CN104018813A - Coal bed gas exploitation method - Google Patents
Coal bed gas exploitation method Download PDFInfo
- Publication number
- CN104018813A CN104018813A CN201410239049.2A CN201410239049A CN104018813A CN 104018813 A CN104018813 A CN 104018813A CN 201410239049 A CN201410239049 A CN 201410239049A CN 104018813 A CN104018813 A CN 104018813A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- well
- coal bed
- gas
- straight well
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
- Carbon And Carbon Compounds (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to the technical field of coal bed gas exploitation and particularly relates to a coal bed gas exploitation method. According to the coal bed gas exploitation method, on one hand, electricity is generated through a high-concentration gas power generating set by using coal bed gas produced through a horizontal well to maintain the daily drainage and exploitation operation of a vertical shaft and the operation of a peripheral compressed natural gas pressure station; on the other hand, after carbon dioxide in the tail gas of the high-concentration gas power generating set is purified and compressed into a certain amount of liquid carbon dioxide through a carbon dioxide processing and pumping device, the liquid carbon dioxide is pumped into the vertical well in an intermittent injection mode, and thus the double effects of environment protection and production increase are achieved.
Description
Technical field
The invention belongs to Coal-seam Gas Recovery Technologies field, be specifically related to a kind of coal bed methane exploring method.
Background technology
From in June, 2006 < of General Office of the State Council < about accelerating clearly to propose in some suggestion > > of coal bed gas (coal mine gas) methane drainage and utilization project since " must adhere to first taking out afterwards adopt, administer and utilize the policy developing simultaneously ", China has started ground coal bed gas exploration and development agitation, according to interrelated data, show, China's coal bed gas well has reached 15000 mouthfuls at present, but wherein less than half, give vent to anger, average product only has 400～600 sides, does not far reach the value of business development.
To sum up, how to improve coal bed gas well yield and reduce coal bed gas individual well cost, become the key of coal bed gas commercial development.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of coal bed methane exploring method that improves coal bed gas well yield and reduce coal bed gas individual well cost is provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of coal bed methane exploring method, and its step is as follows:
One, from ground, first implement a bite straight well, then at this straight well periphery, be drilled with water horizontal well and dock with described straight well destination layer;
Two, in straight well, be lowered to suction pump and implement to draw water operation, until horizontal well enters the extensive gas production stage;
Three, now at place, horizontal well gas outlet, a set of high concentration fuel gas generation unit is installed, is utilized the coal bed gas of horizontal well output to generate electricity by high concentration fuel gas generation unit, to maintain the running of the daily mining operation of straight well and periphery compressed natural gas pressurizing point;
Four, utilize carbon dioxide processing and pump into device by the carbon dioxide purification in high concentration fuel gas generation unit tail gas, recompressing into liquid;
Five, when liquid carbon dioxide is hoarded after 10～20 tons, adopt batch (-type) injection mode, pump into liquid carbon dioxide by straight well well head every day, continues to pump into liquid carbon dioxide 10～20 days, then close straight well well head and stop daily extraction operation;
Six,, after the carbon dioxide content in the output gas of straight well ground drops to 5%, continue the daily mining operation of straight well;
Seven, utilize carbon dioxide processing and pump into device continuation manufacture liquid CO 2, until the amount of liquid carbon dioxide is enough to carry out operation next time.
Described straight well docks with horizontal well and adopts the U-shaped well routine techniques of current coal bed gas.
The required coal bed gas amount of described high concentration fuel gas generation unit depends on carbon dioxide processing and pumps into device, the daily mining of straight well and periphery compressed natural gas station running power demand, remains coal bed gas for the defeated utilization of downstream collection.
Described carbon dioxide is processed and is pumped into device and can purify, compresses and pump into carbon dioxide.
Beneficial effect of the present invention:
1, fuel gas generation unit utilize alternative field diesel generation, reduce costs to a certain extent;
2, the carbon dioxide producing in fuel gas generation unit power generation process pumps in coal seam, can reach the double effect of environmentally friendly yield-increasing.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is principle of the invention schematic diagram.
In figure: 1, straight well, 2, horizontal well, 3, high concentration fuel gas generation unit, 4, carbon dioxide processing and pump into device.
The specific embodiment
Referring to Fig. 1, a kind of coal bed methane exploring method that the present invention proposes, its concrete steps are as follows:
One, from ground, first implement a bite straight well 1, then at this straight well 1 periphery, be drilled with water horizontal well 2 and dock with described straight well 1 destination layer;
Two, in straight well 1, be lowered to suction pump and implement to draw water operation, until horizontal well 2 enters the extensive gas production stage;
Three, now at horizontal well 2 places, gas outlet, a set of high concentration fuel gas generation unit 3 is installed, utilize the coal bed gas of horizontal well 2 outputs to generate electricity by high concentration fuel gas generation unit 3, to maintain the running of the daily mining operation of straight well 1 and periphery compressed natural gas pressurizing point;
Four, utilize carbon dioxide processing and pump into device 4 by the carbon dioxide purification in high concentration fuel gas generation unit 3 tail gas, recompressing into liquid;
Five, when liquid carbon dioxide is hoarded after 10～20 tons, adopt batch (-type) injection mode, pump into liquid carbon dioxide by straight well 1 well head every day, continues to pump into liquid carbon dioxide 10～20 days, then close straight well 1 well head and stop daily extraction operation;
Six,, after the carbon dioxide content in straight well 1 ground output gas drops to 5%, continue the daily mining operation of straight well 1;
Seven, utilize carbon dioxide processing and pump into device 4 continuation manufacture liquid CO 2s, until the amount of liquid carbon dioxide is enough to carry out operation next time.
Described straight well 1 docks with horizontal well 2 and adopts the U-shaped well routine techniques of current coal bed gas.
The required coal bed gas amount of described high concentration fuel gas generation unit 3 depends on carbon dioxide processing and pumps into device 4, the daily mining of straight well 1 and periphery compressed natural gas station running power demand, remains coal bed gas for the defeated utilization of downstream collection.
Described carbon dioxide is processed and is pumped into device 4 and can purify, compresses and pump into carbon dioxide.
You need to add is that, this method is also applicable to single straight well or horizontal well, is not limited to the U-shaped well described in this method.
In addition, it should be noted that the art professional and technical personnel also knows, patent of the present invention is not limited to coal bed gas field, is equally applicable to shale gas field.
Above-mentioned example only illustrates simultaneously, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And the apparent variation of being amplified out thus or change are still among the protection domain in patent of the present invention.
Claims (1)
1. a coal bed methane exploring method, is characterized in that,
One, from ground, first implement a bite straight well (1), then at this straight well (1) periphery, be drilled with water horizontal well (2) and dock with described straight well (1) destination layer;
Two, in straight well (1), be lowered to suction pump and implement to draw water operation, until horizontal well (2) enters the extensive gas production stage;
Three, now at place, horizontal well (2) gas outlet, a set of high concentration fuel gas generation unit (3) is installed, utilize the coal bed gas of horizontal well (2) output to generate electricity by high concentration fuel gas generation unit (3), to maintain the running of the daily mining operation of straight well (1) and periphery compressed natural gas pressurizing point;
Four, utilize carbon dioxide processing and pump into device (4) by the carbon dioxide purification in high concentration fuel gas generation unit (3) tail gas, recompressing into liquid;
Five, when liquid carbon dioxide is hoarded after 10～20 tons, adopt batch (-type) injection mode, pump into liquid carbon dioxide by straight well (1) well head every day, continues to pump into liquid carbon dioxide 10～20 days, then close straight well (1) well head and stop daily extraction operation;
Six,, after the carbon dioxide content in the output gas of straight well (1) ground drops to 5%, continue the daily mining operation of straight well (1);
Seven, utilize carbon dioxide processing and pump into device (4) continuation manufacture liquid CO 2, until the amount of liquid carbon dioxide is enough to carry out operation next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410239049.2A CN104018813A (en) | 2014-05-31 | 2014-05-31 | Coal bed gas exploitation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410239049.2A CN104018813A (en) | 2014-05-31 | 2014-05-31 | Coal bed gas exploitation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104018813A true CN104018813A (en) | 2014-09-03 |
Family
ID=51435774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410239049.2A Pending CN104018813A (en) | 2014-05-31 | 2014-05-31 | Coal bed gas exploitation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104018813A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106089290A (en) * | 2016-06-21 | 2016-11-09 | 太原理工大学 | The old dead zone of a kind of collaborative extraction tool post formula and the method for lower coal seam coal bed gas |
| CN106089291A (en) * | 2016-06-21 | 2016-11-09 | 太原理工大学 | A kind of collaborative extraction is caving the old dead zone of formula and the method for lower coal seam coal bed gas |
| CN107558958A (en) * | 2017-07-21 | 2018-01-09 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of discharge and mining method of hypotonic coal seam reservoirs coal bed gas horizontal well |
| CN109538167A (en) * | 2018-09-30 | 2019-03-29 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of method that coal bed gas U-shaped well is segmented mining step by step |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001294873A (en) * | 2000-04-10 | 2001-10-23 | Tokyo Electric Power Co Inc:The | Method for converting cola into fuel for power generation and equipment therefor |
| CN1582366A (en) * | 2001-11-09 | 2005-02-16 | 川崎重工业株式会社 | Gas turbine system comprising closed system of fuel and combustion gas using underground coal layer |
| EP1521719A2 (en) * | 2001-12-03 | 2005-04-13 | Clean Energy Systems, Inc. | Coal and syngas fueled power generation systems featuring zero atmospheric emissions |
| EP1687518A1 (en) * | 2003-09-30 | 2006-08-09 | BHP Billiton Innovation Pty Ltd | Power generation |
| CN101122259A (en) * | 2006-12-12 | 2008-02-13 | 邢一崧 | Coalbed gas and integral combined circulated polygeneration generation system |
| CN101285004A (en) * | 2007-04-11 | 2008-10-15 | 中国科学院工程热物理研究所 | Multifunctional energy resource system |
| US7650939B2 (en) * | 2007-05-20 | 2010-01-26 | Pioneer Energy, Inc. | Portable and modular system for extracting petroleum and generating power |
| CA2666145A1 (en) * | 2009-03-03 | 2010-09-03 | Energy Independence Of America Corp. | Method for recovering energy in-situ from underground resources and upgrading such energy resources above ground |
| CN102168545A (en) * | 2011-03-30 | 2011-08-31 | 中国石油大学(北京) | Coiled tubing supercritical CO2 jet fracturing method |
| CN102937016A (en) * | 2012-10-29 | 2013-02-20 | 中国地质大学（武汉） | Method for enhancing recovery ratio of coal-bed gas by injecting hot carbon dioxide into coal bed |
| CN103016202A (en) * | 2012-12-20 | 2013-04-03 | 湖南宜化化工有限责任公司 | Method for generating electricity by using coal mine low-concentration gas |
| CN103670338A (en) * | 2012-09-21 | 2014-03-26 | 新奥气化采煤有限公司 | Method for extracting coalbed methane and coal together |
-
2014
- 2014-05-31 CN CN201410239049.2A patent/CN104018813A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001294873A (en) * | 2000-04-10 | 2001-10-23 | Tokyo Electric Power Co Inc:The | Method for converting cola into fuel for power generation and equipment therefor |
| CN1582366A (en) * | 2001-11-09 | 2005-02-16 | 川崎重工业株式会社 | Gas turbine system comprising closed system of fuel and combustion gas using underground coal layer |
| EP1521719A2 (en) * | 2001-12-03 | 2005-04-13 | Clean Energy Systems, Inc. | Coal and syngas fueled power generation systems featuring zero atmospheric emissions |
| EP1687518A1 (en) * | 2003-09-30 | 2006-08-09 | BHP Billiton Innovation Pty Ltd | Power generation |
| CN101122259A (en) * | 2006-12-12 | 2008-02-13 | 邢一崧 | Coalbed gas and integral combined circulated polygeneration generation system |
| CN101285004A (en) * | 2007-04-11 | 2008-10-15 | 中国科学院工程热物理研究所 | Multifunctional energy resource system |
| US7650939B2 (en) * | 2007-05-20 | 2010-01-26 | Pioneer Energy, Inc. | Portable and modular system for extracting petroleum and generating power |
| CA2666145A1 (en) * | 2009-03-03 | 2010-09-03 | Energy Independence Of America Corp. | Method for recovering energy in-situ from underground resources and upgrading such energy resources above ground |
| CN102168545A (en) * | 2011-03-30 | 2011-08-31 | 中国石油大学(北京) | Coiled tubing supercritical CO2 jet fracturing method |
| CN103670338A (en) * | 2012-09-21 | 2014-03-26 | 新奥气化采煤有限公司 | Method for extracting coalbed methane and coal together |
| CN102937016A (en) * | 2012-10-29 | 2013-02-20 | 中国地质大学（武汉） | Method for enhancing recovery ratio of coal-bed gas by injecting hot carbon dioxide into coal bed |
| CN103016202A (en) * | 2012-12-20 | 2013-04-03 | 湖南宜化化工有限责任公司 | Method for generating electricity by using coal mine low-concentration gas |
Non-Patent Citations (2)
| Title |
|---|
| 叶建平等: "沁水盆地南部注二氧化碳提高煤层气采收率", 《石油学报》 * |
| 郑瑞等: "国内外煤层气钻完井技术进展", 《内蒙古石油化工》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106089290A (en) * | 2016-06-21 | 2016-11-09 | 太原理工大学 | The old dead zone of a kind of collaborative extraction tool post formula and the method for lower coal seam coal bed gas |
| CN106089291A (en) * | 2016-06-21 | 2016-11-09 | 太原理工大学 | A kind of collaborative extraction is caving the old dead zone of formula and the method for lower coal seam coal bed gas |
| CN106089291B (en) * | 2016-06-21 | 2018-03-02 | 太原理工大学 | A kind of method for cooperateing with extraction to be caving the old dead zone of formula and lower coal seam coal bed gas |
| CN106089290B (en) * | 2016-06-21 | 2018-03-02 | 太原理工大学 | A kind of method for cooperateing with the old dead zone of extraction tool post formula and lower coal seam coal bed gas |
| 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 |
| CN107558958A (en) * | 2017-07-21 | 2018-01-09 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of discharge and mining method of hypotonic coal seam reservoirs coal bed gas horizontal well |
| CN109538167A (en) * | 2018-09-30 | 2019-03-29 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of method that coal bed gas U-shaped well is segmented mining step by step |
| CN109538167B (en) * | 2018-09-30 | 2021-11-12 | 山西晋城无烟煤矿业集团有限责任公司 | Method for sectional step-by-step drainage and production of coal bed gas U-shaped well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104018813A (en) | Coal bed gas exploitation method | |
| CN204436342U (en) | Coal bed gas negative pressure on ground drainage device | |
| WO2009016948A1 (en) | Promotion of methane hydrate decomposition and methane gas collecting system | |
| CN103233709B (en) | Super heavy oil deposit exploiting carbon capture, utilization and storage (CCUS) system and method based on CO2 assisted steam assisted gravity drainage (SAGD) | |
| CN105064959A (en) | Method for green extraction of seabed unstratlfied rock natural gas hydrate | |
| CN106437653B (en) | A kind of hydrate exploitation and the carbon dioxide sequestration integrated processes of note quick lime and carbon dioxide process | |
| CN106522958A (en) | Cutter exploitation method of seabed natural gas hydrates | |
| CN108086959A (en) | A kind of water erosion method exploiting ocean natural gas hydrates method | |
| CN106761607A (en) | A kind of method and device of the auxiliary Hot swapping exploitation of gas hydrate of flue gas | |
| CN105063093A (en) | Method for preparation of coalbed methane from microorganisms | |
| CN107058451B (en) | Method for degrading and converting low-rank coal by using microbial compound inoculant to increase coal bed methane | |
| CN206562925U (en) | A kind of device of the auxiliary Hot swapping exploitation of gas hydrate of flue gas | |
| CN102900407B (en) | One utilizes CO 2drive the remaining CO of rear oil reservoir 2the method of Reforming Methane | |
| CN103775042A (en) | System and method for producing high-temperature high-pressure steam and flue gas on basis of oxygen-enriched boiler | |
| CN216976515U (en) | Oil-gas mixed transportation device | |
| CN105317411A (en) | High-pressure, oxygen-free, yield-increasing and plug-release gas injection device of CBM (Coal Bed Methane) well and using method of high-pressure, oxygen-free, yield-increasing and plug-release gas injection device | |
| CN1587642A (en) | Method and device for sea natural gas hydrate production | |
| CN115977595A (en) | Deep lithium-rich brine mining system and method | |
| CN215369806U (en) | System for geological storage of carbon dioxide and biological production increase of coal bed gas | |
| CN115611295A (en) | Mine resource utilization system | |
| CN204476649U (en) | A kind of water gravity force energy system | |
| CN202250892U (en) | High-water-level self-absorption device for centrifugal pumps | |
| CN202325628U (en) | Coal-mine underground roadway type coal-seam gas-fracturing equipment | |
| CN204493096U (en) | Air pulsing formula coal-bed flooding pump | |
| CN217052150U (en) | Goaf coalbed methane mining and separating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Lin Cheng Xi Lu Lake District 550081 Guizhou city of Guiyang province No. 95 seven floor Applicant after: Guizhou Pan Jiang cbm development utilizes Co., Ltd Address before: 550081 Guizhou Province, Guiyang City Lake District century Jin Yuan shopping center business building D block 15 layer Applicant before: Guizhou Pan Jiang cbm development utilizes Co., Ltd |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140903 |