CN104018813A - Coal bed gas exploitation method - Google Patents

Coal bed gas exploitation method Download PDF

Info

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
Application number
CN201410239049.2A
Other languages
Chinese (zh)
Inventor
叶姜
杨世梁
邓鸢
刘勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Pan Jiang Cbm Development Utilizes Co Ltd
Original Assignee
Guizhou Pan Jiang Cbm Development Utilizes Co Ltd
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 Guizhou Pan Jiang Cbm Development Utilizes Co Ltd filed Critical Guizhou Pan Jiang Cbm Development Utilizes Co Ltd
Priority to CN201410239049.2A priority Critical patent/CN104018813A/en
Publication of CN104018813A publication Critical patent/CN104018813A/en
Pending legal-status Critical Current

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

A kind of coal bed methane exploring method
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.
CN201410239049.2A 2014-05-31 2014-05-31 Coal bed gas exploitation method Pending CN104018813A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (12)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
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
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
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
CN103590795A (en) Method for integrating natural gas recovery efficiency increasing through CO2 waste gas reinjection with CO2 geological storage
CN103306714B (en) Gas control method for drilling hole and hole three-purpose in close-range coal seam group bottom drainage roadway
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
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
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
CN101122222A (en) Down-hole horizontal hole exploitation system for mixing gas displacing coal gas, and the method
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
CN1587642A (en) Method and device for sea natural gas hydrate production
CN202042989U (en) Multifunctional coaxial dual-head diaphragm pump motor
CN115977595A (en) Deep lithium-rich brine mining system and method
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
CN204252976U (en) A kind of two gas commingled producing well lower tubular column systems
CN204493096U (en) Air pulsing formula coal-bed flooding pump

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