CN104696005B - The method of sequestration of carbon dioxide extraction residual coal bed gas is worked in coordination with in old dead zone, colliery - Google Patents
The method of sequestration of carbon dioxide extraction residual coal bed gas is worked in coordination with in old dead zone, colliery Download PDFInfo
- Publication number
- CN104696005B CN104696005B CN201510055353.6A CN201510055353A CN104696005B CN 104696005 B CN104696005 B CN 104696005B CN 201510055353 A CN201510055353 A CN 201510055353A CN 104696005 B CN104696005 B CN 104696005B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- goaf
- bed gas
- coal bed
- slot
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Treating Waste Gases (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The method of sequestration of carbon dioxide extraction residual coal bed gas is worked in coordination with in old dead zone, colliery; during working face extraction; pipeline is laid bottom stope drift active workings; slot is axially offered at a certain distance along pipeline; baffle plate is set at slot two ends, and on slot, is wound around high-pressure hose, by injecting the water of certain pressure in high-pressure hose; pipeline carries out " allow pressure " protection, and in preventing goaf, broken coal petrography destroys pipeline and blocking pore.After working face extraction terminates, set fire dam stopping adopting at line, by pipeline communication to ground, and by ground to the construction drilling well of top, goaf.In goaf, CO is injected along pipeline by ground2, due to CO2Density is more than CH4, and the broken coal petrography left over bottom goaf is to CO2Adsorptivity higher, the originally CH of absorption4It is displaced, gathers at top, goaf, and carried out extraction by drilling well.This method has the double benefit that carbon dioxide sequestration develops with residual coal bed gas.
Description
Technical field
The present invention relates to a kind of carbon dioxide sequestration and the method for residual coal bed gas extraction, be particularly suited for old dead zone, colliery
Collaborative sequestration of carbon dioxide and exploitation residual coal bed gas.
Background technology
Along with global warming, as the CO of Main Greenhouse effect gas2Handling problems has become whole world related science
The focus that family pays close attention to.In order to solve CO2The disaster bringing environment for human survival, geological disposal is acknowledged as solving greenhouse gas
One of effective way of body environmental impact issues.Wherein deep unminable coal seams stores CO2It is considered as most economical CO2Place
Put mode, by injecting CO in unworkable coal seam2, not only can geological storage CO2, also can be to clean energy resource-coal bed gas (CH4)
Reclaim.
But along with the fast development of technology, these unworkable coal seams following will become to adopt, its CO brought2
Outstanding problem will compare CH4Prominent even more serious.
The excellent gas storage tank that the old dead zone of large area that coal mining is brought is the most natural, is the most also to threaten
The major hazard source of safety in production, a large amount of high concentration gas wherein stored are at the effect of ventilation negative pressure and atmospheric pressure change
In the case of, may by fire dam or entrance exploiting field, coal column crack or mine laneway, increase ventilation burden and dangerous because of
Element.Therefore, the extraction for old dead zone gas is the most necessary, if simultaneously the most in addition rational exploitation and utilization, its abundant high concentration watt
The exploitation of coal gas industry is extremely important by this.The gas pumping of the old dead zone of China's coal-mine is unsatisfactory at present,
Therefore it is badly in need of seeking one and can rationally seal CO up for safekeeping2The method that can improve again old dead zone gas pumping rate.
Summary of the invention
The old dead zone that it is an object of the invention to solve carbon dioxide is sealed up for safekeeping and remains coal bed gas extraction effect in old dead zone
The problem that rate is relatively low, it is provided that the method for sequestration of carbon dioxide extraction residual coal bed gas is worked in coordination with in old dead zone, a kind of colliery.
Technical scheme: the method for sequestration of carbon dioxide extraction residual coal bed gas is worked in coordination with in old dead zone, colliery, specifically
Step is as follows:
During a, working face extraction, at away from open-off cut 5～10m start lay bottom stope drift active workings a diameter of 30～
The pipeline of 50cm, pipe wall is provided with 4 axially in parallel and symmetrical with pipeline a length of 1～3m, width every 10～20m
It is the slot of 0.5～3cm, and is provided with the baffle plate of a height of 15～25cm at slot two ends.
B, on slot tight coiling diameter be 5～15cm, comprcssive strength be 5～10MPa high-pressure hose.When being tied with height
When the pipeline of pressure flexible pipe fully enters goaf, injecting the water under high pressure of 2～5MPa in high-pressure hose, water filling ties up height after terminating
Pressure flexible pipe water filling port.
