RU2379520C1 - Extraction method of methane from coal bed - Google Patents

Extraction method of methane from coal bed Download PDF

Info

Publication number
RU2379520C1
RU2379520C1 RU2008129354/03A RU2008129354A RU2379520C1 RU 2379520 C1 RU2379520 C1 RU 2379520C1 RU 2008129354/03 A RU2008129354/03 A RU 2008129354/03A RU 2008129354 A RU2008129354 A RU 2008129354A RU 2379520 C1 RU2379520 C1 RU 2379520C1
Authority
RU
Russia
Prior art keywords
methane
chamber
drilling
gas
wells
Prior art date
Application number
RU2008129354/03A
Other languages
Russian (ru)
Inventor
Анатолий Дмитриевич Рубан (RU)
Анатолий Дмитриевич Рубан
Виктор Семенович Забурдяев (RU)
Виктор Семенович Забурдяев
Геннадий Семенович Забурдяев (RU)
Геннадий Семенович Забурдяев
Original Assignee
Учреждение Российской академии наук Институт проблем комплексного освоения недр РАН (УРАН ИПКОН РАН)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Учреждение Российской академии наук Институт проблем комплексного освоения недр РАН (УРАН ИПКОН РАН) filed Critical Учреждение Российской академии наук Институт проблем комплексного освоения недр РАН (УРАН ИПКОН РАН)
Priority to RU2008129354/03A priority Critical patent/RU2379520C1/en
Application granted granted Critical
Publication of RU2379520C1 publication Critical patent/RU2379520C1/en

Links

Images

Abstract

FIELD: mining engineering.
SUBSTANCE: invention includes implementation of mine openings, drilling from chamber in the range of block of treated layer of overlength underground wells in the direction of connection development, sealing of its mouths, connection to gas conduit and suction of methane. Novelty of invention is that from chamber there are implemented through wells, curvature of which from mouth in the direction of boring is reduced up to zero, herewith through wells are sealed from both sides, suction of methane at the first stage is implemented in two directions, and at the second stage of implementation of second workings methane is sucked off in the direction of upset excavation.
EFFECT: there is achieved extraction of high volumes of methane from coal bed with withdrawal of it from mining face, reduction gas-ample of mine openings, providing of safe working conditions of miners by gas factor in process of implementation of minings, reduction of appearance probability of methane explosion and carbon dust, improvement of economic indexes of mine and air atmosphere.
5 cl, 3 dwg

