CN111364942B - Pipe diameter taper sealing water stop valve - Google Patents
Pipe diameter taper sealing water stop valve Download PDFInfo
- Publication number
- CN111364942B CN111364942B CN202010194400.6A CN202010194400A CN111364942B CN 111364942 B CN111364942 B CN 111364942B CN 202010194400 A CN202010194400 A CN 202010194400A CN 111364942 B CN111364942 B CN 111364942B
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- pipe
- inner tube
- tube
- wall
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000007789 sealing Methods 0.000 title claims abstract description 27
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims 2
- 239000003245 coal Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 238000005065 mining Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 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
- 230000002265 prevention Effects 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in 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)
Abstract
The invention discloses a pipe diameter taper sealing water stop valve, which comprises an outer pipe, an inner pipe and a drill pipe, wherein a flower pipe is arranged above the outer pipe, water holes are uniformly formed in the pipe wall of the flower pipe, and meanwhile, the inner diameter of the outer pipe is set to be a structure with a wide middle part and narrow two end parts; the middle part of the inner tube is of a penetrating structure, a plurality of groups of annular bulges are arranged on the outer wall where the inner tube is located, gaps are reserved between every two groups of annular bulges, rubber sealing rings are filled between the annular bulges, the inner tube is arranged in the outer tube, the rubber sealing rings of the inner tube are attached to the inner walls of the two end parts of the outer tube, and gaps are reserved between the rubber sealing rings of the inner tube and the inner walls of the middle part of the outer tube; the front end of the drill rod extends out the middle part of the inner tube is downward.
Description
Technical Field
The invention belongs to the technical field of coal mine prevention and control water, and particularly relates to a pipe diameter taper sealing water stop valve.
Background
Along with the continuous development of the current technology, coal is taken as an energy resource and plays an important role in the economic development. When coal is mined, the purpose of drilling construction is to liberate 'five-contained' pressed coal, and the construction of dredging and lowering 'five-contained' water-rich drilling needs to overcome two technical difficulties: firstly, accurately controlling the open-eye track, ensuring that the open-eye track is close to a drainage roadway, and facilitating underground searching and installing underground facilities; secondly, the lower section of the water filtering flower pipe is used for construction and well cementation, so that the lower section well cementation quality is met, and water burst is prevented from being caused, and the coal mine safety production is prevented from being influenced. According to the design requirement, the oil casing with the diameter of 244.5mm is well cemented under the condition of 265m, the oil casing with the diameter of 244.8 mm is well cemented under the condition of 450m and the oil casing with the diameter of 177.8mm is well cemented and water is stopped under the condition of five sections. After the water stopping is up to the requirement, the five-water-containing water is blocked, and after the water control device is installed underground, the five-water-containing water is dredged. Because the five-component water-rich water is large, the water-tight plugging device is safe for drilling construction, well cementation operation and water-tight plugging.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the pipe diameter taper sealing water stop valve, which solves the problems that the water is relatively rich, the drilling construction is safe, the well cementation operation and the water stop blocking are difficult when coal mining is performed in the prior art.
The aim of the invention can be achieved by the following technical scheme:
The pipe diameter taper sealing water stop valve comprises an outer pipe, an inner pipe and a drill pipe, wherein a flower pipe is arranged above the outer pipe, water holes are uniformly formed in the pipe wall of the flower pipe, and meanwhile, the inner diameter of the outer pipe is set to be of a structure with a wide middle part and narrow two end parts;
The middle part of the inner tube is of a penetrating structure, a plurality of groups of annular bulges are arranged on the outer wall where the inner tube is located, gaps are reserved between every two groups of annular bulges, rubber sealing rings are filled between the annular bulges, the inner tube is arranged in the outer tube, the rubber sealing rings of the inner tube are attached to the inner walls of the two end parts of the outer tube, and gaps are reserved between the rubber sealing rings of the inner tube and the inner walls of the middle part of the outer tube;
The front end of the drill rod extends out the middle part of the inner tube is downward.
Further, the drill rod is higher than the ground by more than 2 m.
Furthermore, the outer wall of the outer tube is in a structure with narrow two end parts and wide middle part, and the taper is 6.
Further, the thickness of the pipe wall at the two ends of the outer pipe is larger than that at the middle.
Further, the height of the annular protrusions of the inner tube is 3-5mm, and the gaps between each group of annular protrusions are 5-8mm.
The invention has the beneficial effects that:
The device solves the technical problems of construction and drainage under the condition of drainage depressurization during coal mining interfered by aquifer. So that the whole water drainage process is controllable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.