After c, working face extraction terminate, it is provided with, stopping adopting, the fire dam that thickness is 2～5m at line.Pipeline is through fire dam and connects
It is connected to ground, with CO2Air accumulator connects, and air accumulator gas outlet is provided with the first valve.
D, by ground every 200～300m along drilling well of constructing downwards in the middle part of goaf, until borehole bottom is on goaf
Portion 20～40m, is inserted into drainage tube by ground to drilling well, and drainage tube upper end is provided with the second valve.After sealing drilling well-head, take out
Adopt pipe to be connected with pumping plant.
E, open the first valve, by CO2Air accumulator injects CO along pipeline in goaf2.Open the second valve to start simultaneously
By CO in extraction goaf2The residual coal bed gas displaced.
F, as the CO in drainage tube2When concentration is higher than 10%, close the first valve and the second valve, stop injecting CO2With take out
Adopt residual coal bed gas.
Beneficial effects of the present invention:
(1) use high-voltage flexible pillar technology, by injecting the water of certain pressure in flexible pipe, carry out " allowing to pipeline
Pressure " protection, prevent broken coal petrography from destroying pipeline and blocking pore；
(2) CO is used2Density is more than CH4And top, goaf fractured coal and rock is to CO2The bigger characteristic of adsorptivity,
CO is being injected in goaf2During, CO2First lower goaf space is occupied, the CH of fractured coal and rock absorption originally4
It is displaced, the most upwards migrates to top, goaf and gather, now by drilling well by CH in goaf4Extraction goes out, and greatly carries
High goaf gas extraction efficiency；
(3) by CO2Seal to colliery old dead zone up for safekeeping, not only reduce the CO of discharge in air2Amount, alleviates greenhouse effect, with
Time can effectively suppress old dead zone natural combustion of remaining coal phenomenon, enhance mine safety；
(4) the outcast residual coal bed gas resource of script in goaf is developed and utilized, there is carbon dioxide sequestration
Double benefit with residual coal bed gas resources development and utilization.
Accompanying drawing explanation
Fig. 1 is laying pipeline schematic diagram during working face extraction
Fig. 2 is the principle schematic of the present invention
Fig. 3 is pipeline slot schematic diagram
Fig. 4 is A A profile in Fig. 3
In figure: 1 work surface, 2 open-off cuts, 3 stope drift active workings, 4 pipelines, 5 slots,
6 baffle plates, 7 high-pressure hoses, 8 goafs, 9 stop adopting line, 10 fire dams,
11 ground, 12 CO2Air accumulator, 13 first valves, 14 drilling wells, 15 pumping plants,
16 drainage tubes, 17 second valves.
Detailed description of the invention
Below in conjunction with the accompanying drawings the example of the present invention is further described:
The old dead zone, colliery of the present invention is worked in coordination with sequestration of carbon dioxide and is developed residual coal seam gas method: work surface (1) back production
During, at open-off cut (2) 5～10m, start to lay the pipeline (4) of a diameter of 30～50cm, edge in stope drift active workings (3) bottom
On the tube wall of pipeline (4) length direction every 10～20m be provided with pipeline (4) axially in parallel and symmetrical 4 a length of 1～
The slot (5) of 3m, a width of 0.5～3cm, and the baffle plate (6) of a height of 15～25cm it is provided with at slot (5) two ends.On slot (5)
Compact winding a diameter of 5～15cm, comprcssive strength are the high-pressure hose (7) of 5～10MPa.When the pipeline being tied with high-pressure hose (7)
(4) when fully entering goaf (8), inject the water under high pressure of 2～5MPa in the high-pressure hose (7), pipeline (4) is carried out " allow pressure "
Protection, prevents broken coal petrography from destroying pipeline (4) and blocking pore, and high-pressure hose (7) is tied up in water filling after terminating.Work surface (1) returns
After adopting end, it is provided with, stopping adopting line (9) place, the fire dam (10) that thickness is 2～5m.Pipeline (4) is through fire dam (10) and is connected to
Ground (11), with CO2Air accumulator (12) connects, and air accumulator (12) gas outlet is provided with the first valve (13).By ground (11) every
200～300m construct downwards drilling well (14) along goaf (8) middle part, until drilling well (14) bottom away from goaf (8) top 20～
40m, is inserted into drainage tube (16) by ground to drilling well (14), and drainage tube (16) is provided with the second valve (17).Seal drilling well
(14), after well head, drainage tube (16) is connected with pumping plant (15).Open the first valve (13) by CO2Air accumulator (12) is along pipeline (4)
CO2 is injected in goaf (8).In injection process, due to CO2Density is more than CH4, CO2First goaf (8) bottom is occupied empty
Between, crush coal petrography to CO because of goaf (8) top again2Adsorptivity higher, the originally CH of absorption4It is displaced, the most upwards transports
Move to the accumulation of goaf (8) top.Open the second valve (17) and start residual coal bed gas in extraction goaf (8).Work as drainage tube
(16) CO in2When concentration is higher than 10%, close the first valve (13) and the second valve (17), stop injecting CO2Remain with extraction
Coal bed gas.