Description

The invention relates to mining and can be used to extract methane from a coal seam in order to intensify the degassing process and reduce the gas mobility of mine workings, to combat sudden emissions of gas and coal, to ensure safe working conditions for miners, to reduce the likelihood of gas explosions and coal dust.
The practice of mines shows that with a low degree of formation degassing during the development of coal seams hazardous in gas and dust, explosions of methane-dust mixtures occur. Despite the fact that the number of methane and dust explosions has decreased in recent years, their severity has increased many times. Methane and coal dust explosions at the Ulyanovskaya, Yubileinaya and Komsomolskaya mines in Russia named after A.F. Zasyadko named after N.P. Barakova and them. Karl Marx in Ukraine, them. V.I. Lenin, “Shakhtinskaya” and “Abayskaya” in Kazakhstan led to a huge number of miners' deaths, large destruction of mine workings and enormous economic damage.
A known method of extracting methane from a coal seam using the method of directional drilling of underground degassing wells. Using modern technologies, directional well drilling in mines ensures efficient methane extraction at treatment sites. The experience of foreign companies confirms the advantage of such well drilling technology for extracting mine gas and the subsequent use of mine methane for commercial purposes. An underground method for producing mine gas is the most economically feasible, since almost already during drilling, gas is diverted to the degassing network and to the surface. But degassing by drilling wells from the surface is an order of magnitude more expensive [1].
This method has inherent disadvantages due to its relatively low efficiency, which contributes to methane and coal dust explosions, large casualties and enormous economic damage.
The closest in technical essence and the achieved result for the purposes of intensifying the degassing process, extracting large volumes of methane and reducing gas mines, ensuring safe working conditions for miners by the gas factor during mining operations, and reducing the likelihood of gas explosions and coal dust is a methane extraction method from a coal seam, including mining, drilling from the chamber within the block of the mined seam of extra-long underground wells zhin towards sboechnoy generation, sealing their mouths, and the connection to the gas suction methane [2].
This method has the same disadvantages that are noted in the analogue. In addition, when drilling each well, it is necessary to move the drilling rig.
The aim of the invention is to increase the degree of methane extraction from the coal seam during the treatment process, to intensify the degassing process and to reduce the gas mobility of mine workings, to ensure safe working conditions for miners by the gas factor, to reduce the likelihood of methane and coal dust explosions.
According to the invention, this problem is solved in that in a method for extracting methane from a coal seam, including mining, drilling from the chamber within the block of the produced seam of super-long underground wells in the direction of disruptive development, sealing their mouths, connecting to the gas pipeline and suctioning methane from the chamber conduct through holes, the curvature of which from the wellhead in the direction of drilling decreases to zero, while through holes are sealed on both sides, the methane is sucked off in the first stage in two directions, and in the second stage, in the process of conducting treatment works, methane is sucked off in the direction of the production output. In addition, during the development of the reservoir by the face at the uprising of the well from the chamber, they are drilled along the direction of the face. Before connecting the newly drilled rising well to the gas pipeline laid in the production unit, water is drained from the well through the mouth located in the chamber. The distance between the chambers in the excavation section is 500-1000 m, depending on the capabilities of the drilling equipment and the schedule of the preparatory workings in the excavation section of the reservoir, while the chamber is preferably located in the middle of the excavation.
The invention is illustrated by drawings, where figure 1 shows a copy of the mining plan of the Boldyrevsky reservoir with the direction of methane suction in both directions (the first stage) and during the treatment process (shown by dashed arrows). Excavation sites in difficult mining conditions may have multidirectional occurrence. So, for example, on the Boldyrevsky reservoir, they are divided into two parts: by dip (block A) and uprising (blocks B and C). Production output 4 is the boundary between the two parts; figure 2 - diagram of the suction of methane in the wells in both directions (first stage); figure 3 - diagram of the suction of methane in the process of treatment.
A method of extracting methane from a coal seam is as follows. Conduct mining 1-4, contouring the excavation blocks A, B and C (Fig.1-3). Drilling of wells is carried out from the chamber 5, for example, within the block B of the produced formation 7 of extra-long underground wells 8 in the direction of the drill hole 9, sealing their mouths, connecting to the gas pipeline 10 and suction methane (shown by dashed arrows 11). The curvature of the through holes from the wellhead in the direction of drilling decreases to zero, while the through holes are sealed on both sides, the methane is sucked off in the first stage (see block B, Fig. 1) in two directions, and in the second stage during the treatment (block A, Fig. 1) methane is sucked off in the direction of production output 4. When mining the formation 7, the face 6 along the uprising of the well 8 from the chamber 5 is drilled along the face of the face 6 (shown by a short solid arrow 12, Figs. 2 and 3, formation fall - a long solid arrow 13, figure 1 -3). Prior to connecting the newly drilled rising well 8 to the gas pipeline 10, laid in the borehole 4 (FIG. 2), water is drained from the well through the mouth located in chamber 5 (FIG. 2). The distance between the chambers 5 and 5 '(Fig. 1) in the excavation section (block) is 500-1000 m, depending on the capabilities of the drilling equipment and the schedule of the preparatory workings in the excavation section of the worked out formation (not shown in the figures). The cameras are preferably located in the middle of the mine 4 and other mine workings of a similar purpose.
The implementation of the invention will ensure the extraction of methane in large volumes from the coal seam with its removal from the face, reducing the gas mobility of the mine workings, will ensure safe working conditions for miners by the gas factor during mining operations, reduce the likelihood of methane and coal dust explosions, and improve the economic performance of the mine and airy atmosphere.
Information sources
1. Demchenko A.G. Degassing of coal seams and additional exploration of coal deposits using directional drilling. - “Coal”, 2008, No. 3. - S.60-65.
2. Guidelines on the degassing of coal mines (RD-15-09-2006). Series 05. Issue 14 / Coll. author - M .: Open Joint Stock Company "Scientific and Technical Center for Safety in Industry", 2007. - 256 p. (Fig. 8, p. 71, prototype).

Claims (5)

1. A method of extracting methane from a coal seam, including mining, drilling from the chamber within the block of the produced seam of super-long underground wells in the direction of disruptive development, sealing their mouths, connecting to the gas pipeline and exhausting methane, characterized in that through holes are conducted from the chamber the curvature of which from the wellhead in the direction of drilling decreases to zero, while the through holes are sealed on both sides, the methane is sucked off in two directions at the first stage, and at the second e in the process of sewage treatment works methane suctioned towards sboechnoy generation.
2. The method according to claim 1, characterized in that during the development of the reservoir with a working face following the uprising of the well from the chamber, they drill along the direction of the working face.
3. The method according to claim 1 or 2, characterized in that prior to connecting the newly drilled rising well to the gas pipeline laid in the production line, water is drained from the well through the mouth located in the chamber.
4. The method according to claim 1, characterized in that the distance between the chambers in the excavation section is 500-1000 m, depending on the capabilities of the drilling equipment and the schedule of the preparatory workings in the excavation section of the worked out formation.
5. The method according to claim 1 or 2, characterized in that the camera is preferably located in the middle of the output.
RU2008129354/03A 2008-07-18 2008-07-18 Extraction method of methane from coal bed RU2379520C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2008129354/03A RU2379520C1 (en) 2008-07-18 2008-07-18 Extraction method of methane from coal bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2008129354/03A RU2379520C1 (en) 2008-07-18 2008-07-18 Extraction method of methane from coal bed

Publications (1)

Publication Number Publication Date
RU2379520C1 true RU2379520C1 (en) 2010-01-20

Family

ID=42120837

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2008129354/03A RU2379520C1 (en) 2008-07-18 2008-07-18 Extraction method of methane from coal bed

Country Status (1)

Country Link
RU (1) RU2379520C1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102094669A (en) * 2010-12-24 2011-06-15 中国矿业大学 Three-dimensional source separated pressure-releasing gas treatment method
RU2442899C1 (en) * 2010-06-25 2012-02-20 Михаил Владимирович Попов Method for removing gas from unfanned coal seams
RU2499142C2 (en) * 2011-09-02 2013-11-20 Михаил Владимирович Попов Method of degassing of unrelieved formations in underground mines
RU2520669C1 (en) * 2013-03-12 2014-06-27 Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук Coal seam degassing
CN108798758A (en) * 2017-04-28 2018-11-13 煤科集团沈阳研究院有限公司 Along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique
CN110685734A (en) * 2019-10-24 2020-01-14 中煤科工集团西安研究院有限公司 Panel gas treatment method based on partition step-by-step increasing tree-shaped directional long drilling

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Методические рекомендации о порядке дегазации угольных шахт (РД-15-09-2006), серия 05, выпуск 14. - М.: ОАО "Научно-технический центр по безопасности в промышленности", 2007, с.71, рис.8. *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2442899C1 (en) * 2010-06-25 2012-02-20 Михаил Владимирович Попов Method for removing gas from unfanned coal seams
CN102094669A (en) * 2010-12-24 2011-06-15 中国矿业大学 Three-dimensional source separated pressure-releasing gas treatment method
CN102094669B (en) * 2010-12-24 2012-11-28 中国矿业大学 Three-dimensional source separated pressure-releasing gas treatment method
RU2499142C2 (en) * 2011-09-02 2013-11-20 Михаил Владимирович Попов Method of degassing of unrelieved formations in underground mines
RU2520669C1 (en) * 2013-03-12 2014-06-27 Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук Coal seam degassing
CN108798758A (en) * 2017-04-28 2018-11-13 煤科集团沈阳研究院有限公司 Along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique
CN110685734A (en) * 2019-10-24 2020-01-14 中煤科工集团西安研究院有限公司 Panel gas treatment method based on partition step-by-step increasing tree-shaped directional long drilling
CN110685734B (en) * 2019-10-24 2021-01-29 中煤科工集团西安研究院有限公司 Panel gas treatment method based on partition step-by-step increasing tree-shaped directional long drilling

Similar Documents

Publication Publication Date Title
RU2379520C1 (en) Extraction method of methane from coal bed
RU2339818C1 (en) Degassing method of set of contiguous coal beds for barrier method
RU2419723C1 (en) Degasation method of developed coal beds
CN102635388A (en) Interaction permeability-increasing method of pre-splitting blasting and hydraulic cracking of coal seam
RU2373399C1 (en) Method of coal layer degasification
CN104454001A (en) In-tunnel dewatering system and method for tunnel in low-permeability silty-fine sand stratum
CN109209474A (en) A kind of method that dual-lateral well extracts lower coal seam and top more goaf gas and ponding
RU2086773C1 (en) Method for degassing of follower-seam
RU2666570C1 (en) Method of degasssing of overworked accompanying bed
CN102121393B (en) Method and system for continuously pumping gas in coal uncovering process of vertical shaft
SU750108A1 (en) Method of degassing coal bed satellites
RU2415266C1 (en) Method of coal extraction from chambers with pre-production mining of methane
RU2516674C1 (en) Degassing of high coal at its processing in "layer-bed"
RU2376475C1 (en) Method of gas extraction from coal-bearing strata
CN109209475B (en) Method for extracting gas in multiple goafs by combining short vertical shaft and drill hole
UA147737U (en) METHOD OF DEGASATION OF GAS-SATURATED CARBON ARROW
Korovyaka et al. Perspectives of mine methane extraction in conditions of Donets’k gas-coal basin
Lunarzewski Gas drainage practices
SU1278468A1 (en) Method of degassing and moistening coal seam
RU2096618C1 (en) Drill-and-drift method for underground mining of coal seams
RU2732931C1 (en) Degassing method of working area
UA146990U (en) METHOD OF COMPREHENSIVE DEGASATION OF COALED LAYERS OF COAL LAYERS IN COLUMN DEVELOPMENT SYSTEM
RU2540750C2 (en) Complex method of preliminary degassing of working coal bed, worked-out area and accompanying beds and controlled caving of heavy roof
CN204877533U (en) Closely gas drainage system is organized in coal seam
RU1810586C (en) Method of degasification of coal-bearing bad

Legal Events

Date Code Title Description
MM4A The patent is invalid due to non-payment of fees

Effective date: 20120719