CN111608628A - Novel hydraulic fracturing hole packer - Google Patents
Novel hydraulic fracturing hole packer Download PDFInfo
- Publication number
- CN111608628A CN111608628A CN202010543287.8A CN202010543287A CN111608628A CN 111608628 A CN111608628 A CN 111608628A CN 202010543287 A CN202010543287 A CN 202010543287A CN 111608628 A CN111608628 A CN 111608628A
- Authority
- CN
- China
- Prior art keywords
- hole packer
- pipe
- hydraulic fracturing
- water injection
- middle core
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000002347 injection Methods 0.000 claims abstract description 41
- 239000007924 injection Substances 0.000 claims abstract description 41
- 229910052742 iron Inorganic materials 0.000 claims abstract description 27
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000003245 coal Substances 0.000 description 16
- 239000011435 rock Substances 0.000 description 8
- 239000002360 explosive Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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
- 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
-
- 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
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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)
- Piles And Underground Anchors (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a novel hydraulic fracturing hole packer which comprises a hole packer, wherein a water injection joint is fixedly arranged at one end of the hole packer, an expansion rubber pipe is arranged at one end, away from a water injection port, of the water injection joint, the water injection joint is fixedly connected with the expansion rubber pipe through a lock pipe iron sheet, a middle core is arranged at one end, away from the water injection joint, of the expansion rubber pipe, the middle core is fixedly connected with the expansion rubber pipe through the lock pipe iron sheet, a connecting pipe is arranged at one end, away from the expansion rubber pipe, of the middle core, a water outlet hole is formed in the connecting pipe, a hole packer II is fixedly arranged at one end, away from the hole packer, of the connecting pipe, and a blocking core is fixedly arranged at one end, away from the. The novel hydraulic fracturing hole packer is simple in structure, convenient to operate, time-saving and low in cost.
Description
Technical Field
The invention belongs to the technical field of hole packer equipment, and particularly relates to a novel hydraulic fracturing hole packer.
Background
The hole packer is a sealing device for coal bed gas drainage and coal bed water injection drill hole orifices, and mainly comprises a gas drainage hole packer and a coal bed water injection hole packer. In the traditional method, the coal bed rock stratum is exploded by explosive, so that the explosive is too dangerous and potential safety hazards are easily caused. At present, people often use a hole packer to break coal, can effectively prevent coal and gas outburst and explosion, inject water under high pressure, break coal bodies, reduce initiating explosive products, reduce cost and increase the safety of workers. However, the iron parts of the hydraulic fracturing hole packer on the market have more structures and are heavy, and the water injection expansion interface of the hole packer is not convenient to use and wastes resources. Therefore, a novel hydraulic fracturing hole packer is provided.
Disclosure of Invention
The invention provides a novel hydraulic fracturing hole packer, and aims to solve the problems of inconvenience in use, resource waste and insecurity.
The invention discloses a novel hydraulic fracturing hole packer which comprises a hole packer, wherein a water injection joint is fixedly arranged at one end of the hole packer, an expansion rubber pipe is arranged at one end, away from a water injection port, of the water injection joint, the water injection joint is fixedly connected with the expansion rubber pipe through a lock pipe iron sheet, a middle core is arranged at one end, away from the water injection joint, of the expansion rubber pipe, the middle core is fixedly connected with the expansion rubber pipe through the lock pipe iron sheet, a connecting pipe is arranged at one end, away from the expansion rubber pipe, of the middle core, a water outlet hole is formed in the connecting pipe, a second hole packer is fixedly arranged at one end, away from the first hole packer, of the connecting pipe, and a blocking core is fixedly arranged at one end, away from the.
Preferably, the inner wall of the lock tube iron sheet is fixedly provided with a bulge.
Preferably, the middle core is Y-shaped, one end of the middle core is inserted into the expansion rubber pipe, the other end of the middle core is clamped with the connecting pipe, and a groove is formed in the outer surface of the middle core.
Preferably, a sealing rubber gasket is fixedly arranged between the middle core and the connecting pipe.
Preferably, the outer surface of the connecting pipe is provided with a thin iron pipe.
Preferably, one side of the novel hydraulic fracturing hole packer is connected with a high-pressure water injection pump through a water pipe
Preferably, a protection pad is fixedly arranged on the outer surface of the lock tube iron sheet.
Preferably, the two ends of the outer surface of the connecting pipe are fixedly provided with L-shaped clamping heads, the two sides of the inner part of the top end of the middle core are fixedly provided with elastic clamping blocks, and springs are arranged inside the elastic clamping blocks.
Compared with the prior art, the invention has the beneficial effects that:
according to the equipment, the two ends of the outer surface of the connecting pipe are fixedly provided with the L-shaped chucks, the two sides of the inner part of the top end of the middle core are fixedly provided with the elastic fixture blocks, the springs are arranged in the elastic fixture blocks, when the novel hydraulic fracturing hole packer is installed, the front end of the middle core is inserted opposite to the L-shaped chucks, the wider part of the front end of the L-shaped chuck extrudes the elastic fixture blocks, the elastic fixture blocks shrink, the wider part of the front end of the L-shaped chuck penetrates through the elastic fixture blocks, the elastic fixture blocks disappear under stress and recover to the original shape, and therefore the middle core and the connecting pipe are effectively clamped with each other, and further the middle core and the connecting pipe are effectively fixed, so. The first hole packer and the second hole packer are in a communicated state, media such as water and the like are injected from the first hole packer, the hole packer is expanded and sealed through the flow difference, and water is continuously injected to enable the pressure of the media such as water and the like between the middle of the first hole packer and the second hole packer and the coal seam rock stratum to reach the coal seam fracturing pressure. The coal seam rock stratum fracturing device has the advantages that the coal seam rock stratum fracturing effect can be achieved, explosive and the existing fracturing hole packer in the market are replaced, a hole packer water injection expansion interface is additionally arranged, the defect that the hole packer is troublesome in expansion operation is overcome, and the thin iron pipe sleeved on the connecting pipe prevents high-pressure water flow from directly scouring the hole wall. The novel hydraulic fracturing hole packer is simple in structure, convenient to use, less in consumed time and low in cost. The operation and use are very simple. The during operation is because directly use high-pressure water injection pump, and the fast operating time of water injection is short, can effectively improve work efficiency. The hole packer can greatly reduce the labor intensity of workers due to the fact that a large number of iron pieces are reduced, and the weight is light.
Drawings
FIG. 1 is a cross-sectional view of a front view of a novel hydraulic fracture hole packer of the present invention;
FIG. 2 is a schematic structural diagram of the joint of an expansion rubber pipe, a middle core and a lock pipe iron sheet of the novel hydraulic fracture hole packer;
fig. 3 is a schematic structural diagram of a high-pressure water injection pump of the novel hydraulic fracturing hole packer.
Fig. 4 is an enlarged schematic view of the structure at a position a in fig. 1 of the novel hydraulic fracturing hole packer.
In the figure: 1. a first hole packer; 2. a second hole packer; 3. a water injection joint; 4. locking the pipe iron sheet; 5. an expansion rubber tube; 6. a middle core; 7. a water outlet hole; 8. a thin iron pipe; 9. sealing the rubber gasket; 10. blocking the core; 11. a protrusion; 12. a connecting pipe; 13. a high-pressure water injection pump; 14. a groove; 15. a protection pad; 16. an elastic clamping block; 17. a spring; 18. an L-shaped chuck.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Please refer to fig. 1-4, a novel hydraulic fracturing hole packer comprises a hole packer 1, wherein a water injection joint 3 is fixedly arranged at one end of the hole packer 1, an expansion rubber pipe 5 is arranged at one end, away from a water injection port, of the water injection joint 3, the water injection joint 3 is fixedly connected with the expansion rubber pipe 5 through a pipe locking iron sheet 4, a middle core 6 is arranged at one end, away from the water injection joint 3, of the expansion rubber pipe 5, the middle core 6 is fixedly connected with the expansion rubber pipe 5 through the pipe locking iron sheet 4, a connecting pipe 12 is arranged at one end, away from the expansion rubber pipe 5, of the middle core 6, a water outlet hole 7 is formed in the connecting pipe 12, a hole packer 2 is fixedly arranged at one end, away from the hole packer 1, of the connecting pipe 12, and a blocking core 10 is fixedly arranged at one end, away from the connecting pipe.
The inner wall of the lock pipe iron sheet 4 is fixedly provided with the bulge 11, so that the expansion rubber pipe 5 is effectively clamped, the friction force between the lock pipe iron sheet 4 and the expansion rubber pipe 5 is increased, and the expansion rubber pipe 5 is prevented from falling off.
The middle core 6 is Y-shaped, one end of the middle core is inserted into the expansion rubber tube 5, the other end of the middle core is clamped with the connecting tube 12, the outer surface of the middle core 6 is provided with the groove 14, the middle core and the expansion rubber tube 5 are effectively clamped with each other, and the expansion rubber tube 5 and the middle core 6 are further fixed tightly.
According to the invention, the sealing rubber gasket 9 is fixedly arranged between the middle core 6 and the connecting pipe 12, so that water loss caused by the existence of a gap is effectively prevented, further, the pressure intensity in the pipe is not enough, meanwhile, the friction between the connecting pipe 12 and the middle core 6 can be effectively reduced, the damage is caused, and the service life of the equipment is effectively prolonged.
According to the invention, the thin iron pipe 8 is arranged on the outer surface of the connecting pipe 12, so that high-pressure water flow is effectively prevented from directly scouring the hole wall.
One side of the novel hydraulic fracturing hole packer is connected with a high-pressure water injection pump 13 through a water pipe, the high-pressure water injection pump 13 is directly used, the water injection speed is high, the working time is short, and the working efficiency can be effectively improved
According to the invention, the protective pad 15 is fixedly arranged on the outer surface of the lock pipe iron sheet 4, so that the damage caused by the friction between the lock pipe iron sheet 4 and the ground or coal rock strata and the like can be effectively reduced, the occurrence of accidents can be effectively reduced, and the service life of the lock pipe iron sheet 4 can be effectively prolonged.
According to the hydraulic fracturing hole packer, L-shaped chucks 18 are fixedly arranged at two ends of the outer surface of the connecting pipe 12, elastic fixture blocks 16 are fixedly arranged at two sides of the inside of the top end of the middle core 6, springs 17 are arranged inside the elastic fixture blocks 16, when the novel hydraulic fracturing hole packer is installed, the front end of the middle core 6 is inserted towards the L-shaped chucks 18, the wider part of the front end of the L-shaped chucks 18 extrudes the elastic fixture blocks 16, the elastic fixture blocks 16 contract, the wider part of the front end of the L-shaped chucks 18 penetrates through the elastic fixture blocks 16, the elastic fixture blocks 16 lose stress and recover to the original shape, and therefore the elastic fixture blocks are effectively clamped with the L-shaped chucks 18, and further the.
The working principle of the invention is as follows: when the hydraulic fracturing hole packer is used, firstly, the novel hydraulic fracturing hole packer is conveyed to a working position in a coal bed rock stratum hole, then one end of a water pipe is connected to a water injection joint 3, the other end of the water pipe is connected to a water outlet of a high-pressure water injection pump 13, water is directly injected after the high-pressure water injection pump 13 is connected, a first hole packer 1 and a second hole packer 2 are in a communicated state, a blocking core 10 can effectively seal the other end of the second hole packer 2, water and other media are injected from the first hole packer 1, the first hole packer 1 and the second hole packer 2 are expanded and sealed through flow difference, water injection is continued to enable the medium pressure between the first hole packer 1 and the second hole packer 2 and the coal bed rock stratum water and other medium pressure to reach the coal bed fracturing pressure, the coal bed rock stratum fracturing effect can be achieved, the novel hydraulic fracturing hole packer can be pumped out through pressure relief after work is finished. The defect that the expansion operation of the hole packer is troublesome due to the fact that an explosive and the existing fracturing hole packer in the market are additionally provided with a hole packer water injection expansion interface is replaced, and the thin iron pipe 8 sleeved on the connecting pipe 12 prevents high-pressure water flow from directly washing the hole wall. The novel hydraulic fracturing hole packer is simple in structure, convenient to use, less in consumed time and low in cost. The operation and use are very simple. The high-pressure water injection pump 13 is directly used during working, so that the water injection speed is high, the working time is short, and the working efficiency can be effectively improved. The hole packer can greatly reduce the labor intensity of workers due to the fact that a large number of iron pieces are reduced, and the weight is light.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a novel hydraulic fracturing hole packer, includes hole packer (1), its characterized in that: one end of the first hole packer (1) is fixedly provided with a water injection joint (3), one end of the water injection joint (3) far away from a water injection port is provided with an expansion rubber pipe (5), the water injection joint (3) is fixedly connected with the expansion rubber pipe (5) through a lock pipe iron sheet (4), one end of the expansion rubber pipe (5) far away from the water injection joint (3) is provided with a middle core (6), the middle core (6) is fixedly connected with the expansion rubber pipe (5) through a lock pipe iron sheet (4), one end of the middle core (6) far away from the expansion rubber pipe (5) is provided with a connecting pipe (12), a water outlet hole (7) is formed in the connecting pipe (12), a second hole packer (2) is fixedly arranged at one end of the connecting pipe (12) far away from the first hole packer (1), and a blocking core (10) is fixedly arranged at one end of the second hole packer (2) far away from the connecting pipe (12).
2. The novel hydraulic fracturing hole packer as claimed in claim 1, characterized in that: the inner wall of the lock tube iron sheet (4) is fixedly provided with a bulge (11).
3. The novel hydraulic fracturing hole packer as claimed in claim 1, characterized in that: the middle core (6) is Y-shaped, one end of the middle core is inserted into the expansion rubber pipe (5), the other end of the middle core is clamped with the connecting pipe (12), and a groove (14) is formed in the outer surface of the middle core (6).
4. The novel hydraulic fracturing hole packer as claimed in claim 1, characterized in that: and a sealing rubber gasket (9) is fixedly arranged between the middle core (6) and the connecting pipe (12).
5. The novel hydraulic fracturing hole packer as claimed in claim 1, characterized in that: the outer surface of the connecting pipe (12) is provided with a thin iron pipe (8).
6. The novel hydraulic fracturing hole packer as claimed in claim 1, characterized in that: one side of the novel hydraulic fracturing hole packer is connected with a high-pressure water injection pump (13) through a water pipe.
7. The novel hydraulic fracturing hole packer as claimed in claim 1, characterized in that: and a protective pad (15) is fixedly arranged on the outer surface of the lock tube iron sheet (4).
8. The novel hydraulic fracturing hole packer as claimed in claim 1, characterized in that: the connecting pipe is characterized in that L-shaped clamping heads (18) are fixedly arranged at two ends of the outer surface of the connecting pipe (12), elastic clamping blocks (16) are fixedly arranged at two sides of the inner portion of the top end of the middle core (6), and springs (17) are arranged inside the elastic clamping blocks (16).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020104908073 | 2020-06-02 | ||
| CN202010490807 | 2020-06-02 |
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| Publication Number | Publication Date |
|---|---|
| CN111608628A true CN111608628A (en) | 2020-09-01 |
| CN111608628B CN111608628B (en) | 2024-02-20 |
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| CN202010543287.8A Active CN111608628B (en) | 2020-06-02 | 2020-06-15 | Novel hydraulic fracturing hole packer |
| CN202021101787.8U Active CN212428775U (en) | 2020-06-02 | 2020-06-15 | Novel hydraulic fracturing hole packer |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021101787.8U Active CN212428775U (en) | 2020-06-02 | 2020-06-15 | Novel hydraulic fracturing hole packer |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608628B (en) * | 2020-06-02 | 2024-02-20 | 周春雷 | Novel hydraulic fracturing hole packer |
| CN114876402A (en) * | 2022-04-27 | 2022-08-09 | 陕西省煤田地质集团有限公司 | Well cementation device and well cementation method |
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2020
- 2020-06-15 CN CN202010543287.8A patent/CN111608628B/en active Active
- 2020-06-15 CN CN202021101787.8U patent/CN212428775U/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN212428775U (en) | 2021-01-29 |
| CN111608628B (en) | 2024-02-20 |
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