Claims (1)
1. the method that sequestration of carbon dioxide extraction residual coal bed gas is worked in coordination with in old dead zone, colliery, it is characterised in that comprise the steps:
In a, work surface (1) exploitation process, start to lay diameter in stope drift active workings (3) bottom at away from open-off cut (2) 5～10m
It is the pipeline (4) of 30～50cm, the tube wall of pipeline (4) length direction is provided with every 10～20m axially in parallel with pipeline (4)
And 4 a length of 1 symmetrical～the slot (5) of 3m, a width of 0.5～3cm, and be provided with at slot (5) two ends a height of 15～
The baffle plate (6) of 25cm；
B, the upper tight coiling diameter of slot (5) be 5～15cm, comprcssive strength be 5～10MPa high-pressure hose (7), when being tied with
When the pipeline (4) of high-pressure hose (7) fully enters goaf (8), in high-pressure hose (7), inject the water under high pressure of 2～5MPa, note
Water ties up high-pressure hose (7) water filling port after terminating；
After c, work surface (1) back production terminate, being provided with, stopping adopting line (9) place, the fire dam (10) that thickness is 2～5m, pipeline (4) passes
Fire dam (10) is also connected to ground (11), with CO2Air accumulator (12) connects, CO2Air accumulator (12) gas outlet is provided with the first valve
(13)；
D, constructed downwards drilling well (14) along goaf (8) middle part every 200～300m by ground (11), until drilling well (14) bottom
Away from goaf (8) top 20～40m, ground (11) it is inserted into drainage tube (16), and drainage tube (16) upper end to drilling well (14)
It is provided with the second valve (17);
After sealing drilling well (14) well head, drainage tube (16) is connected with pumping plant (15)；
E, open the first valve (13), by CO2Air accumulator (12) injects CO along pipeline (4) in goaf (8)2, open simultaneously
It is interior by CO that two valves (17) start extraction goaf (8)2The residual coal bed gas displaced；
F, as the CO in drainage tube (16)2When concentration is higher than 10%, close the first valve (13) and the second valve (17), stop injecting
CO2Coal bed gas is remained with extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055353.6A CN104696005B (en) | 2015-02-03 | 2015-02-03 | The method of sequestration of carbon dioxide extraction residual coal bed gas is worked in coordination with in old dead zone, colliery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055353.6A CN104696005B (en) | 2015-02-03 | 2015-02-03 | The method of sequestration of carbon dioxide extraction residual coal bed gas is worked in coordination with in old dead zone, colliery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104696005A CN104696005A (en) | 2015-06-10 |
| CN104696005B true CN104696005B (en) | 2016-08-31 |
Family
ID=53343505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510055353.6A Active CN104696005B (en) | 2015-02-03 | 2015-02-03 | The method of sequestration of carbon dioxide extraction residual coal bed gas is worked in coordination with in old dead zone, colliery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104696005B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797570B (en) * | 2016-03-18 | 2018-03-06 | 昆明理工大学 | A kind of method for strengthening coal body carbon dioxide adsorption performance |
| CN109488269B (en) * | 2018-12-28 | 2020-11-17 | 吕梁学院 | Carbon dioxide coal bed gas vibration anti-reflection device |
| CN110608022A (en) * | 2019-08-28 | 2019-12-24 | 中联煤层气有限责任公司 | Carbon dioxide landfill method for increasing yield of coal bed gas reservoir |
| CN112943347B (en) * | 2021-03-17 | 2022-07-05 | 太原理工大学 | Multi-source gas efficient pre-extraction rapid outburst elimination method in middle-layer residual coal re-mining tunneling process |
| CN115030770A (en) * | 2021-04-15 | 2022-09-09 | 重庆工程职业技术学院 | Ventilation method in gas extraction operation in mine |
| CN115492557B (en) * | 2022-10-18 | 2023-11-07 | 中国矿业大学 | Deep non-recoverable coal seam CO 2 Sealing and storing device and method for extracting coalbed methane under negative pressure |
| CN116575900B (en) * | 2023-07-07 | 2023-09-15 | 太原理工大学 | In-situ coal partition controllable gasification hydrogen production and CO 2 Sealing and storing integrated method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418679B (en) * | 2008-11-12 | 2012-01-25 | 太原理工大学 | Method for pumping coalbed gas by heating coal bed |
| RU2445462C1 (en) * | 2010-10-26 | 2012-03-20 | Анатолий Николаевич Осипов | Method of mine field degassing |
| CN102226412B (en) * | 2011-05-24 | 2013-06-05 | 中国矿业大学 | Underground dark mining drilling well gas extraction method |
| CN102587958A (en) * | 2012-03-09 | 2012-07-18 | 山西蓝焰煤层气工程研究有限责任公司 | Method for mining coal seam gas |
| CN103670338B (en) * | 2012-09-21 | 2016-06-15 | 新奥气化采煤有限公司 | A kind of coal bed gas and coal mining method altogether |
| CN102877819B (en) * | 2012-10-11 | 2015-04-22 | 河南理工大学 | Carbon dioxide cyclic injection system of coal-bed gas well |
-
2015
- 2015-02-03 CN CN201510055353.6A patent/CN104696005B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104696005A (en) | 2015-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104696005B (en) | The method of sequestration of carbon dioxide extraction residual coal bed gas is worked in coordination with in old dead zone, colliery | |
| CN110145233B (en) | Rock burst coal seam drilling-cutting-pressing-pumping-injecting multi-disaster cooperative prevention and control method | |
| CN104695908B (en) | A kind of method that old dead zone in ground well drainage colliery remains coal bed gas | |
| CN102094670B (en) | Method for replacing mine goaf gas with carbon dioxide | |
| CN103924945B (en) | The high-pressure slip-casting technique of rich water weathering fissures rock stratum under the Moderate and Thick Unconsolidated Formation of colliery | |
| CN106437632B (en) | A kind of old goaf gas pumping method in colliery | |
| CN102996159A (en) | Multiphase medium plugging device and method for gas extraction drill hole | |
| CN103867229A (en) | Coal mine large-mining-depth and next-group coal exploitation water control comprehensive treatment method | |
| CN104696006B (en) | Ground drilling penetrates the method for abandoned coal pillar extraction multilamellar old dead zone remnants coal bed gas | |
| CN103437339A (en) | Construction method for sealing karst cave near trench wall of underground continuous wall in karst stratum | |
| CN111927456B (en) | Dynamic-loading deep mining area coal pillar instability unloading-fixing-letting multistage prevention and control method | |
| CN109869152B (en) | Mining method for reserved roadway of coal and gas outburst coal seam | |
| CN102748064A (en) | Large-mining-height fully-mechanized caving face gas control method | |
| CN104234750A (en) | Rapid self-built movable sluice wall of mine and construction method of rapid self-built movable sluice wall | |
| CN106050302A (en) | Constructing system and method for coal mine permanent sealing wall | |
| CN105804786A (en) | Method for layer penetrating, drilling, pressing punching and permeability improving of soft coal seam floor | |
| CN113958365A (en) | Short and long wall discontinuous filling mining cooperated with basic group solid waste CO2Sealing system and method | |
| CN205577925U (en) | A layer drilling hole sealing device is worn in gas stifled and middle water seal in two for coal mine | |
| RU2387784C1 (en) | Method for preliminary degassing of coal beds | |
| CN112593912B (en) | Coal bed gas horizontal well power expanding, pressure relief and permeability increase extraction method | |
| EA013445B1 (en) | Coalfield underground mining and method therefor | |
| CN205477518U (en) | Boring press seal hole device in colliery | |
| RU2398971C1 (en) | Method for preliminary degassing of coal beds | |
| CN112412422A (en) | Freezing fracturing cooperated coal seam hydraulic cavitation permeability increasing and pumping promoting method | |
| CN105781606A (en) | Method for sealing large-dip-angle downward coal-seam-penetrating gas extraction-drainage drill hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |