surface mining and extraction, reduce colliery to the requirement of ventilating, improve the safety production condition of miner.China's coal bed gas resource enriches, and occupies third place in the world.Every year while mining, the coal bed gas of discharge is more than 130 billion cubic meters, and about the amount of reasonable extraction should reach 35 billion cubic meters, exploitation and the utilization of coal bed gas have broad prospects.
Coal is directly become a kind of Application way of coal gas by in-situ coal gasification in underground.In-situ coal gasification can be divided into usually has well formula and without well formula two kinds.No-shaft underground gasification is using directed well drilling technology, gets out the gasification tunnel in air inlet, steam vent and coal seam by ground, leads to coal seam with tunnel or boring, and press-in air, lights coal seam, makes coal gas derive ground.The composition of gained coal gas, mainly nitrogen, hydrogen, carbon monoxide, carbon dioxide, and a small amount of methane etc., can as gaseous fuel and industrial chemicals.The dark coal seam that gasification of coal in place can more effectively utilize current techniques to be difficult to exploit or girdle.
At present, also the exploitation of coal bed gas and in-situ coal gasification are not carried out the technology that combines and device.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide the netted coal-bed gas exploitation of a kind of many well casings and in-situ coal gasification device, its reasonable in design, to coal-bed gas exploitation and in-situ coal gasification all applicable.
A kind of netted coal-bed gas exploitation of many well casings and in-situ coal gasification device, it is characterized in that: be made up of with multiple vertical well casing vertical centre stack, vertical centre stack and described multiple vertical well casing and multiple well casing separately between under ground portion all undertaken through by directional well.
And, described multiple vertical well casing comprise send air well casing, take out coal gas well casing, row's underground water well casing, igniting well casing and control channel.
Advantage of the present invention and beneficial effect are:
1, the netted coal-bed gas exploitation of many well casings of the present invention and in-situ coal gasification device, is suitable for first mining coal seam gas again by in-situ coal gasification, and strong adaptability, and to abandoned well, high inclination-angle coal deposits, deep layer coal deposits, layering coal deposits is all applicable.
2, this netted coal-bed gas exploitation of many well casings and in-situ coal gasification device, is formed on earth's surface and firmly supports, effectively prevent caving in of earth's surface.
3, the netted coal-bed gas exploitation of the many well casings of the present invention and in-situ coal gasification device, it is the combination of mining coal seam gas and underground gasification technology, more reasonable to the comprehensive utilization of coal resource, more scientific, more economical, reduce overlapping investment, be the acquisition technique of coal bed gas and the development of coal underground gas technology and raising, provide more reliable technical support and guarantee.
4, the present invention's many well casings net device meets the needs of mining coal seam gas and underground gasification production, the production safety realized without the collection of well subterranean coal gas and gasification is convenient and reliable, for realizing beautiful China, low-carbon economy, scientific development and industry restructuring provide the new strong point, reach the comprehensive utilization of rational investment and coal resource, have more reasonability, scientific and economy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention (sectional view);
Fig. 2 is the top view of Fig. 1.
Description of reference numerals:
1-vertical centre stack, the vertical well casing of 2-, 3-coal seam, 4-directional well, 5-send air well casing,
6-takes out coal gas well casing, 7-arranges underground water well casing, 8-lights a fire well casing, 9-control channel.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of netted coal-bed gas exploitation of many well casings and in-situ coal gasification device, its innovation is: be made up of with multiple vertical well casing 2 vertical centre stack 1, vertical centre stack and described multiple vertical well casing and multiple well casing separately between under ground portion all undertaken through by directional well 4.The mining coal seam gas passage in the webbed coal seam 3 of shape or underground gasification passage.Multiple vertical well casing comprise send air well casing 5, take out coal gas well casing 6, row's underground water well casing 7, igniting well casing 8 and control channel 9.Spacing 4 ~ the 10M of multiple vertical well casing, wellhole footpath Ф 200 ~ 400mm.
Directional well can be horizontal well or perforation, and horizontal well or perforation form the passage of coal bed gas and gasification, can meet the technical requirements of mining coal seam gas and underground gasification.
The course of work of the netted coal-bed gas exploitation of the many well casings of the present invention and in-situ coal gasification device is:
First carry out the exploitation of coal bed gas, utilization is taken out coal gas well casing and is extracted coal bed gas.
Carry out in-situ coal gasification again, utilize igniting well casing to light a fire, and utilization send air to carry out conveying combustion-supporting gas, realized the discharge of underground water by row's underground water well casing, and utilize control channel to realize controlling the air pressure etc. of combustion-supporting gas.
This netted coal-bed gas exploitation of many well casings and in-situ coal gasification device, send air well casing, take out coal gas well casing, row's underground water well casing, igniting well casing be all at least one, certainly can be set to multiplely send air well casing, multiplely take out coal gas well casing, multiple row's underground water well casing, multiple igniting well casing according to practical condition.
This netted coal-bed gas exploitation of many well casings and in-situ coal gasification device, the webbed coal bed gas passage/underground gasification passage of shape, can strengthen productive area, improves the efficiency of coal-bed gas exploitation or in-situ coal gasification, widens the way of exploitation of the energy simultaneously.
Although disclosed embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that, in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, and therefore scope of the present invention is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (1)
1. the netted coal-bed gas exploitation of well casing more than a kind and in-situ coal gasification device, it is characterized in that: be made up of with multiple vertical well casing vertical centre stack, vertical centre stack and described multiple vertical well casing and multiple well casing separately between under ground portion all undertaken through by directional well; Described multiple vertical well casing comprise send air well casing, take out coal gas well casing, row's underground water well casing, igniting well casing and control channel, first mining coal seam gas is again by in-situ coal gasification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310004406.2A CN103089294B (en) | 2013-01-07 | 2013-01-07 | Multi-well casing net-shaped device of coal bed gas exploration and coal underground gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310004406.2A CN103089294B (en) | 2013-01-07 | 2013-01-07 | Multi-well casing net-shaped device of coal bed gas exploration and coal underground gasification |
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| Publication Number | Publication Date |
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| CN103089294A CN103089294A (en) | 2013-05-08 |
| CN103089294B true CN103089294B (en) | 2015-07-01 |
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| CN201310004406.2A Expired - Fee Related CN103089294B (en) | 2013-01-07 | 2013-01-07 | Multi-well casing net-shaped device of coal bed gas exploration and coal underground gasification |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195096A (en) * | 2018-01-03 | 2018-06-22 | 西南石油大学 | A kind of underground heat insinuating language well construction |
| CN108756846A (en) * | 2018-07-19 | 2018-11-06 | 李勇 | The underground coal gasification passage and gasification process being made of Multi-layer U-shape docking well group |
| CN110939424B (en) * | 2019-11-27 | 2022-04-12 | 西安物华巨能爆破器材有限责任公司 | Well-free underground coal gasification ignition method |
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| CN1057365C (en) * | 1994-10-15 | 2000-10-11 | 中国矿业大学 | Long-passage large-section underground coal gasification process for mine |
| RU2318117C1 (en) * | 2006-08-21 | 2008-02-27 | Дальневосточный государственный технический университет | Underground gasification method |
| CN101382065A (en) * | 2008-09-04 | 2009-03-11 | 乌兰察布新奥气化采煤技术有限公司 | No-shaft underground gasification process |
| CN101382063A (en) * | 2008-09-04 | 2009-03-11 | 新奥气化采煤有限公司 | Novel underground coal gasification furnace |
| RU2392427C1 (en) * | 2008-12-31 | 2010-06-20 | Открытое акционерное общество "Газпром промгаз" (ОАО "Газпром промгаз") | Method for underground gasification of tick coal beds |
| RU2441980C2 (en) * | 2010-04-20 | 2012-02-10 | Открытое Акционерное Общество "Газпром Промгаз" | Underground coal gasification technique |
| CN102477857A (en) * | 2010-11-30 | 2012-05-30 | 新奥气化采煤有限公司 | Passage formation method for underground coal gasification |
| CN102606128A (en) * | 2011-12-29 | 2012-07-25 | 新奥气化采煤有限公司 | Oil shale mining method and device |
| CN102635346A (en) * | 2012-04-13 | 2012-08-15 | 北京大学 | Movable ignition system for UCG (underground coal gasification) |
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2013
- 2013-01-07 CN CN201310004406.2A patent/CN103089294B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057365C (en) * | 1994-10-15 | 2000-10-11 | 中国矿业大学 | Long-passage large-section underground coal gasification process for mine |
| CN1136635A (en) * | 1995-05-25 | 1996-11-27 | 中国矿业大学 | propelling air supply type coal underground gasification furnace |
| RU2318117C1 (en) * | 2006-08-21 | 2008-02-27 | Дальневосточный государственный технический университет | Underground gasification method |
| CN101382065A (en) * | 2008-09-04 | 2009-03-11 | 乌兰察布新奥气化采煤技术有限公司 | No-shaft underground gasification process |
| CN101382063A (en) * | 2008-09-04 | 2009-03-11 | 新奥气化采煤有限公司 | Novel underground coal gasification furnace |
| RU2392427C1 (en) * | 2008-12-31 | 2010-06-20 | Открытое акционерное общество "Газпром промгаз" (ОАО "Газпром промгаз") | Method for underground gasification of tick coal beds |
| RU2441980C2 (en) * | 2010-04-20 | 2012-02-10 | Открытое Акционерное Общество "Газпром Промгаз" | Underground coal gasification technique |
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| CN102635346A (en) * | 2012-04-13 | 2012-08-15 | 北京大学 | Movable ignition system for UCG (underground coal gasification) |
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Effective date of registration: 20160711 Address after: 300380 Xin Tong Industrial Park, Xiqing Economic Development Zone, Tianjin Patentee after: TIANJIN LANXIN INDUSTRIAL TRADING COMPANY Patentee after: Han Yongping Address before: 300161 Hedong District of Tianjin City Road, 10-2501 District of Nanyuan Xin Wang Chen Yang Patentee before: Han Yongping |
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Effective date of registration: 20160905 Address after: 300161 Hedong District of Tianjin City Road, 10-2501 District of Nanyuan Xin Wang Chen Yang Patentee after: Han Yongping Address before: 300380 Xin Tong Industrial Park, Xiqing Economic Development Zone, Tianjin Patentee before: TIANJIN LANXIN INDUSTRIAL TRADING COMPANY Patentee before: Han Yongping |
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