CN114541999B - Continuous pressure-maintaining hole sealing method - Google Patents
Continuous pressure-maintaining hole sealing method Download PDFInfo
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- CN114541999B CN114541999B CN202111591329.6A CN202111591329A CN114541999B CN 114541999 B CN114541999 B CN 114541999B CN 202111591329 A CN202111591329 A CN 202111591329A CN 114541999 B CN114541999 B CN 114541999B
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- 238000007789 sealing Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 21
- 210000003097 mucus Anatomy 0.000 claims abstract description 93
- 239000002002 slurry Substances 0.000 claims abstract description 29
- 239000003245 coal Substances 0.000 claims abstract description 20
- 238000005553 drilling Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 36
- 230000000903 blocking effect Effects 0.000 claims description 21
- 238000005422 blasting Methods 0.000 claims description 11
- 238000004880 explosion Methods 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 210000004400 mucous membrane Anatomy 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/068—Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells
Landscapes
- 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)
- Pipe Accessories (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention provides a continuous pressure-maintaining hole sealing method, which belongs to the technical field of coal mine hole sealing, and comprises the steps of firstly, respectively filling an inner bag type plug and an outer bag type plug into the inner side and the outer side of a coal seam drilling hole; then, one end of the mucus injecting pipe is communicated with the middle mucus plugging section, and the other end of the mucus injecting pipe is communicated with the mucus injecting pump through a pressure gauge; then, starting a grouting pump to simultaneously inject slurry into the inner bag type plug and the outer bag type plug; then, starting a mucus injection pump to inject mucus into the middle mucus plugging section, so as to finish the first hole sealing of the middle mucus plugging section; then, automatically starting and stopping the mucus injecting pump according to the detection condition of the pressure gauge to finish continuous pressure maintaining of mucus in the middle mucus plugging section; on the basis of two plugging, the invention can timely fill micro cracks and newly generated cracks by utilizing the characteristics of high permeability, mucous plugging property and solidification prevention of mucous and under the condition of continuous pressurization, thereby ensuring the sealing effect of drilling holes, improving the gas extraction concentration and efficiency and ensuring the safe production of coal mines.
Description
Technical Field
The invention relates to the technical field of coal mine hole sealing, in particular to a continuous pressure-maintaining hole sealing method.
Background
The current hole sealing process of two plugs and one injection is as follows: the grouting (belt pressure type) hole packer for the gas drainage of the bag mainly comprises a grouting pipe, a gas drainage pipe, a one-way valve, a blasting valve, a bag, a plug and the like. The grouting pipe of the hole packer is communicated with a grouting pump, grouting liquid stirred in a stirring barrel enters the grouting pipe and a bag through the grouting pump, the bag rapidly expands, the outer diameter of the bag is fastened on the wall of a coal seam hole, and holes at two ends of the hole packer are closed; when the pressure reaches, the explosion valve explodes, and the grouting liquid fills the middle part of the two bags, so that multi-layer sealing is realized, and the gas is pumped and discharged through the gas pumping and discharging pipe connected with the gas pumping and discharging pipeline. Wherein the grouting liquid is solidified and formed for a certain time.
However, the cross section form of the drilling hole is sequentially divided into a breaking area, a plastic area and an elastic curve from the hole wall to the inside of the coal seam, irregular cracks exist in the breaking area and the plastic area, the existing two-block one-injection process grouting liquid cannot well penetrate into the cracks, crack distribution and crack development of the coal (rock) body around the drilling hole change along with time change, but the grouting liquid can be solidified after a period of time, so that the problems of loose blocking, air leakage, extraction short circuit and the like can be caused in the gas extraction process, the gas extraction concentration is low, the expected gas extraction effect cannot be achieved, and the safety production of the coal mine is affected.
Therefore, a new hole sealing method needs to be developed.
Disclosure of Invention
In view of the above, the invention provides a continuous pressure-maintaining hole sealing method, which uses the characteristics of high permeability, mucous blocking property and non-solidification of mucous as a blocking object of a middle mucous blocking section on the basis of two blocks and can timely fill micro cracks and newly generated cracks under the condition of continuous pressurization, thereby ensuring the sealing effect of drilling holes, improving the gas extraction concentration and efficiency and ensuring the safe production of coal mines.
In order to solve the technical problems, the invention provides a continuous pressure-maintaining hole sealing method, which comprises the following steps:
step 1, respectively filling an inner bag type plug and an outer bag type plug into the inner side and the outer side of a coal seam drilling hole, forming a middle mucus plugging section between the inner bag type plug and the outer bag type plug, and respectively communicating an grouting liquid pipe with the inner bag type plug and the outer bag type plug, wherein an grouting liquid pump provides grouting liquid to the inner bag type plug and the outer bag type plug through the grouting liquid pipes;
step 2, one end of a mucus injecting pipe is communicated with the middle mucus plugging section, and the other end of the mucus injecting pipe is communicated with a mucus injecting pump through a pressure gauge so as to inject mucus into the middle mucus plugging section and keep pressure continuously; one end of the gas drainage pipe is communicated with the gas drainage pipeline, and the other end of the gas drainage pipe sequentially passes through the outer bag type plug and the inner bag type plug;
step 3, starting a grouting pump to inject slurry into the inner bag type plug and the outer bag type plug, wherein the inner bag type plug and the outer bag type plug rapidly expand to be attached to a coal seam drilling hole wall, and sealing the outer ends of the grouting pipe after two ends of the middle mucus plugging section are closed;
step 4, starting an injection liquid pump to inject mucus into the middle mucus plugging section, and automatically stopping the injection liquid pump to work when the pressure detected by the pressure gauge reaches the set pressure so as to finish the first hole sealing of the middle mucus plugging section;
step 5, when the pressure detected by the pressure gauge is reduced, the mucus injecting pump is automatically started to supplement mucus to the middle mucus plugging section, and when the pressure detected by the pressure gauge reaches a set pressure, the mucus injecting pump is automatically stopped to work, so that the pressure maintaining of the mucus in the middle mucus plugging section is completed;
and step 6, circularly executing the step 5 to perform continuous pressure-maintaining hole sealing operation on the middle mucus plugging section in the coal seam drilling.
Further, in step 1, the inside bag type closure employs an inside bag unit; or the inner bag type plugging adopts a plurality of inner bag units, an inner grouting section is reserved between the adjacent inner bag units, and an inner blasting valve is connected to a grouting pipe positioned in the inner grouting section.
Further, in step 1, an inner check valve is installed on the grouting pipe located in the inner bag unit.
Further, in step 1, the outside pouch type closure employs an outside pouch unit; or the outside bag type plugging adopts a plurality of outside bag units, a grouting section is reserved between the adjacent outside bag units, and an outside explosion valve is connected to a grouting pipe positioned in the grouting section.
Further, in step 1, an outside check valve is installed on the grouting pipe located in the outside bladder unit.
Further, in step 1, the set pressures in step 4 and step 5 are the same and are each 1 to 5MPa.
Further, in step 1, the inner bag-type plug and the outer bag-type plug share one grouting liquid pipe for grouting liquid filling, or the inner bag-type plug and the outer bag-type plug adopt one grouting liquid pipe for grouting liquid filling respectively.
Further, in step 3, when the grouting pump injects slurry into the inner bag-type plugging section, the slurry is injected into all the inner bag units first, and when the pressure of the inner bag units reaches a set pressure, the inner burst valve is ruptured, the slurry fills the inner grouting section, and the inner end of the middle mucus plugging section is closed.
Further, in step 3, when the grouting pump injects slurry into the outside bladder type plugging, the slurry is injected into all outside bladder type units first, and when the pressure in the outside bladder type units reaches the set pressure, the outside burst valve breaks, the slurry fills the outside grouting section, and the outer end of the middle mucus plugging section is closed.
The technical scheme of the invention has the following beneficial effects:
1. on the basis of two plugging, the invention can timely fill micro cracks and newly generated cracks by utilizing the characteristics of high permeability, mucous plugging property and solidification prevention of mucous and under the condition of continuous pressurization, thereby ensuring the sealing effect of drilling holes, improving the gas extraction concentration and efficiency and ensuring the safe production of coal mines.
2. The invention cancels the blasting valve in the traditional two-plug one-injection process, and utilizes the mucus injection pipe to inject high-permeability, mucus plugging and non-solidifying mucus into the middle mucus plugging section formed between the inner bag type plugging and the outer bag type plugging, thereby ensuring that the mucus fills tiny cracks and newly generated cracks in time so as to improve the sealing effect of drilling holes.
3. The mucous membrane sealing device has the characteristic of not solidifying, the pressure of mucous in the middle mucous sealing section can be monitored in real time by arranging the pressure gauge on the mucous membrane sealing pipe, when the pressure detected by the pressure gauge drops, the mucous membrane sealing pump is automatically started to supplement mucous to the middle mucous sealing section, and when the pressure detected by the pressure gauge reaches the set pressure, the mucous membrane sealing pump is automatically stopped, so that the middle mucous sealing section is always in a state of being filled with mucous, and a certain pressure is maintained, so that the sealing effect of the middle mucous sealing section is better.
4. In the invention, the inner bag type blocking is not limited to an inner bag unit, a plurality of inner bag units can be adopted, an inner grouting section is reserved between adjacent inner bag units, and an inner blasting valve is connected to a grouting pipe positioned in the inner grouting section; when the grouting pump injects slurry into the inner bag type plugging section, the slurry is injected into all inner bag units, and when the pressure of the inner bag units reaches a set pressure, the inner explosion valve is broken, the slurry fills the inner grouting section, and the inner end of the middle mucus plugging section is sealed.
5. In the invention, the outer bag type blocking is not limited to adopting one outer bag unit, a plurality of outer bag units can be adopted, grouting sections are reserved between adjacent outer bag units, and an outer blasting valve is connected to a grouting pipe positioned in the grouting section; when the grouting pump injects slurry into the outer bag type plugging section, the slurry is firstly injected into all outer bag type units, and when the pressure in the outer bag type units reaches the set pressure, the outer explosion valve is broken, the slurry fills the outer grouting section, and the outer end of the middle mucus plugging section is closed.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
Specifically, the continuous pressure-maintaining hole sealing method comprises the following steps:
step 1, respectively filling an inner bag type plug and an outer bag type plug into the inner side and the outer side of a coal seam drilling hole, forming a middle mucus plugging section between the inner bag type plug and the outer bag type plug, and respectively communicating an grouting liquid pipe with the inner bag type plug and the outer bag type plug, wherein an grouting liquid pump provides grouting liquid to the inner bag type plug and the outer bag type plug through the grouting liquid pipes;
step 2, one end of a mucus injecting pipe is communicated with the middle mucus plugging section, and the other end of the mucus injecting pipe is communicated with a mucus injecting pump through a pressure gauge so as to inject mucus into the middle mucus plugging section and keep pressure continuously; one end of the gas drainage pipe is communicated with the gas drainage pipeline, and the other end of the gas drainage pipe sequentially passes through the outer bag type plug and the inner bag type plug;
step 3, starting a grouting pump to inject slurry into the inner bag type plug and the outer bag type plug, wherein the inner bag type plug and the outer bag type plug rapidly expand to be attached to a coal seam drilling hole wall, and sealing the outer ends of the grouting pipe after two ends of the middle mucus plugging section are closed;
step 4, starting an injection liquid pump to inject mucus into the middle mucus plugging section, and automatically stopping the injection liquid pump to work when the pressure detected by the pressure gauge reaches the set pressure so as to finish the first hole sealing of the middle mucus plugging section;
step 5, when the pressure detected by the pressure gauge is reduced, the mucus injecting pump is automatically started to supplement mucus to the middle mucus plugging section, and when the pressure detected by the pressure gauge reaches a set pressure, the mucus injecting pump is automatically stopped to work, so that the pressure maintaining of the mucus in the middle mucus plugging section is completed;
and step 6, circularly executing the step 5 to perform continuous pressure-maintaining hole sealing operation on the middle mucus plugging section in the coal seam drilling.
According to one embodiment of the invention, in step 1, the inside pouch type closure employs an inside pouch unit.
According to one embodiment of the present invention, in step 1, an inside check valve is installed on the grouting pipe located in the inside pouch unit.
According to one embodiment of the invention, in step 1, the outside pouch occlusion employs an outside pouch unit.
According to one embodiment of the present invention, in step 1, an outside check valve is installed on the grouting pipe located in the outside bladder unit.
According to an embodiment of the present invention, in step 1, the set pressures in step 4 and step 5 are the same and are each 1MPa, but of course not limited to 1MPa, but may be 2MPa, 3MPa, 4MPa, 5MPa, etc.
According to an embodiment of the present invention, in step 1, the inner bag-type plug and the outer bag-type plug share one grouting pipe for grouting and filling, and it is obvious that the inner bag-type plug and the outer bag-type plug may not share one grouting pipe for grouting and filling, and the inner bag-type plug and the outer bag-type plug may also respectively adopt one grouting pipe for grouting and filling.
According to one embodiment of the present invention, in step 3, the inner bag type plugging adopts 2 inner bag units, an inner grouting section is left between adjacent inner bag units, and an inner blasting valve is connected to a grouting pipe located in the inner grouting section; when the grouting pump injects slurry into the inner bag type plugging section, the slurry is injected into all inner bag units, and when the pressure of the inner bag units reaches a set pressure, the inner explosion valve is broken, the slurry fills the inner grouting section, and the inner end of the middle mucus plugging section is sealed. It is clear that the inner bag closure is not limited to the use of 2 inner bag units, but may be more, such as 3, 4, 5 etc.
According to one embodiment of the invention, in step 3, the outer bag type plugging adopts 2 outer bag units, a grouting section is reserved between adjacent outer bag units, and an outer blasting valve is connected to a grouting pipe positioned in the grouting section; when the grouting pump injects slurry into the outer bag type plugging section, the slurry is firstly injected into all outer bag type units, and when the pressure in the outer bag type units reaches the set pressure, the outer explosion valve is broken, the slurry fills the outer grouting section, and the outer end of the middle mucus plugging section is closed. It will be apparent that the lateral pouch occlusion is not limited to the use of 2 lateral pouch units, but may be more, such as 3, 4, 5, etc.
The working method (or working principle) of the invention is as follows:
the invention adopts the two plugs in the traditional two plugs and one injection, forms a middle mucus plugging section between the two plugs, cancels the method of injecting slurry into the middle mucus plugging section by adopting a blasting valve, and optimizes the method of injecting the mucus into the middle mucus plugging section by adding the filling mucus pipe. The grouting liquid pipe is communicated with the grouting pump, the grouting liquid stirred in the stirring barrel enters the grouting liquid pipe, the inner bag type plugging and the outer bag type plugging through the grouting pump, the bags expand rapidly, the outer diameter of the bags is fastened on the wall of the coal seam hole, and the holes at the two ends of the rotating hole are closed; stopping grouting and plugging the grouting pipe when the pressure is reached; connecting a mucus injecting pipe with a mucus injecting pipeline, a pressure gauge and a mucus injecting pump; and injecting the prepared and stirred mucus into the middle section of the two bags through a pipeline system connected with the mucus injection pump to enable the mucus to fully permeate into the cracks, filling the middle section, achieving a certain pressure, and automatically stopping the mucus injection pump. And (5) plugging the drilled holes. When a new crack is formed, mucus permeates the new crack, the pressure of the middle section can be reduced, and the grouting pump automatically starts grouting until the pressure reaches again, and the whole system stops working.
In addition, at present, although there is multi-bag type blocking, common cement mortar grouting liquid is injected into the bag and between the adjacent bags, and as the common grouting liquid is solidified after a period of time, the newly generated gaps cannot be blocked, and the blocking effect is poor. Specifically, the inner bag type plugging can adopt a plurality of inner bag units, an inner grouting section is reserved between the adjacent inner bag units, and an inner blasting valve is connected to a grouting pipe positioned in the inner grouting section; meanwhile, the outer bag type sealing adopts a plurality of outer bag units, grouting sections are reserved between the adjacent outer bag units, and an outer blasting valve is connected to a grouting pipe positioned in the grouting section; after the structure of the inner bag type blocking and the outer bag type blocking is adopted, common cement mortar grouting liquid can be injected into the inner bag type blocking unit and the outer bag type blocking unit before the middle mucus blocking section is filled with mucus, when the pressures in the inner bag type blocking unit and the outer bag type blocking unit respectively reach the inner burst valve between the two adjacent inner bag type blocking units and the pressure value of the outer burst valve between the two adjacent outer bag type blocking units, the grouting liquid can enter the inner grouting section between the two adjacent inner bag type blocking units and the outer grouting section between the two adjacent outer bag type blocking units, until the inner grouting section and the outer grouting section are filled up and maintained.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (7)
1. The continuous pressure-maintaining hole sealing method is characterized by comprising the following steps of:
step 1, respectively filling an inner bag type plug and an outer bag type plug into the inner side and the outer side of a coal seam drilling hole, forming a middle mucus plugging section between the inner bag type plug and the outer bag type plug, and respectively communicating an grouting liquid pipe with the inner bag type plug and the outer bag type plug, wherein an grouting liquid pump provides grouting liquid to the inner bag type plug and the outer bag type plug through the grouting liquid pipes;
step 2, one end of a mucus injecting pipe is communicated with the middle mucus plugging section, and the other end of the mucus injecting pipe is communicated with a mucus injecting pump through a pressure gauge so as to inject mucus into the middle mucus plugging section and keep pressure continuously; one end of the gas drainage pipe is communicated with the gas drainage pipeline, and the other end of the gas drainage pipe sequentially passes through the outer bag type plug and the inner bag type plug;
step 3, starting a grouting pump to inject slurry into the inner bag type plug and the outer bag type plug, wherein the inner bag type plug and the outer bag type plug rapidly expand to be attached to a coal seam drilling hole wall, and sealing the outer ends of the grouting pipe after two ends of the middle mucus plugging section are closed;
step 4, starting an injection liquid pump to inject mucus into the middle mucus plugging section, and automatically stopping the injection liquid pump to work when the pressure detected by the pressure gauge reaches the set pressure so as to finish the first hole sealing of the middle mucus plugging section;
step 5, when the pressure detected by the pressure gauge is reduced, the mucus injecting pump is automatically started to supplement mucus to the middle mucus plugging section, and when the pressure detected by the pressure gauge reaches a set pressure, the mucus injecting pump is automatically stopped to work, so that the pressure maintaining of the mucus in the middle mucus plugging section is completed;
step 6, circularly executing the step 5 to perform continuous pressure-maintaining hole sealing operation on the middle mucus plugging section in the coal seam drilling;
in the step 1, an inner bag unit is adopted for the inner bag type blocking; or the inner bag type plugging adopts a plurality of inner bag units, an inner grouting section is reserved between the adjacent inner bag units, and an inner blasting valve is connected to a grouting pipe positioned in the inner grouting section; in the step 1, an outside bag unit is adopted for outside bag type blocking; or the outside bag type plugging adopts a plurality of outside bag units, a grouting section is reserved between the adjacent outside bag units, and an outside explosion valve is connected to a grouting pipe positioned in the grouting section.
2. The continuous pressure-maintaining hole sealing method as claimed in claim 1, wherein in step 1, an inner check valve is installed on the grouting pipe located in the inner bag unit.
3. The continuous pressure-maintaining hole sealing method as claimed in claim 1, wherein in step 1, an outer check valve is installed on the grouting pipe located in the outer bag unit.
4. The continuous pressure-maintaining hole sealing method according to claim 1, wherein the set pressure in the step 4 and the set pressure in the step 5 are the same and are both 1-5MPa.
5. The continuous pressure-maintaining hole sealing method according to claim 1, wherein in step 1, the inner bag-type plug and the outer bag-type plug share one grouting pipe for grouting liquid filling, or the inner bag-type plug and the outer bag-type plug adopt one grouting pipe for grouting liquid filling respectively.
6. The continuous pressure-maintaining hole sealing method according to claim 1, wherein in step 3, when the grouting pump injects slurry into the inner bag-type plugging section, the slurry is injected into all the inner bag units first, and when the pressure of the inner bag units reaches a set pressure, the inner burst valve is ruptured, the slurry fills the inner grouting section, and the inner end of the middle mucus plugging section is closed.
7. The continuous pressure-maintaining hole sealing method according to claim 1, wherein in the step 3, when the grouting pump injects the slurry into the outside bladder type plugging, the slurry is injected into all outside bladder type cells first, and when the pressure in the outside bladder type cells reaches the set pressure, the outside burst valve breaks, the slurry fills the outside grouting section, and the outer end of the middle mucus plugging section is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111591329.6A CN114541999B (en) | 2021-12-23 | 2021-12-23 | Continuous pressure-maintaining hole sealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111591329.6A CN114541999B (en) | 2021-12-23 | 2021-12-23 | Continuous pressure-maintaining hole sealing method |
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| CN114541999A CN114541999A (en) | 2022-05-27 |
| CN114541999B true CN114541999B (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111591329.6A Active CN114541999B (en) | 2021-12-23 | 2021-12-23 | Continuous pressure-maintaining hole sealing method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003173A (en) * | 2010-10-29 | 2011-04-06 | 北京中矿天安科技发展有限公司 | System and method for automatically measuring and recording gas pressure during coal seam hole sealing |
| CN103352675A (en) * | 2013-07-01 | 2013-10-16 | 陕西煤业化工技术研究院有限责任公司 | Gas extraction, drilling and sealing device and method |
| CN107313799A (en) * | 2017-08-16 | 2017-11-03 | 阳泉科汇瓦斯检测技术有限公司 | A kind of sealing and leakage plugging device and method for gas pumping |
| CN108119094A (en) * | 2018-02-25 | 2018-06-05 | 中国平煤神马能源化工集团有限责任公司 | Deep fractures mash gas pumping drilling two blocks up one row's hole sealing device of a note and application method |
| CN109339736A (en) * | 2018-12-19 | 2019-02-15 | 河南理工大学 | A kind of mash gas pumping drilling solid-liquid two-phase hole sealing device and technique |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6554368B2 (en) * | 2000-03-13 | 2003-04-29 | Oil Sands Underground Mining, Inc. | Method and system for mining hydrocarbon-containing materials |
-
2021
- 2021-12-23 CN CN202111591329.6A patent/CN114541999B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003173A (en) * | 2010-10-29 | 2011-04-06 | 北京中矿天安科技发展有限公司 | System and method for automatically measuring and recording gas pressure during coal seam hole sealing |
| CN103352675A (en) * | 2013-07-01 | 2013-10-16 | 陕西煤业化工技术研究院有限责任公司 | Gas extraction, drilling and sealing device and method |
| CN107313799A (en) * | 2017-08-16 | 2017-11-03 | 阳泉科汇瓦斯检测技术有限公司 | A kind of sealing and leakage plugging device and method for gas pumping |
| CN108119094A (en) * | 2018-02-25 | 2018-06-05 | 中国平煤神马能源化工集团有限责任公司 | Deep fractures mash gas pumping drilling two blocks up one row's hole sealing device of a note and application method |
| CN109339736A (en) * | 2018-12-19 | 2019-02-15 | 河南理工大学 | A kind of mash gas pumping drilling solid-liquid two-phase hole sealing device and technique |
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| Publication number | Publication date |
|---|---|
| CN114541999A (en) | 2022-05-27 |
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