CN107339079A - A kind of CO2Plugging device and its method for blocking - Google Patents
A kind of CO2Plugging device and its method for blocking Download PDFInfo
- Publication number
- CN107339079A CN107339079A CN201710595748.4A CN201710595748A CN107339079A CN 107339079 A CN107339079 A CN 107339079A CN 201710595748 A CN201710595748 A CN 201710595748A CN 107339079 A CN107339079 A CN 107339079A
- Authority
- CN
- China
- Prior art keywords
- high pressure
- pressure resistant
- rubber
- seal plug
- conduit
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
Abstract
The invention belongs to Coal-seam Gas Recovery Technologies field, specially a kind of CO2Plugging device and its method for blocking, the device include seal plug, high-pressure liquid CO after rubber2Seal plug and fix bar before gas bomb, water supply installation, high pressure resistant conduit, rubber, fix bar one end passes through the fixation rod aperture on seal plug before rubber, the other end passes through the fixation rod aperture on seal plug after rubber, high pressure resistant tube at one end passes through the high pressure resistant guide hole on seal plug before rubber, and the other end of high pressure resistant conduit passes through high pressure resistant conduit control valve and high-pressure liquid CO after passing through the high pressure resistant guide hole after rubber on seal plug2Gas bomb connects, and high pressure resistant conduit remaining part carries out ring-wound around fix bar.The present invention utilizes liquid CO2Refrigeration device occluding member is freezed completely, can be good at realizing plugging effect, also compensate for domestic blank in this regard well.
Description
Technical field
The invention belongs to Coal-seam Gas Recovery Technologies field, specially a kind of CO2Plugging device and its method for blocking, the present invention
It is by high-pressure liquid CO2Gas bomb pours into CO to high pressure resistant conduit2, utilize liquid CO2Gasification is absorbed heat the aqueous water in device
Ice is cooled to, the high pressure resistant conduit of occluding member and the inside is all freezed, so as to realize to CO2Blocked.
Background technology
At present, because it is found that coal seam is to CO2Strong adsorptivity feature, and displacement coal seam therein can be replaced at high proportion
Gas, therefore increasing enterprise Selection utilization CO2Carry out coal-bed gas exploitation.And then utilizing CO2When carrying out coal-bed gas exploitation,
CO2Method for blocking be particularly important.At home, CO2When being blocked, conventional method is to pour into water in bag to be sealed
Stifled, this method is widely used but effect is not very notable, and domestic in coal-bed gas exploitation closure CO2This aspect is very
It is related to less.
The content of the invention
The CO when present invention is directed to coal-bed gas exploitation2Closure is difficult, gas leakage effect CO be present2The problem of replacing coal bed gas effect
And provide a kind of CO2Plugging device and its method for blocking.
The present invention adopts the following technical scheme that realization：A kind of CO2Seal plug after plugging device, including rubber,
High-pressure liquid CO2Seal plug and fix bar before gas bomb, water supply installation, high pressure resistant conduit, rubber, after rubber on seal plug
It is additionally provided with fixed rod aperture, high pressure resistant guide hole and water injection hole, is provided with fixed rod aperture and high pressure resistant before rubber on seal plug
Guide hole, high-pressure liquid CO2Gas cylinder control valve and cylinder pressure gauge are provided with gas bomb, fix bar one end passes through rubber
Fixation rod aperture on preceding seal plug, the other end are worn through the fixation rod aperture on seal plug after rubber, high pressure resistant tube at one end
Cross the high pressure resistant guide hole on seal plug before rubber, the other end of high pressure resistant conduit passes through the resistance to height on seal plug after rubber
Pass through high pressure resistant conduit control valve and high-pressure liquid CO after pressure guide hole2Gas bomb connects, and high pressure resistant conduit remaining part surrounds
Fix bar carries out ring-wound.
A kind of above-mentioned CO2The method for blocking of plugging device, comprises the following steps：
The first step, plugging device is installed：Seal plug before seal plug, rubber after rubber is put in coal inlet；
Second step, water-stop is filled to plugging device：The water pipe of water supply installation is linked into the water injection hole after rubber on seal plug,
The valve opened on water supply installation carries out water filling, after the water in plugging device fills, removes water injection pipe, will with a rubber stopper
Water injection hole is blocked；
3rd step, high-pressure liquid CO2Gas bomb supplies：High pressure resistant conduit control valve is opened, then turns on gas cylinder control valve
CO is poured into high pressure resistant conduit2Gas, due to gasification, CO2Gas can absorb during being circulated in high pressure resistant conduit
Substantial amounts of heat produces refrigeration, and the water outside conduit can slowly be frozen in, and finally connect the high pressure resistant conduit one of ring-wound
Rise and freeze；
4th step, stop supply, close high pressure resistant pipe joint：After freezing completely, gas cylinder control valve is closed, is removed
High-pressure liquid CO2Gas bomb, and immediately close high pressure resistant conduit control valve.
The present invention lives the aqueous water of certain volume by two rubber seal plug intermediate seals, is blocked up in two rubber seals
The high pressure resistant conduit of access at head, and the ring-wound in water, as high-pressure liquid CO2Gasification heat absorption, stream when flowing through high pressure resistant conduit
After spending certain time, aqueous water gradually forms ice, finally freezes device and then realizes closure function.Advantages of the present invention has：
1st, it is simple to operate, it is only necessary to two rubber plug interior sealings are lived to the water of certain volume, high pressure resistant conduit is accessed into liquid CO2I.e.
Can；2nd, it is easily controlled, as long as opening high-pressure liquid CO2Gas bomb, dosage is controlled to treat that aqueous water is all tied by cylinder pressure gauge
Cheng Bing, which freezes device, can just block CO completely2；3rd, cost is cheap, materials environmental protection；4th, safety, plugging effect are good.
Brief description of the drawings
Fig. 1 is the structural representation of plugging device.
Fig. 2 is plugging device partial schematic sectional view.
Fig. 3 is the structural representation of seal plug after rubber.
Fig. 4 is the structural representation of seal plug before rubber.
In figure：1- lithospheres, seal plug after 2- rubber, the high pressure resistant conduit control valves of 3-, 4- gas cylinder control valves, 5-
Cylinder pressure gauge, 6- high-pressure liquids CO2Gas bomb, 7- water supply installations, 8- aqueous waters, the high pressure resistant conduits of 9-, seal before 10- rubber
Plug, 11- fix bars, 12- coals hole, the high pressure resistant guide holes of 13-, 14- water injection holes, 15- fix rod aperture.
Embodiment
A kind of CO2Plugging device, seal plug 2, high-pressure liquid CO after rubber2Gas bomb 6, water supply installation 7, high pressure resistant lead
Seal plug 10 and fix bar 11 before pipe 9, rubber, fixed rod aperture 15, high pressure resistant conduit are additionally provided with seal plug 2 after rubber
Hole 13 and water injection hole 14, fixed rod aperture 15 and high pressure resistant guide hole 13, high-pressure liquid CO are provided with seal plug 10 before rubber2
Gas cylinder control valve 4 and cylinder pressure gauge 5 are provided with gas bomb 6, the one end of fix bar 11 passes through seal plug 10 before rubber
On fixation rod aperture 15, the other end passes through the fixation rod aperture 15 on seal plug 2 after rubber, and high pressure resistant one end of conduit 9 passes through rubber
High pressure resistant guide hole 13 before glue on seal plug 10, the other end of high pressure resistant conduit 9 pass through resistance on seal plug 2 after rubber
Pass through high pressure resistant conduit control valve 3 and high-pressure liquid CO behind high-pressure conduit hole 132Gas bomb 6 connects, high pressure resistant 9 remaining portion of conduit
Divide and carry out ring-wound around fix bar 11, the closer refrigeration of winding is better.
A kind of above-mentioned CO2The method for blocking of plugging device, comprises the following steps：
The first step, plugging device is installed：Seal plug 10 before seal plug after rubber 2, rubber is put in coal inlet 12；
Second step, water-stop is filled to plugging device：The water pipe of water supply installation 7 is linked into the water filling after rubber on seal plug 2
Hole 14, the valve opened on water supply installation 7 carry out water filling, after the water in plugging device fills, water injection pipe are removed, with one
Rubber stopper blocks water injection hole 14；
3rd step, high-pressure liquid CO2Gas bomb supplies：High pressure resistant conduit control valve 3 is opened, then turns on gas cylinder control valve
4 pour into CO to high pressure resistant conduit 92Gas, due to gasification, CO2Gas can be inhaled during being circulated in high pressure resistant conduit 9
Receive substantial amounts of heat and produce refrigeration, the water outside conduit can slowly be frozen in, and finally connect the high pressure resistant conduit 9 of ring-wound
Freeze together；The dosage of highly pressurised liquid can carry out equivalent experiment in advance, and the water for pouring into same volume passes through liquid CO2, wait water
How much dosage is observed when all freezing, therefore cooling time can directly directly be controlled according to the registration of cylinder pressure gauge 3 in this step；
4th step, stop supply, close high pressure resistant pipe joint：After freezing completely, gas cylinder control valve 4 is closed, is taken
Lower high-pressure liquid CO2Gas bomb 6, and immediately close high pressure resistant conduit control valve 3.
Claims (2)
- A kind of 1. CO2Plugging device, it is characterised in that seal plug after rubber（2）, high-pressure liquid CO2Gas bomb（6）, supply water dress Put（7）, high pressure resistant conduit（9）, seal plug before rubber（10）And fix bar（11）, seal plug after rubber（2）On also set up There is fixed rod aperture（15）, high pressure resistant guide hole（13）And water injection hole（14）, seal plug before rubber（10）On be provided with fix bar Hole（15）With high pressure resistant guide hole（13）, high-pressure liquid CO2Gas bomb（6）On be provided with gas cylinder control valve（4）And gas cylinder Pressure gauge（5）, fix bar（11）One end passes through seal plug before rubber（10）On fixation rod aperture（15）, the other end passes through rubber Seal plug afterwards（2）On fixation rod aperture（15）, high pressure resistant conduit（9）One end passes through seal plug before rubber（10）On resistance to height Press guide hole（13）, high pressure resistant conduit（9）The other end pass through rubber after seal plug（2）On high pressure resistant guide hole（13）Afterwards Pass through high pressure resistant conduit control valve（3）With high-pressure liquid CO2Gas bomb（6）Connection, high pressure resistant conduit（9）Remaining part is around solid Fixed pole（11）Carry out ring-wound.
- A kind of 2. CO according to claim 12The method for blocking of plugging device, it is characterised in that comprise the following steps：The first step, plugging device is installed：By seal plug after rubber（2）, seal plug before rubber（10）Put coal inlet（12）In；Second step, water-stop is filled to plugging device：By water supply installation（7）Water pipe be linked into seal plug after rubber（2）On Water injection hole（14）, open water supply installation（7）On valve carry out water filling, after the water in plugging device fills, remove water filling Pipe, with a rubber stopper by water injection hole（14）Block；3rd step, high-pressure liquid CO2Gas bomb supplies：Open high pressure resistant conduit control valve（3）, then turn on gas cylinder control Valve（4）To high pressure resistant conduit（9）Pour into CO2Gas, due to gasification, CO2Gas is in high pressure resistant conduit（9）The mistake of interior circulation Cheng Zhonghui absorbs substantial amounts of heat and produces refrigeration, and the water outside conduit can slowly be frozen in, and finally connect the resistance to of ring-wound High-pressure conduit（9）Freeze together；4th step, stop supply, close high pressure resistant pipe joint：After freezing completely, gas cylinder control valve is closed（4）, Remove high-pressure liquid CO2Gas bomb（6）, and immediately by high pressure resistant conduit control valve（3）Close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595748.4A CN107339079B (en) | 2017-07-20 | 2017-07-20 | A kind of CO2Plugging device and its method for blocking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595748.4A CN107339079B (en) | 2017-07-20 | 2017-07-20 | A kind of CO2Plugging device and its method for blocking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107339079A true CN107339079A (en) | 2017-11-10 |
| CN107339079B CN107339079B (en) | 2019-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710595748.4A Expired - Fee Related CN107339079B (en) | 2017-07-20 | 2017-07-20 | A kind of CO2Plugging device and its method for blocking |
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| CN (1) | CN107339079B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894655A (en) * | 2020-06-24 | 2020-11-06 | 中国矿业大学 | Low-temperature fluid quick-freezing ice blocking method for gas extraction drill hole |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3612192A (en) * | 1969-04-14 | 1971-10-12 | James C Maguire Jr | Cryogenic drilling method |
| SU872775A1 (en) * | 1979-12-07 | 1981-10-15 | За витель | Method of creating ice partition and destroying same |
| SU1002600A1 (en) * | 1981-11-02 | 1983-03-07 | Донецкий Ордена Трудового Красного Знамени Политехнический Институт | Method of avoiding rock and gas outbursts when driving mine working |
| US4396031A (en) * | 1981-01-07 | 1983-08-02 | Conoco Inc. | Method for restricting uncontrolled fluid flow through a pipe |
| CN102562126A (en) * | 2011-12-31 | 2012-07-11 | 枣庄矿业(集团)有限责任公司田陈煤矿 | Hole sealing device for coal seam water infusion long hole |
| CN102733844A (en) * | 2012-04-27 | 2012-10-17 | 徐州中矿安达矿山科技有限公司 | Hole sealing structure and hole sealing method as well as expansive cement for sealing hole |
| CN203374299U (en) * | 2013-07-24 | 2014-01-01 | 张金亭 | Mine-used liquid-inert-gas fire preventing and extinguishing system |
| CN205330609U (en) * | 2016-01-05 | 2016-06-22 | 安徽理工大学 | Novel hole sealing pressure measurement integration device |
| CN205477518U (en) * | 2016-01-11 | 2016-08-17 | 淮北矿业股份有限公司 | Boring press seal hole device in colliery |
-
2017
- 2017-07-20 CN CN201710595748.4A patent/CN107339079B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3612192A (en) * | 1969-04-14 | 1971-10-12 | James C Maguire Jr | Cryogenic drilling method |
| SU872775A1 (en) * | 1979-12-07 | 1981-10-15 | За витель | Method of creating ice partition and destroying same |
| US4396031A (en) * | 1981-01-07 | 1983-08-02 | Conoco Inc. | Method for restricting uncontrolled fluid flow through a pipe |
| SU1002600A1 (en) * | 1981-11-02 | 1983-03-07 | Донецкий Ордена Трудового Красного Знамени Политехнический Институт | Method of avoiding rock and gas outbursts when driving mine working |
| CN102562126A (en) * | 2011-12-31 | 2012-07-11 | 枣庄矿业(集团)有限责任公司田陈煤矿 | Hole sealing device for coal seam water infusion long hole |
| CN102733844A (en) * | 2012-04-27 | 2012-10-17 | 徐州中矿安达矿山科技有限公司 | Hole sealing structure and hole sealing method as well as expansive cement for sealing hole |
| CN203374299U (en) * | 2013-07-24 | 2014-01-01 | 张金亭 | Mine-used liquid-inert-gas fire preventing and extinguishing system |
| CN205330609U (en) * | 2016-01-05 | 2016-06-22 | 安徽理工大学 | Novel hole sealing pressure measurement integration device |
| CN205477518U (en) * | 2016-01-11 | 2016-08-17 | 淮北矿业股份有限公司 | Boring press seal hole device in colliery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894655A (en) * | 2020-06-24 | 2020-11-06 | 中国矿业大学 | Low-temperature fluid quick-freezing ice blocking method for gas extraction drill hole |
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| Publication number | Publication date |
|---|---|
| CN107339079B (en) | 2019-08-02 |
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Granted publication date: 20190802 Termination date: 20200720 |
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| CF01 | Termination of patent right due to non-payment of annual fee |