WO1999063200A1 - Mine de charbon produisant du gaz de houille a partir d'un gisement et procede de production de gaz de houille - Google Patents

Mine de charbon produisant du gaz de houille a partir d'un gisement et procede de production de gaz de houille Download PDF

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Publication number
WO1999063200A1
WO1999063200A1 PCT/CN1999/000072 CN9900072W WO9963200A1 WO 1999063200 A1 WO1999063200 A1 WO 1999063200A1 CN 9900072 W CN9900072 W CN 9900072W WO 9963200 A1 WO9963200 A1 WO 9963200A1
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WO
WIPO (PCT)
Prior art keywords
gas
coal
gasification
mine
gas injection
Prior art date
Application number
PCT/CN1999/000072
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English (en)
Chinese (zh)
Inventor
Zhaoxi Chai
Original Assignee
Zhaoxi Chai
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 Zhaoxi Chai filed Critical Zhaoxi Chai
Priority to AU40289/99A priority Critical patent/AU4028999A/en
Publication of WO1999063200A1 publication Critical patent/WO1999063200A1/fr

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Classifications

    • 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
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • E21B43/243—Combustion in situ

Definitions

  • the invention relates to a method for developing coal resources, that is, a mine and a production method for directly producing coal gas in a coal seam, and belongs to mining technology.
  • An object of the present invention is to provide a mine and a production method for directly producing coal gas in a coal seam. Personnel operate gasification production nearby in the mine, and monitor and control the gasification process nearby, thereby solving the problems existing in "underground coal gasification”. Technical, economic, and environmental problems, and the problems of coal mines.
  • the main contents of the gasification mine of the present invention are:
  • the mine includes a mine ventilation system consisting of a ventilation shaft and a ventilation roadway.
  • the ventilation system drains, transports and lifts at the same time, providing conditions for personnel to work underground.
  • Mine includes underground gas transportation and gas transportation system to the ground composed of gas passages (the term “channel” includes pipelines, shafts, roadways, boreholes or other forms of holes, the same applies hereinafter), and by gas injection Gas injection system consisting of boreholes and gasification channels;
  • the mine uses the gasification channel in the coal seam to form an "underground gasifier", which produces gas directly.
  • One end of the mine is connected to a gas injection borehole. Gas is injected. The produced gas is discharged into the gas channel from the other end and transported to the surface. ;
  • the method for producing gas in the "gasification mine” of the present invention is as follows: there is a gasification channel (that is, an "underground gasification furnace") in the coal seam, one end of which is connected to the gas channel, and the other end is drilled from the ventilation roadway to the gasification channel. Hole, insert one or more gas injection pipe into the hole and seal the hole, the gas injection pipe is connected with the gas injection system of the mine; during production, the ignition is performed in the gasification channel, and the gas injection tube injects gas into the gasification channel The gasification reaction of coal occurs in the coal wall of the gasification channel, and the generated gas is discharged into the gas channel.
  • a gasification channel that is, an "underground gasification furnace”
  • the technical measures adopted by the invention for continuous and stable production of coal gas in the coal seam are also:
  • the roadway drills a group of gas injection boreholes in the direction of the gas passage.
  • the gas injection pipe is inserted into a certain hole length at the opening to seal the hole, and the rest is a tree hole. Adjacent gas injection boreholes sequentially replace gas injection, and gasification production continues. get on.
  • the technical measures adopted in the present invention for directly producing coal gas from the coal seam are also as follows: In one gasification channel, two or more gas injection pipes are inserted through the gas injection boreholes from a ventilated aisle, and the gas outlet openings are spaced apart The gas inlet end is connected to the gas supply line, and the gas injection pipe successively replaces the gas injection in order to continue the gasification production; two or more gas injection pipes can also be used for gas injection production at the same time.
  • the technical measures adopted by the present invention also include: drilling a row of through-holes into the coal seam from the ventilation roadway located on the floor of the coal seam, the bottom of the hole is in the coal seam, and hydraulic punching, high-pressure water jet drilling or "Reverse combustion” and other technologies make the bottoms of adjacent through-holes communicate with each other and open channels.
  • a "gasification working surface" for direct production of coal gas in a coal seam is composed of two ventilation lanes sharing a gas channel located between them; the gas channel can directly communicate with a gas well alone, It is also possible to share one gas well with two or more gas channels.
  • the present invention has the advantage that it provides a technology for directly constructing coal seam gasification furnaces by using roadways or boreholes in a mine to produce coal gas; personnel can control gasification production in the roadway nearby, and the operation is safe; "Underground gasification of coal” has inherent technical, economic, and environmental problems, as well as poor economic benefits and many accidents caused by direct production of coal from coal mines.
  • the mine and production method have convenient construction, low cost, and strong applicability.
  • Ventilation tunnel 1 is provided with gas supply pipelines, and personnel monitor and control the gasification process in the tunnel; gas channel 2 is used to collect and transport gas; 3 is a gas injection borehole; gas injection pipe 4 is inserted; 5 is gas injection Point; 6 is the gasification channel.
  • the arrow V indicates ventilation, A indicates gas injection, and G indicates gas (the same applies hereinafter).
  • FIG. 1 A production succession method for direct production of coal gas in coal seams.
  • the figure shows that, as shown in Fig. 1, when gas injection holes 3 are injected and gasification channel 6 produces gas, the gasification coal wall recedes to W and communicates with the replacement gas injection holes 3-1. 1 operation, open the gas injection pipe 3-1 gas injection pipe 4-1 gas injection replacement production. When the gasification coal wall backs up to communicate with the replacement gas injection borehole 3-2, the gas injection pipe 4-12 inside it is opened to take over production.
  • FIG. 3 A production succession method for direct production of coal gas in coal seams. The figure shows that from the ventilation tunnel 1 through the gas injection borehole 3, multiple gas injection pipes 4-1, 4-2, 4-3 are inserted into the gasification channel 6, and the gas injection pipe mouth is 5-
  • the gas injection holes 3-1 and 3-2 are the replacement gas injection holes of the gas injection hole 3.
  • the gas injection holes 3-1 contain one or more gas injection pipes 4-1-1 and 4-1- 2.
  • Gas injection borehole 3-2 Built-in gas injection pipes 4-2-1, 4-2-2, 4-2-3 ...;
  • the gas injection borehole 3 is gasified,
  • the gas injection borehole 3-1 that is, the gas injection pipe takes over production, and when the gasification coal The wall retracts to W l, W, -2. W r 3) ...
  • the gas injection hole 3-2 is the gas injection replacement production.
  • FIG. 5 Sectional view of a production replacement method for direct production of coal gas in coal seams. Ventilation roadway 1 is located on the floor of the coal seam. 3-1, 3-2, and 3-3 are gas injection boreholes, and the intersections with gasification channel 6 are 5-1, 5-2, and 5-3, respectively. Gas injection drilling 3-1, 3-2, 3- 3 sequentially replace gas injection production, or simultaneous gas injection production.
  • Figure 6 Diagram of one way to form a gas channel 2 or a gasification channel 6 in a coal seam.
  • a row of auxiliary drill holes 3 is drilled from the ventilation tunnel 1 to the coal seam.
  • the connection line of the bottom of the hole in the coal seam is the design position of the gas passage 1 or the gasification passage 6. Drill the bottom of 3 holes to penetrate through the coal seam.
  • FIG. 7 Open weathered mine.
  • the ventilation roadway 1 and the gas passage 2 are connected to the coal wall 7 of the open-pit mine.
  • Figure 8. Gasification face of independent gas well. Between the general ventilation roadways 10 and 11, every two ventilation roadways 1 share the gas passage 2 therebetween to form a gasification working surface ⁇ ; each gas passage 2 is directly connected to the gas well 12.
  • FIG. 9 Gasification working face of centralized gas well.
  • the figure shows a gas channel 2 on multiple gasification working surfaces, sharing a gas well 12 through a roadway 14.
  • the best way to implement the present invention is to set up a mine production system that directly produces coal gas in coal seams in existing open-pit coal mines.
  • one or more ventilated aisles 1 are excavated from the coal wall 7 of the open-pit mine, and the gas passage 2 is formed by digging the aisle or drilling to form a gasification working surface 13.
  • the coal walls on both sides of the gas channel 2 are gasified, and the generated gas is directly transported from the gas channel 2 to the ground.
  • each of the two ventilation roadways 1 and the gas passage 2 in a coal seam located therebetween constitute a gasification working surface 13; each The gas channel 1 on the gasification working surface communicates with a gas well 12.
  • Gasification production is carried out between the general roadway 1 and the gas channel 2.
  • the gasified coal wall moves upward and backward along the slope of the coal seam.
  • the produced gas enters the gas channel 2 and is transported from the gas well 12 to the ground.
  • This example can be performed by any one of the gas production methods provided by the present invention.
  • the gas injection, injection point back-off, monitoring, and regulation are all performed in the ventilation aisle 1.
  • Example 3 "Gasification working face" of a centralized gas well
  • the gas pass value 2 of two or more gasification working faces is communicated with the same gas well 12 through the roadway 14. Both sides of the gasification gas passage 2 are gasified by the gas production method of the present invention. Coal wall. The produced gas is transported to the surface from the gas passage 2 through the roadway 14 to the gas well 12.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Pipeline Systems (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

L'invention concerne une mine de charbon produisant du gaz de houille à partir d'un gisement et procédé de production de gaz de houille. La mine comprend un système de ventilation présentant un manche de ventilation à air et un tunnel de ventilation à air, un système de transport du gaz de houille présentant un passage et un système d'injection d'air dans lequel est ménagé un passage de gazéification. Ce passage forme un ? four de gazéification souterrain ?. Le procédé consiste à perforer une pluralité d'alésages en direction du passage de gaz de houille à partir du passage de ventilation à air dans le gisement ; à bourrer ces alésages après insertion de tuyaux d'injection d'air dans les alésages ; à soumettre le gisement à ignition dans le passage de gazéification et à injecter simultanément des gazéifiants dans le passage de gazéification à travers le tuyau d'injection d'air ; à injecter séquentiellement de l'air dans le passage de gazéification en provenance de tuyaux d'injection d'air dans les alésages adjacents afin d'obtenir une production de gaz en continu. Ainsi, les problèmes techniques et environnementaux associés à la ? gazéification du charbon souterrain ? peuvent être résolus à bas coûts et on peut surmonter les difficultés liées à la production de charbon directement à partir d'un gisement souterrain.
PCT/CN1999/000072 1998-05-29 1999-05-28 Mine de charbon produisant du gaz de houille a partir d'un gisement et procede de production de gaz de houille WO1999063200A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU40289/99A AU4028999A (en) 1998-05-29 1999-05-28 A coal mine through which coal gas can be produced directly from coal seam and acoal gas production method through the mine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB981021972A CN1320253C (zh) 1998-05-29 1998-05-29 于煤层直接生产煤气的矿井
CN98102197.2 1998-05-29

Publications (1)

Publication Number Publication Date
WO1999063200A1 true WO1999063200A1 (fr) 1999-12-09

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PCT/CN1999/000072 WO1999063200A1 (fr) 1998-05-29 1999-05-28 Mine de charbon produisant du gaz de houille a partir d'un gisement et procede de production de gaz de houille

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CN (1) CN1320253C (fr)
AU (1) AU4028999A (fr)
WO (1) WO1999063200A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2443788C1 (ru) * 2010-12-10 2012-02-27 Открытое Акционерное Общество "Газпром Промгаз" Способ извлечения редких металлов из золошлаковых масс отработанного подземного газогенератора
WO2014085855A1 (fr) * 2012-12-06 2014-06-12 Linc Energy Ltd Procédé d'injection d'oxydant pour gazéification de charbon souterrain
CN104675375A (zh) * 2015-02-06 2015-06-03 新奥气化采煤有限公司 一种地下气化方法及系统
CN104989365A (zh) * 2015-07-22 2015-10-21 攀钢集团攀枝花钢铁研究院有限公司 煤炭地下气化温度控制系统
US9428978B2 (en) 2012-06-28 2016-08-30 Carbon Energy Limited Method for shortening an injection pipe for underground coal gasification
US9435184B2 (en) 2012-06-28 2016-09-06 Carbon Energy Limited Sacrificial liner linkages for auto-shortening an injection pipe for underground coal gasification
CN107091114A (zh) * 2017-06-29 2017-08-25 辽宁工程技术大学 一种煤矿采空区束管保护装置及其使用方法
CN107165613A (zh) * 2017-07-07 2017-09-15 新疆国利衡清洁能源科技有限公司 一种煤炭地下气化矿井式气化炉安全保障系统及实施方法
CN110821544A (zh) * 2018-08-14 2020-02-21 柴乔森 矿井内自点火煤孔煤层气化炉式采区
CN112412518A (zh) * 2020-10-16 2021-02-26 湖南长院悦诚装备有限公司 一种隧道掌子面循环供风系统

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1117917C (zh) * 1999-11-26 2003-08-13 柴兆喜 一种于矿井内生产煤气的地下气化炉
CN1419037B (zh) * 2002-12-31 2010-09-08 柴兆喜 矿井气化炉
CN102434142B (zh) * 2011-11-30 2014-12-03 中国神华能源股份有限公司 一种煤炭地下气化方法
CN105019880A (zh) * 2015-07-07 2015-11-04 柴兆喜 正向注气煤巷气化炉
CN113266314A (zh) * 2021-06-15 2021-08-17 柴兆喜 煤层气煤气矿井

Citations (11)

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EP0030430A1 (fr) * 1979-11-28 1981-06-17 The University Of Newcastle Research Associates Limited Gazéification souterraine de charbon
US4436153A (en) * 1981-12-31 1984-03-13 Standard Oil Company In-situ combustion method for controlled thermal linking of wells
US4484629A (en) * 1982-09-28 1984-11-27 In Situ Technology, Inc. Movable oxidizer injection point for production of coal in situ
EP0131499A1 (fr) * 1983-06-30 1985-01-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé d'oxydation de couches sédimentaires souterraines contenant des matières hydrocarbonées
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US4753531A (en) * 1983-11-29 1988-06-28 Fuji Photo Film Co., Ltd. Flat container type analytical instrument
US4858689A (en) * 1988-04-11 1989-08-22 Resource Enterprises, Inc. Coal gasification well drilling process
CN1112188A (zh) * 1995-03-15 1995-11-22 柴兆喜 拉管注气点后退式煤层气化方法
CN1121138A (zh) * 1994-10-15 1996-04-24 中国矿业大学 矿井长通道大断面煤炭地下气化
CN1169501A (zh) * 1996-06-27 1998-01-07 柴兆喜 换管注气点后退式煤层气化方法
CN1172842A (zh) * 1996-08-02 1998-02-11 柴兆喜 多注－集通道交变移动床长壁煤层气化方法

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030430A1 (fr) * 1979-11-28 1981-06-17 The University Of Newcastle Research Associates Limited Gazéification souterraine de charbon
US4436153A (en) * 1981-12-31 1984-03-13 Standard Oil Company In-situ combustion method for controlled thermal linking of wells
US4484629A (en) * 1982-09-28 1984-11-27 In Situ Technology, Inc. Movable oxidizer injection point for production of coal in situ
EP0131499A1 (fr) * 1983-06-30 1985-01-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé d'oxydation de couches sédimentaires souterraines contenant des matières hydrocarbonées
US4753531A (en) * 1983-11-29 1988-06-28 Fuji Photo Film Co., Ltd. Flat container type analytical instrument
US4610303A (en) * 1984-11-16 1986-09-09 Vsesojuznoe Nauchno-Proizvod Stvennoe Obiedinenie "Sojuzpromgaz" Method of underground gasification of a series of gently dipping and inclined coal seams
US4858689A (en) * 1988-04-11 1989-08-22 Resource Enterprises, Inc. Coal gasification well drilling process
CN1121138A (zh) * 1994-10-15 1996-04-24 中国矿业大学 矿井长通道大断面煤炭地下气化
CN1112188A (zh) * 1995-03-15 1995-11-22 柴兆喜 拉管注气点后退式煤层气化方法
CN1169501A (zh) * 1996-06-27 1998-01-07 柴兆喜 换管注气点后退式煤层气化方法
CN1172842A (zh) * 1996-08-02 1998-02-11 柴兆喜 多注－集通道交变移动床长壁煤层气化方法

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2443788C1 (ru) * 2010-12-10 2012-02-27 Открытое Акционерное Общество "Газпром Промгаз" Способ извлечения редких металлов из золошлаковых масс отработанного подземного газогенератора
US9963949B2 (en) 2012-06-28 2018-05-08 Carbon Energy Limited Sacrificial liner linkages for auto-shortening an injection pipe for underground coal gasification
US9428978B2 (en) 2012-06-28 2016-08-30 Carbon Energy Limited Method for shortening an injection pipe for underground coal gasification
US9435184B2 (en) 2012-06-28 2016-09-06 Carbon Energy Limited Sacrificial liner linkages for auto-shortening an injection pipe for underground coal gasification
US9976403B2 (en) 2012-06-28 2018-05-22 Carbon Energy Limited Method for shortening an injection pipe for underground coal gasification
WO2014085855A1 (fr) * 2012-12-06 2014-06-12 Linc Energy Ltd Procédé d'injection d'oxydant pour gazéification de charbon souterrain
CN104675375A (zh) * 2015-02-06 2015-06-03 新奥气化采煤有限公司 一种地下气化方法及系统
CN104989365A (zh) * 2015-07-22 2015-10-21 攀钢集团攀枝花钢铁研究院有限公司 煤炭地下气化温度控制系统
CN107091114A (zh) * 2017-06-29 2017-08-25 辽宁工程技术大学 一种煤矿采空区束管保护装置及其使用方法
CN107165613A (zh) * 2017-07-07 2017-09-15 新疆国利衡清洁能源科技有限公司 一种煤炭地下气化矿井式气化炉安全保障系统及实施方法
CN110821544A (zh) * 2018-08-14 2020-02-21 柴乔森 矿井内自点火煤孔煤层气化炉式采区
CN112412518A (zh) * 2020-10-16 2021-02-26 湖南长院悦诚装备有限公司 一种隧道掌子面循环供风系统
CN112412518B (zh) * 2020-10-16 2023-06-09 湖南长院悦诚装备有限公司 一种隧道掌子面循环供风系统

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Publication number Publication date
CN1197153A (zh) 1998-10-28
CN1320253C (zh) 2007-06-06
AU4028999A (en) 1999-12-20

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