FIG. 1 is a schematic view of the overall structure of an outer tube according to an embodiment of the present invention;
FIG. 2 is a schematic view of the overall structure of an inner tube according to an embodiment of the present invention;
FIG. 3 is a schematic view of a usage status structure of an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a connection state of an outer pipe and an inner pipe according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the embodiment of the invention provides a pipe diameter taper sealing water stop valve, which comprises an outer pipe 1, an inner pipe 2 and a drill pipe 3, wherein a flower pipe 11 is arranged above the outer pipe 1, water through holes 101 are uniformly formed in the pipe wall of the flower pipe 11, and meanwhile, the inner diameter of the outer pipe 1 is set to be of a structure with a wide middle part and narrow two end parts. The outer wall where the outer tube 1 is positioned has a structure with narrow two ends and wide middle part, and the taper is 1:16. Is convenient for moving up and down in the well drilling, avoids being blocked, the drill rod 3 is higher than the ground by more than 2 m. Meanwhile, the thickness of the pipe wall where the two ends of the outer pipe 1 are positioned is larger than that of the pipe wall where the middle part is positioned.
As shown in fig. 2, the middle part of the inner tube 2 is a penetrating structure, a plurality of groups of annular protrusions 201 are arranged on the outer wall of the inner tube 2, gaps are reserved between every two groups of annular protrusions 201, the height of the annular protrusions 201 of the inner tube 2 is 3-5mm, and the gaps between every two groups of annular protrusions 201 are 5-8mm. And the rubber sealing rings 202 are filled between the gaps of the annular protrusions 201, the inner tube 2 is arranged in the outer tube 1, the rubber sealing rings 202 of the inner tube 2 are attached to the inner walls of the two end parts of the outer tube 1, and meanwhile, gaps are reserved between the rubber sealing rings 202 of the inner tube 2 and the inner walls of the middle part of the outer tube 1. The front end of the drill rod 3 extends out the middle part of the inner tube 2 is downward, and the drill rod 3 is tightly and tightly connected with the middle part of the inner pipe 2.
As shown in fig. 3 and 4, when in use, the outer tube 1 is lowered into the outer tube 1 along with the flower tube 11 to a position 5m below the water-bearing layer, then is lowered into the inner tube 2, the drill rod 3 is connected to the upper end of the inner tube 2, the inner tube 2 is directly sleeved in the middle of the outer tube 1, meanwhile, due to the action of gravity, the rubber sealing ring 202 on the inner tube 2 and the lower part of the outer tube 1 form a sealing structure, then grouting and cementing are started, and after grouting, the outer tube 1 and the inner tube 2 are in sealing fit with each other, so that the plugging effect on five water-bearing layers can be achieved.
Simultaneously, after grouting is completed, the inner tube 2 is lifted up, the outer wall of the inner tube 2 and the bottom inner wall of the outer tube 1 are separated from each other, water stagnating above the inner tube 2 flows out to the lower side from a gap between the middle part of the inner wall of the outer tube 1 and the outer wall of the inner tube 2, and then water below is directly pumped out by a pump at a drilling position, so that a water-bearing layer stagnates above the inner tube 2 completely, and convenience is brought to constructors to go into the well for maintenance operation.
The invention solves the construction and drainage technical problems under the condition of drainage depressurization during coal mining interfered by aquifer. So that the whole water drainage process is controllable.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.
Claims (2)
1. The pipe diameter taper sealing water stop valve comprises an outer pipe (1), an inner pipe (2) and a drill pipe (3), and is characterized in that a flower pipe (11) is arranged above the outer pipe (1), water holes (101) are uniformly formed in the pipe wall of the flower pipe (11), and meanwhile, the inner diameter of the outer pipe (1) is set to be of a structure with a wide middle part and narrow two end parts;
The middle part of the inner tube (2) is of a penetrating structure, a plurality of groups of annular protrusions (201) are arranged on the outer wall of the inner tube (2), gaps are reserved between every two groups of annular protrusions (201), rubber sealing rings (202) are filled between the gaps of the annular protrusions (201), the inner tube (2) is arranged in the outer tube (1), the rubber sealing rings (202) of the inner tube (2) are attached to the inner walls of the two end parts of the outer tube (1), and gaps are reserved between the rubber sealing rings (202) of the inner tube (2) and the inner walls of the middle part of the outer tube (1);
the front end of the drill rod (3) extends out of the middle part of the inner pipe (2) and downward;
The outer wall of the outer tube (1) is of a structure with narrow two end parts and wide middle part, and the taper is 1:16;
the thickness of the pipe wall where the two ends of the outer pipe (1) are positioned is larger than that of the pipe wall where the middle part is positioned;
The height of the annular protrusions (201) of the inner tube (2) is 3-5mm, and the gaps between each group of annular protrusions (201) are 5-8mm;
When the grouting device is used, the outer pipe (1) is placed into the position of the bottom 5m of the water-bearing layer along with the flower pipe (11), then is placed into the inner pipe (2), the drill rod (3) is connected to the upper end of the inner pipe (2), the inner pipe (2) is directly sleeved in the middle of the outer pipe (1), a sealing structure is formed between the rubber sealing ring (202) on the inner pipe (2) and the lower part of the outer pipe (1) due to the action of gravity, grouting and well cementation are started, and the inner pipe (2) and the outer pipe (1) are in sealing fit after grouting to play a role in plugging five water-bearing layers;
Simultaneously after grouting is completed, the inner tube (2) is lifted upwards, the outer wall of the inner tube (2) and the bottom inner wall of the outer tube (1) are mutually separated, water retained above the inner tube (2) flows out to the lower part from a gap between the middle part of the inner wall of the outer tube (1) and the outer wall of the inner tube (2), and then the water below is directly pumped out by a pump at a drilling part, so that a water-bearing layer is retained above the inner tube (2) and flows out, and convenience is brought to constructors to go into the well for maintenance operation.
2. The pipe diameter taper sealing water stop valve according to claim 1, wherein the drill pipe (3) is higher than the ground by more than 2 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194400.6A CN111364942B (en) | 2020-03-19 | 2020-03-19 | Pipe diameter taper sealing water stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194400.6A CN111364942B (en) | 2020-03-19 | 2020-03-19 | Pipe diameter taper sealing water stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111364942A CN111364942A (en) | 2020-07-03 |
| CN111364942B true CN111364942B (en) | 2024-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010194400.6A Active CN111364942B (en) | 2020-03-19 | 2020-03-19 | Pipe diameter taper sealing water stop valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN111364942B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468528A (en) * | 2018-05-18 | 2018-08-31 | 河北省地矿局国土资源勘查中心 | Fourth-series deep well layered water pumping and stopping device and water pumping and stopping method thereof |
| CN212359711U (en) * | 2020-03-19 | 2021-01-15 | 中勘资源勘探科技股份有限公司 | Pipe diameter taper sealing water stop valve |
Family Cites Families (17)
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| US1459990A (en) * | 1922-05-08 | 1923-06-26 | Warren B Reed | Process of setting casing and cementing the same |
| US4300631A (en) * | 1980-04-23 | 1981-11-17 | The United States Of America As Represented By The Secretary Of The Interior | Flexible continuous grout filled packer for use with a water infusion system |
| JPH07107261B2 (en) * | 1987-07-31 | 1995-11-15 | 株式会社竹中工務店 | Filling for soil ▼ Sealing material and various sealing methods using it |
| US4979562A (en) * | 1988-10-21 | 1990-12-25 | Weatherford U.S., Inc. | Float equipment including float collars and modular plugs for well operations |
| JPH0626614Y2 (en) * | 1990-11-30 | 1994-07-20 | 株式会社ホウショウ | In-pipe water stop device |
| JP4609964B2 (en) * | 2000-03-31 | 2011-01-12 | 大成建設株式会社 | Water stop packer and water stop method for wells |
| GB0023032D0 (en) * | 2000-09-20 | 2000-11-01 | Weatherford Lamb | Downhole apparatus |
| JP2002357073A (en) * | 2001-05-30 | 2002-12-13 | I Jii Kogyo:Kk | Core gathering instrument |
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| CN207033402U (en) * | 2017-07-20 | 2018-02-23 | 淮南矿业(集团)有限责任公司 | Ground gas extraction drilling well platen sealing device |
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2020
- 2020-03-19 CN CN202010194400.6A patent/CN111364942B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468528A (en) * | 2018-05-18 | 2018-08-31 | 河北省地矿局国土资源勘查中心 | Fourth-series deep well layered water pumping and stopping device and water pumping and stopping method thereof |
| CN212359711U (en) * | 2020-03-19 | 2021-01-15 | 中勘资源勘探科技股份有限公司 | Pipe diameter taper sealing water stop valve |
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| CN111364942A (en) | 2020-07-03 |
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