CN114542005A - Hard thick top coal hydraulic fracturing is with pressing-penetrating integration packer device - Google Patents
Hard thick top coal hydraulic fracturing is with pressing-penetrating integration packer device Download PDFInfo
- Publication number
- CN114542005A CN114542005A CN202210148531.XA CN202210148531A CN114542005A CN 114542005 A CN114542005 A CN 114542005A CN 202210148531 A CN202210148531 A CN 202210148531A CN 114542005 A CN114542005 A CN 114542005A
- Authority
- CN
- China
- Prior art keywords
- packer
- connecting pipe
- pipe
- lower packer
- fracturing
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 55
- 230000010354 integration Effects 0.000 title claims description 3
- 238000007789 sealing Methods 0.000 claims abstract description 53
- 239000002775 capsule Substances 0.000 claims abstract description 48
- 238000002347 injection Methods 0.000 claims abstract description 39
- 239000007924 injection Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 210000001503 joint Anatomy 0.000 claims abstract description 8
- 241000237942 Conidae Species 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000005065 mining Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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
- E21B33/122—Multiple string packers
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A pressing-jetting integrated packer device for hard thick-top coal hydraulic fracturing comprises an upper packer, a lower packer and a restrictor, wherein the upper packer comprises an upper packer connecting pipe and an upper packer sealing capsule, and an upper packer water injection hole which is sheathed by the upper packer sealing capsule is arranged on the pipe wall of the upper packer connecting pipe in a penetrating manner; the lower packer comprises a packer connecting pipe and a lower packer sealing capsule; the one end and the last packer connecting pipe butt joint intercommunication of flow controller, the other end and the lower packer connecting pipe butt joint intercommunication of flow controller, the one end mouth of pipe of keeping away from the flow controller on the last packer connecting pipe is connected with the check valve, the one end mouth of pipe of keeping away from the flow controller on the lower packer connecting pipe is connected with lower packer low head, sets up the jet orifice that runs through to in the lower packer connecting pipe on the lateral wall of lower packer low head. The invention has reasonable and compact structure and convenient use, reduces the working procedures of underground operation, and improves the coal caving operation efficiency, namely reduces the workload of workers.
Description
Technical Field
The invention relates to the field of coal seam mining equipment, in particular to a pressing-ejecting integrated packer device for hard and thick top coal hydraulic fracturing.
Background
In the production process of a coal mine, as the mining depth is gradually increased and the ground stress is obviously increased, the top coal at the upper part of the mining coal bed is more compact and hard compared with a shallow coal bed, thereby causing the problems that the top coal is difficult to collapse and falls into a coal discharge port depending on the mine pressure. At present, the process technology of hydraulic fracturing is mainly adopted to crush the top coal and then collapse into a coal discharge port under the action of mine pressure so as to improve the recovery rate of coal and increase the yield of coal mines.
Aiming at the hard and thick top coal, only a few cracks are generated inside, the requirement that the hard and thick top coal collapses into a coal discharge port cannot be met, the main characteristic is that the top coal is hard and cannot be broken even if layering is carried out. The existing method for solving the problem mainly relies on secondary jet flow fracturing, and hard and thick top coal after layering is cut in a water jet flow mode. However, the secondary fracturing not only needs a large amount of material resources and manpower, but also wastes a large amount of time. Therefore, the existing hydraulic fracturing device needs to be optimized and improved, so that the primary fracturing can be realized at the same time, and the secondary fracturing effect can be realized.
Disclosure of Invention
Based on the packer, the invention provides a pressing-jetting integrated packer device for the hydraulic fracturing of the hard and thick top coal, which can effectively fracture the hard and thick top coal through the synchronous action of the fracturing medium fracturing and the fracturing medium jet flow so as to meet the requirement that the fractured hard and thick top coal falls into a coal discharge port.
In order to achieve the purpose, the invention provides a pressing-jetting integrated packer device for hard thick-top coal hydraulic fracturing, which comprises an upper packer, a lower packer and a restrictor, wherein:
the upper packer comprises a hollow cylindrical upper packer connecting pipe and an upper packer sealing capsule sleeved on the peripheral pipe wall of the upper packer connecting pipe, an upper packer water injection hole which is sleeved by the upper packer sealing capsule penetrates through the pipe wall of the upper packer connecting pipe, and the upper packer water injection hole is used for injecting a fracturing medium in the upper packer connecting pipe into the upper packer sealing capsule so as to enable the upper packer sealing capsule to expand;
the lower packer comprises a hollow cylindrical lower packer connecting pipe and a lower packer sealing capsule sleeved on the peripheral pipe wall of the lower packer connecting pipe, a lower packer water injection hole which is wrapped by the lower packer sealing capsule penetrates through the pipe wall of the lower packer connecting pipe, and the lower packer water injection hole is used for injecting a fracturing medium in the lower packer connecting pipe into the lower packer sealing capsule so as to enable the lower packer sealing capsule to expand;
the one end of flow controller with go up the packer connecting pipe butt joint intercommunication, the other end of flow controller with packer connecting pipe butt joint intercommunication down, keep away from on the last packer connecting pipe the one end mouth of pipe of flow controller is connected with the check valve, keep away from on the lower packer connecting pipe the one end mouth of pipe of flow controller is connected with lower packer low head, set up on the lateral wall of lower packer low head and run through to the jet hole in the lower packer connecting pipe, the packer low head is used for being connected with outside fracturing medium injection pipeline down.
As a further preferable technical scheme, the check valve comprises a circular truncated cone shell and a plugging ball, the circular truncated cone shell is provided with an opening communicated with the upper packer connecting pipe, the plugging ball is arranged in the circular truncated cone shell, and when a fracturing medium in the upper packer connecting pipe generates pressure, the plugging ball plugs the opening on the circular truncated cone shell under the pushing of the pressure.
As a further preferable technical scheme of the invention, an upper packer upper sealing head is sleeved and connected with one end pipe orifice of the upper packer connecting pipe, which is far away from the throttling device, and the upper packer connecting pipe is fixedly connected with the one-way valve through the upper packer upper sealing head.
As a further preferable technical scheme of the invention, an upper packer lower end socket is connected to a pipe orifice sleeve used for connecting the throttling device on the upper packer connecting pipe, and the upper packer connecting pipe is fixedly connected with the throttling device through the upper packer lower end socket.
As a further preferable technical scheme of the invention, an upper packer sliding sleeve is movably sleeved on a pipe body of the upper packer connecting pipe, one end of a sealing capsule of the upper packer is fixedly connected with the upper packer sliding sleeve, and the other end of the sealing capsule of the upper packer is fixedly connected with a lower end socket of the upper packer.
As a further preferable technical scheme of the invention, a lower packer upper head is connected to a pipe orifice sleeve used for connecting the flow controller on the lower packer connecting pipe, and the lower packer connecting pipe is fixedly connected with the flow controller through the lower packer upper head.
As a further preferable technical scheme, a lower packer sliding sleeve is movably sleeved on a pipe body of the lower packer connecting pipe, one end of a lower packer sealing capsule is fixedly connected with the lower packer sliding sleeve, and the other end of the lower packer sealing capsule is fixedly connected with an upper end socket of the lower packer.
As a further preferable technical scheme of the invention, the lower end socket of the lower packer is in a circular truncated cone shape with a wide upper part and a narrow lower part, a central hole of the lower end socket of the lower packer is used for communicating a fracturing medium injection pipeline with a lower packer connecting pipe, the jet hole is formed in the circular truncated cone side wall of the lower end socket of the lower packer, and an included angle between the axial direction of the jet hole and the axial direction of the lower packer connecting pipe is 15-60 degrees.
As a further preferable technical scheme, the number of the jet holes is multiple, and the jet holes are arranged at intervals around the periphery of the lower end socket of the lower packer.
As a further preferable technical solution of the present invention, the fracturing medium is water.
The invention relates to a pressure-injection integrated packer device for hard thick-top coal hydraulic fracturing, which can achieve the following beneficial effects by adopting the technical scheme:
1) by using the pressure-injection integrated packer device for the hard and thick top coal hydraulic fracturing, the hard and thick top coal can be effectively and accurately fractured, and the size of the fractured hard and thick top coal can be ensured to be in accordance with the maximum size of a coal caving port, so that the material resources and manpower for the hard and thick top coal hydraulic fracturing of a mine are greatly reduced, namely the difficult problem of hard and thick top coal caving is solved;
2) the hard and thick top coal can be effectively fractured through the synchronous action of fracturing medium fracturing and fracturing medium jet flow, so that the requirement that the fractured hard and thick top coal falls into a coal discharge port is met;
3) the invention has reasonable and compact structure and convenient use, reduces the working procedures of underground operation, and improves the coal caving operation efficiency, namely reduces the workload of workers.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural view of an example provided by a press-and-fire integrated packer device for hydraulic fracturing of hard and thick-topped coals according to the present invention;
FIG. 2 is a schematic front view of a lower packer lower head;
FIG. 3 is a schematic bottom view of the lower packer lower head.
In the figure: 1. the packer comprises a check valve, 2, a plugging ball, 3, an upper packer connecting pipe, 4, an upper packer upper end cover, 5, an upper packer lower end cover, 6, an upper packer sliding sleeve, 7, an upper packer sealing capsule, 8, an upper packer water injection hole, 9, a flow controller, 10, a lower packer connecting pipe, 11, a lower packer upper end cover, 12, a lower packer lower end cover, 13, a lower packer sliding sleeve, 14, a lower packer sealing capsule, 15, a lower packer water injection hole, 16 and a jet hole.
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments. In the preferred embodiments, the terms "upper", "lower", "left", "right", "middle" and "a" are used for clarity of description only, and are not used to limit the scope of the invention, and the relative relationship between the terms and the terms is not changed or modified substantially without changing the technical content of the invention.
As shown in figure 1, the invention provides a pressing-jetting integrated packer device for hard thick-top coal hydraulic fracturing, which comprises a one-way valve 1, an upper packer, a lower packer and a restrictor 9, wherein the upper packer, the restrictor 9 and the lower packer are sequentially connected and communicated, a communicated injection cavity is used for injecting a fracturing medium, the one-way valve 1 is used for automatically sealing the injection cavity under the pressure action of the fracturing medium, and the used fracturing medium is water.
The upper packer comprises a hollow cylindrical upper packer connecting pipe 3 and an upper packer sealing capsule 7 sleeved on the peripheral pipe wall of the upper packer connecting pipe 3, an upper packer water injection hole 8 which is sleeved by the upper packer sealing capsule 7 penetrates through the pipe wall of the upper packer connecting pipe 3, and the upper packer water injection hole 8 is used for injecting a fracturing medium in the upper packer connecting pipe 3 into the upper packer sealing capsule 7 so as to enable the upper packer sealing capsule 7 to expand;
the lower packer comprises a hollow cylindrical lower packer connecting pipe 10 and a lower packer sealing capsule 14 sleeved on the outer peripheral pipe wall of the lower packer connecting pipe 10, a lower packer water injection hole 15 which is sleeved by the lower packer sealing capsule 14 penetrates through the pipe wall of the lower packer connecting pipe 10, and the lower packer water injection hole 15 is used for injecting a fracturing medium in the lower packer connecting pipe 10 into the lower packer sealing capsule 14 so as to enable the lower packer sealing capsule 14 to expand;
the one end of flow controller 9 with go up 3 butt joint intercommunications of packer connecting pipe, the other end of flow controller 9 with packer connecting pipe 10 butt joint intercommunications down, keep away from on going up packer connecting pipe 3 the one end mouth of pipe of flow controller 9 is connected with check valve 1, keep away from on the packer connecting pipe 10 down the one end mouth of pipe of flow controller 9 is connected with lower packer low head 12, set up on the lateral wall of lower packer low head 12 and run through to jet orifice 16 in the packer connecting pipe 10 down, the quantity of jet orifice 16 is a plurality of, and is a plurality of jet orifice 16 winds the periphery interval setting of lower packer low head 12, lower packer low head 12 is used for being connected with outside fracturing medium injection pipeline.
The working principle is as follows: in the using process of the pressure-injection integrated packer device, a fracturing medium injection pipeline needs to be connected and then pushed to the fracturing position of a drill hole in a coal seam, and the fracturing medium injection pipeline is connected with a pressure pump. An integrally communicated injection cavity is formed by an upper packer connecting pipe 3, a throttling device 9 and a lower packer connecting pipe 10, after an external fracturing medium injection pipeline injects a fracturing medium with pressure into the injection cavity through a lower packer sealing head 12, firstly, a one-way valve 1 seals the upper packer connecting pipe 3 under the pressure action of the fracturing medium so as to enable the injection cavity to form a sealed cavity channel, the pressure in the injection cavity is further increased along with the continuous injection of the fracturing medium, the fracturing medium can be respectively injected into an upper packer sealing capsule 7 and a lower packer throttling device sealing hole wall capsule 14 through an upper packer water injection hole 8 and a lower packer water injection hole 15 and enables the upper packer sealing capsule 7 and the lower packer sealing capsule 14 to be expanded, at the moment, the upper packer sealing capsule 7 and the lower packer sealing capsule 14 and a drill hole between the upper packer sealing capsule and the lower packer sealing capsule 14 form a pressure-distinguishing space, and the pressure-distinguishing space 9 is positioned for discharging the fracturing fluid from the injection cavity to fracture the surrounding coal body, therefore, the large-scale separate layer fracturing of the hard and thick top coal is realized, the fracturing medium jets the separate layer fractured hard and thick top coal out of the small-scale fracture through the jet hole 16 on the side surface of the lower end socket 12 of the lower packer under the condition of high pressure due to continuous high-pressure water injection, the hard and thick top coal can further collapse and fall into a coal discharge port under the action of mine pressure, and the operation efficiency is improved. It should be noted here that the tubular body of the restrictor 9 is uniformly provided with openings, the high-pressure fracturing medium in the injection cavity is ejected from the openings to realize coal bed fracturing, and meanwhile, the restrictor 9 can control the flow speed and flow rate of the ejected fracturing medium.
In specific implementation, the check valve 1 comprises a circular truncated cone shell and a plugging ball 2, the circular truncated cone shell is provided with an opening communicated with the upper packer connecting pipe 3, the plugging ball 2 is arranged in the circular truncated cone shell, when a fracturing medium in the upper packer connecting pipe 3 generates pressure, and the plugging ball 2 plugs the opening in the circular truncated cone shell under the pushing of the pressure.
In specific implementation, an end pipe opening sleeve of the upper packer connecting pipe 3, which is far away from the throttling device 9, is connected with an upper packer sealing head 4, and the upper packer connecting pipe 3 is fixedly connected with the one-way valve 1 through the upper packer sealing head 4. The upper packer connecting pipe 3 is connected with the orifice sleeve of the throttling device 9 and is connected with an upper packer lower end socket 5, and the upper packer connecting pipe 3 is fixedly connected with the throttling device 9 through the upper packer lower end socket 5.
Go up the body of packer connecting pipe 3 and go up the movable sleeve and be equipped with packer sliding sleeve 6, go up the one end of packer sealing capsule 7 with go up packer sliding sleeve 6 fixed connection, the other end with go up 5 fixed connection of packer low head, go up packer low head 5 and packer low head 12 can play the effect of the sealed capsule 7 position of restriction.
In specific implementation, a lower packer upper seal head 11 is connected to a pipe orifice sleeve used for connecting the throttling device 9 on the lower packer connecting pipe 10, and the lower packer connecting pipe 10 is fixedly connected with the throttling device 9 through the lower packer upper seal head 11.
The movable sleeve is equipped with lower packer sliding sleeve 13 on the body of lower packer connecting pipe 10, the one end of packer sealing capsule 14 down with packer sliding sleeve 13 fixed connection down, the other end with packer upper cover 11 fixed connection down.
Preferably, the lower packer lower head 12 is a round table shape with a wide upper part and a narrow lower part, the central hole of the lower packer lower head 12 is used for a fracturing medium injection pipeline to be communicated with the lower packer connecting pipe 10, the jet hole 16 is arranged on the round table side wall of the lower packer lower head 12, the axial included angle between the axial direction of the jet hole 16 and the axial direction of the lower packer connecting pipe 10 is 15-60 degrees, the number of the jet holes 16 on the lower packer lower head 12 is four and the jet holes are arranged at equal intervals, and the reference of the figure 2 and the figure 3 shows.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many variations or modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.
Claims (10)
1. The utility model provides a hard thick top coal hydraulic fracturing is with pressing-penetrating integration packer device which characterized in that, includes packer, lower packer and choke ware, wherein:
the upper packer comprises a hollow cylindrical upper packer connecting pipe and an upper packer sealing capsule sleeved on the peripheral pipe wall of the upper packer connecting pipe, an upper packer water injection hole which is sleeved by the upper packer sealing capsule penetrates through the pipe wall of the upper packer connecting pipe, and the upper packer water injection hole is used for injecting a fracturing medium in the upper packer connecting pipe into the upper packer sealing capsule so as to enable the upper packer sealing capsule to expand;
the lower packer comprises a hollow cylindrical lower packer connecting pipe and a lower packer sealing capsule sleeved on the peripheral pipe wall of the lower packer connecting pipe, a lower packer water injection hole which is wrapped by the lower packer sealing capsule penetrates through the pipe wall of the lower packer connecting pipe, and the lower packer water injection hole is used for injecting a fracturing medium in the lower packer connecting pipe into the lower packer sealing capsule so as to enable the lower packer sealing capsule to expand;
the one end of flow controller with go up the packer connecting pipe butt joint intercommunication, the other end of flow controller with packer connecting pipe butt joint intercommunication down, keep away from on the last packer connecting pipe the one end mouth of pipe of flow controller is connected with the check valve, keep away from on the lower packer connecting pipe the one end mouth of pipe of flow controller is connected with lower packer low head, set up on the lateral wall of lower packer low head and run through to the jet hole in the lower packer connecting pipe, the packer low head is used for being connected with outside fracturing medium injection pipeline down.
2. The integrated pressing and injecting packer device for the hydraulic fracturing of the hard and thick top coal as claimed in claim 1, wherein the check valve comprises a circular truncated cone shell and a blocking ball, the circular truncated cone shell is provided with an opening communicated with the upper packer connecting pipe, the blocking ball is arranged in the circular truncated cone shell, and when a fracturing medium in the upper packer connecting pipe generates pressure, the blocking ball blocks the opening on the circular truncated cone shell under the pushing of the pressure.
3. The integrated fracturing-shooting packer device for the hydraulic fracturing of the hard and thick top coal as claimed in claim 2, wherein an upper packer upper head is sleeved on a pipe port of the upper packer connecting pipe, which is far away from the flow controller, and the upper packer connecting pipe is fixedly connected with the one-way valve through the upper packer upper head.
4. The integrated fracturing-shooting packer device for hard and thick top coal hydraulic fracturing as claimed in claim 3, wherein an upper packer lower head is connected to the pipe orifice sleeve for connecting the flow controller on the upper packer connecting pipe, and the upper packer connecting pipe is fixedly connected with the flow controller through the upper packer lower head.
5. The integrated pressure-jet packer device for the hydraulic fracturing of the hard and thick top coal as claimed in claim 4, wherein an upper packer sliding sleeve is movably sleeved on the pipe body of the upper packer connecting pipe, one end of the upper packer sealing capsule is fixedly connected with the upper packer sliding sleeve, and the other end of the upper packer sealing capsule is fixedly connected with the lower end socket of the upper packer.
6. The integrated hard and thick-top coal hydraulic fracturing and jetting packer device as claimed in claim 1, wherein the lower packer connecting pipe is connected with a lower packer upper head through a pipe orifice sleeve for connecting the flow controller, and the lower packer connecting pipe is fixedly connected with the flow controller through the lower packer upper head.
7. The integrated pressure-jet packer device for the hydraulic fracturing of the hard and thick top coal as claimed in claim 6, wherein a lower packer sliding sleeve is movably sleeved on the pipe body of the lower packer connecting pipe, one end of the lower packer sealing capsule is fixedly connected with the lower packer sliding sleeve, and the other end of the lower packer sealing capsule is fixedly connected with the upper end socket of the lower packer.
8. The integrated pressing-jetting packer device for hard and thick top coal hydraulic fracturing, as claimed in claim 1, wherein the lower packer lower head is in the shape of a truncated cone with a wide top and a narrow bottom, the central hole of the lower packer lower head is used for communicating the fracturing medium injection pipeline with the lower packer connecting pipe, the jet hole is formed in the side wall of the truncated cone of the lower packer lower head, and the included angle between the axial direction of the jet hole and the axial direction of the lower packer connecting pipe is 15-60 degrees.
9. The integrated hard and thick-topped coal hydraulic fracturing and jetting packer as claimed in claim 1, wherein the number of the jet holes is plural, and the plural jet holes are arranged around the outer circumference of the lower packer lower head at intervals.
10. The integrated fracturing-shooting packer apparatus for hard and thick-top coal hydraulic fracturing as claimed in any one of claims 1 to 9, wherein the fracturing medium is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210148531.XA CN114542005B (en) | 2022-02-17 | 2022-02-17 | Pressure-injection integrated packer device for hydraulic fracturing of hard thick-roof coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210148531.XA CN114542005B (en) | 2022-02-17 | 2022-02-17 | Pressure-injection integrated packer device for hydraulic fracturing of hard thick-roof coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114542005A true CN114542005A (en) | 2022-05-27 |
| CN114542005B CN114542005B (en) | 2024-03-15 |
Family
ID=81676236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210148531.XA Active CN114542005B (en) | 2022-02-17 | 2022-02-17 | Pressure-injection integrated packer device for hydraulic fracturing of hard thick-roof coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114542005B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265487A (en) * | 1978-04-10 | 1981-05-05 | The Curators Of The University Of Missouri | High pressure water jet mining machine |
| RU2396429C1 (en) * | 2009-07-09 | 2010-08-10 | Анатолий Николаевич Осипов | Procedure for weakening marginal massif of mine workings at development of coal beds |
| CN109736805A (en) * | 2018-12-12 | 2019-05-10 | 天地科技股份有限公司 | A kind of method of the modified release watershed management bump of thick-layer tight roof |
| CN110284921A (en) * | 2019-04-24 | 2019-09-27 | 山东科技大学 | A kind of severe inclined thick coal seam mash gas harnessing method based on binary complex liquid |
| CN111255454A (en) * | 2020-01-17 | 2020-06-09 | 天地科技股份有限公司 | Method for directional roof cutting and pressure relief of hard roof of coal mine |
| CN112031772A (en) * | 2020-07-21 | 2020-12-04 | 大同煤矿集团有限责任公司 | Method for inducing overall damage of overlying residual coal pillars by using high-pressure water jet |
-
2022
- 2022-02-17 CN CN202210148531.XA patent/CN114542005B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265487A (en) * | 1978-04-10 | 1981-05-05 | The Curators Of The University Of Missouri | High pressure water jet mining machine |
| RU2396429C1 (en) * | 2009-07-09 | 2010-08-10 | Анатолий Николаевич Осипов | Procedure for weakening marginal massif of mine workings at development of coal beds |
| CN109736805A (en) * | 2018-12-12 | 2019-05-10 | 天地科技股份有限公司 | A kind of method of the modified release watershed management bump of thick-layer tight roof |
| CN110284921A (en) * | 2019-04-24 | 2019-09-27 | 山东科技大学 | A kind of severe inclined thick coal seam mash gas harnessing method based on binary complex liquid |
| CN111255454A (en) * | 2020-01-17 | 2020-06-09 | 天地科技股份有限公司 | Method for directional roof cutting and pressure relief of hard roof of coal mine |
| CN112031772A (en) * | 2020-07-21 | 2020-12-04 | 大同煤矿集团有限责任公司 | Method for inducing overall damage of overlying residual coal pillars by using high-pressure water jet |
Non-Patent Citations (1)
| Title |
|---|
| 庞立宁: "坚硬煤体水力压裂联合深孔爆破提高块煤率研究", 煤炭工程, vol. 53, no. 10, pages 79 - 83 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114542005B (en) | 2024-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101586441B (en) | High-pressure water jet system and method for drilling and enlarging holes on coal bed | |
| CN205748141U (en) | A kind of Tunnel Blasting charge constitution | |
| CN108547604B (en) | Drilling and stamping integrated device and method | |
| CN204098878U (en) | Device made by a kind of abrasive material perforation sandblasting pressure break connection | |
| CN201460734U (en) | High-pressure water jet coal seam drilling and reaming system | |
| CN102094668B (en) | High-pressure hydraulic tunneling, pressure releasing and protrusion removing method for upper drainage roadway | |
| CN108678802A (en) | A kind of coal mine bores, punching, takes out integrated outburst prevention device and method | |
| CN110984130B (en) | Slurry stopping system and method for preventing blockage and slurry return outside hole of crushing belt | |
| CN103883303A (en) | Orientation jetting and fracturing exploitation method for coal bed gas under coal mine | |
| CN107605441B (en) | Device and method for introducing liquid nitrogen into open hole well | |
| CN105649625B (en) | A kind of high-low pressure subregion fracturing anatonosis formula coal-bed flooding method | |
| WO2019205472A1 (en) | Controllable pressure injection apparatus based on hydraulic accumulator and method therefor | |
| CN105863694B (en) | Chamber device and its construction method are expanded in a kind of anchor pole end | |
| CN208416512U (en) | A kind of brill punching press integrated apparatus | |
| CN101377124B (en) | Horizontal bare hole flow guiding slot well and method for mining coal bed gas of sugarcoated haw well | |
| CN110410053A (en) | Coal mine roof plate pressure relief method based on eyelet supporting | |
| CN106437522A (en) | Deep-level and high-ground-stress coal uncovering and drilling construction device and method | |
| CN204572026U (en) | A kind of Multifunctional anchor rod device | |
| CN114542005A (en) | Hard thick top coal hydraulic fracturing is with pressing-penetrating integration packer device | |
| CN101881150A (en) | Hydraulic cutting nozzle with residue filer device | |
| CN209687432U (en) | A kind of interior deslagging high pressure end face sealing drilling rod | |
| CN201588542U (en) | Self-advancing high-pressure jet head for horizontal drilling | |
| CN216306002U (en) | Hydraulic cavitation orifice prevention device | |
| CN113756742B (en) | Secondary hole sealing method for underground coal mine gas drainage borehole | |
| CN201953367U (en) | Underground drilling and pressurizing integrated staged fracturing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |