CN107503716B - Gravel reverse feeding device for in-situ leaching uranium mining built-in filter - Google Patents
Gravel reverse feeding device for in-situ leaching uranium mining built-in filter Download PDFInfo
- Publication number
- CN107503716B CN107503716B CN201610416845.8A CN201610416845A CN107503716B CN 107503716 B CN107503716 B CN 107503716B CN 201610416845 A CN201610416845 A CN 201610416845A CN 107503716 B CN107503716 B CN 107503716B
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- Prior art keywords
- gravel
- reverse
- screw thread
- filter
- built
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- 229910052770 Uranium Inorganic materials 0.000 title claims abstract description 27
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000002386 leaching Methods 0.000 title claims abstract description 26
- 238000005065 mining Methods 0.000 title claims abstract description 26
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 24
- 230000001681 protective effect Effects 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000926 separation method 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
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of wells
-
- 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
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
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- 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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention belongs to the technical field of in-situ leaching uranium mining, and particularly relates to a gravel reverse feeding device for an in-situ leaching uranium mining built-in filter. Comprises a reverse gravel feeder and a lower protective pipe; the reverse gravel feeder is of a tubular structure, one end of the reverse gravel feeder is a female screw thread, the other end of the reverse gravel feeder is a male screw thread, one end of the male screw thread is provided with a one-way valve, the circular cover plate is connected with one end of the reverse gravel feeder male screw thread through a hinge, and the middle part of the hinge is provided with a torsion spring, so that the circular cover plate can be automatically closed; a reverse screw thread is processed in the middle of one end, close to the female screw thread, of the reverse gravel throwing device, and one end of the female screw thread of the reverse gravel throwing device is connected with the built-in filter; the lower protective pipe is of a tubular structure, one end of the lower protective pipe is a female screw thread, the other end of the lower protective pipe is a closed structure, four water passing grooves are formed in the periphery of the lower protective pipe, and one end of the female screw thread of the lower protective pipe is connected with one end of a male screw thread of the reverse gravel throwing device. The invention is matched with the built-in filter for use, can realize reverse gravel feeding after the built-in filter is put into the drill hole for in-situ leaching uranium mining, and solves the problem that gravel cannot be fed after the built-in filter is put into the drill hole.
Description
Technical Field
The invention belongs to the technical field of in-situ leaching uranium mining, and particularly relates to a gravel reverse feeding device for an in-situ leaching uranium mining built-in filter.
Background
Along with the operation of the in-situ leaching uranium mining mine, the drilling can lead to the drawing liquid volume to descend because of various problems suddenly, can't accomplish and take out, annotate the liquid operation, becomes inefficacy drilling. Filter plugging or breakage is a major cause of borehole failure. According to statistics, an average of 7% of drill holes in a mining area of a uranium mine in Xinjiang lose effectiveness due to filter blockage. The most effective way to solve the problem of failed drilling is to cut and repair the failed drilling. The method is widely applied in the United states, and the method that a cutting filter is adopted for the failed drilling hole and a built-in filter is arranged in the leaching mine of the U.S. uranium energy company for repairing is adopted. However, the gravel can not be thrown by a conventional method after the gravel is put into the built-in filter.
A conventional gravel throwing method for drilling holes in-situ leaching uranium mining is to put a casing pipe in, and then put a gravel throwing pipe outside the casing pipe for gravel throwing. However, after the built-in filter is put into the drill hole for in-situ leaching uranium mining, cement is arranged on the outer side of the upper part of the casing, and the conventional gravel throwing method cannot finish gravel throwing. The gravel is reversely thrown so that the gravel passes through the bottom of the filter and reaches the outer side of the filter, and the problem can be well solved. The reverse gravel-throwing device must satisfy two conditions: (1) the pressure of the gravel throwing pump can open a gravel throwing valve; (2) gravel can only pass through in one direction.
Disclosure of Invention
The invention aims to provide a reverse gravel feeding device for an in-situ leaching uranium mining built-in filter, which solves the problem that gravel cannot be fed after the built-in filter is drilled and lowered in the existing in-situ leaching uranium mining drill hole, can prevent the built-in filter from being blocked and prolongs the service life of the built-in filter.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a gravel reverse feeding device of a built-in filter for in-situ leaching uranium mining comprises a gravel reverse feeding device and a lower protection pipe; the reverse gravel feeder is of a tubular structure, one end of the reverse gravel feeder is a female screw thread, the other end of the reverse gravel feeder is a male screw thread, one end of the male screw thread is provided with a one-way valve, the circular cover plate is connected with one end of the reverse gravel feeder male screw thread through a hinge, and the middle part of the hinge is provided with a torsion spring, so that the circular cover plate can be automatically closed; a reverse screw thread is processed in the middle of one end, close to the female screw thread, of the reverse gravel throwing device, and one end of the female screw thread of the reverse gravel throwing device is connected with the built-in filter; the lower protective pipe is of a tubular structure, one end of the lower protective pipe is a female screw thread, the other end of the lower protective pipe is a closed structure, four water passing grooves are formed in the periphery of the lower protective pipe, and one end of the female screw thread of the lower protective pipe is connected with one end of a male screw thread of the reverse gravel throwing device.
The material of the reverse gravel throwing device is UPVC, PE, nylon or stainless steel.
The lower protective pipe is made of UPVC, PE, nylon or stainless steel.
The water passing groove is rectangular.
The reverse screw thread is connected with one end of a male screw thread of a gravel throwing pipe which penetrates through the built-in filter.
The hinge and the torsion spring are made of stainless steel.
The beneficial effects obtained by the invention are as follows:
the invention is matched with a built-in filter for use, can realize reverse gravel feeding after in-situ leaching uranium mining drilling repair, solves the problem that gravel feeding cannot be carried out after drilling cutting repair, and has the characteristics of low cost, simple processing and the like.
Drawings
FIG. 1 is a sectional view of a reverse gravel feeding device of an in-situ leaching uranium mining filter according to the present invention;
FIG. 2 is a cross-sectional view of a lower protection pipe of the in-situ leaching uranium mining filter reverse gravel feeding device;
FIG. 3 is a top cross-sectional view of a lower protection pipe of the in-situ leaching uranium mining filter reverse gravel feeding device according to the present invention;
FIG. 4 is a top view of a one-way valve of the reverse gravel feeding device of the in-situ leaching uranium mining filter of the invention;
FIG. 5 is a schematic view of a built-in filter of the in-situ leaching uranium mining built-in filter reverse gravel feeding device according to the present invention;
in the figure: 1. a reverse gravel feeder; 2. a one-way valve; 3. reverse threading; 4. a lower protective pipe; 5. passing through a water tank; 6. a hinge; 7. a torsion spring; 8. a circular cover plate; 9. a filter is arranged in the filter.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
As shown in fig. 1-5, the device for reversely feeding gravel into an in-situ leaching uranium mining filter comprises a reverse gravel feeder 1 and a lower protection pipe 4; the reverse gravel throwing device 1 is of a tubular structure, one end of the reverse gravel throwing device is a female screw thread, the other end of the reverse gravel throwing device is a male screw thread, one end of the male screw thread is provided with the one-way valve 2, the circular cover plate 8 is connected with one end of the male screw thread of the reverse gravel throwing device 1 through the hinge 6, and the middle of the hinge 6 is provided with the torsion spring 7, so that the circular cover plate 8 can be automatically closed. The reverse screw thread 3 is arranged in the middle of one end of the reverse gravel throwing device 1 close to the female screw thread, and one end of the male screw thread is screwed into the reverse screw thread 3 after the gravel throwing pipe passes through the built-in filter 9. One end of a female screw thread of the reverse gravel throwing device 1 is connected with the built-in filter 9; the lower protective pipe 4 is of a tubular structure, one end of the lower protective pipe is a female screw thread, the other end of the lower protective pipe is of a closed structure, four water passing grooves 5 are formed in the periphery of the lower protective pipe 4, the water passing grooves 5 are rectangular, and one end of the female screw thread of the lower protective pipe 4 is connected with one end of a male screw thread of the reverse gravel throwing device 1.
The materials of the reverse gravel feeder 1 and the lower protection pipe 4 are UPVC, PE, nylon or stainless steel, and the materials of the hinge 6 and the torsion spring 7 are stainless steel. The threads of the male screw thread and the female screw thread are trapezoidal threads, sawtooth threads or rectangular threads; the reverse screw thread 3 is a female screw thread, and the direction of the reverse screw thread 3 is opposite to that of the male screw thread and the female screw thread at two ends of the reverse gravel throwing device 1.
During the use, lower reverse throwing gravel device and built-in filter 9 to design position, 1 ~ 2 hours of stewing makes the inflation sticky tape fully expand, and built-in filter 9 begins to throw the gravel after being fixed in the sleeve pipe, throws gravel pipe clockwise rotation after the completion of throwing the gravel and throws gravel pipe, makes and throws gravel pipe and reverse throwing gravel ware 1 separation, lifts and throws gravel pipe and accomplish and throw the gravel.
Claims (5)
1. The utility model provides a gravel device is thrown in ground leaching uranium mining built-in filter reversal which characterized in that: comprises a reverse gravel feeder (1) and a lower protective pipe (4); the reverse gravel throwing device (1) is of a tubular structure, one end of the reverse gravel throwing device is a female screw thread, the other end of the reverse gravel throwing device is a male screw thread, one end of the male screw thread is provided with a one-way valve (2), a circular cover plate (8) is connected with one end of the male screw thread of the reverse gravel throwing device (1) through a hinge (6), and the middle part of the hinge (6) is provided with a torsion spring (7) so that the circular cover plate (8) can be automatically closed; a reverse screw thread (3) is processed in the middle of one end, close to the female screw thread, of the reverse gravel throwing device (1), and one end of the female screw thread of the reverse gravel throwing device (1) is connected with a built-in filter (9); the lower protection pipe (4) is of a tubular structure, one end of the lower protection pipe is a female screw thread, the other end of the lower protection pipe is of a closed structure, four water passing grooves (5) are formed in the periphery of the lower protection pipe (4), and one end of the female screw thread of the lower protection pipe (4) is connected with one end of a male screw thread of the reverse gravel feeder (1); the reverse screw thread (3) is connected with one end of a male screw thread of a gravel throwing pipe which penetrates through the built-in filter (9).
2. The in-situ leaching uranium mining built-in filter gravel reverse feeding device according to claim 1, wherein: the material of the reverse gravel throwing device (1) is UPVC, PE, nylon or stainless steel.
3. The in-situ leaching uranium mining built-in filter gravel reverse feeding device according to claim 1, wherein: the lower protective pipe (4) is made of UPVC, PE, nylon or stainless steel.
4. The in-situ leaching uranium mining built-in filter gravel reverse feeding device according to claim 1, wherein: the water passing groove (5) is rectangular.
5. The in-situ leaching uranium mining built-in filter gravel reverse feeding device according to claim 1, wherein: the hinge (6) and the torsion spring (7) are made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610416845.8A CN107503716B (en) | 2016-06-14 | 2016-06-14 | Gravel reverse feeding device for in-situ leaching uranium mining built-in filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610416845.8A CN107503716B (en) | 2016-06-14 | 2016-06-14 | Gravel reverse feeding device for in-situ leaching uranium mining built-in filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107503716A CN107503716A (en) | 2017-12-22 |
| CN107503716B true CN107503716B (en) | 2020-12-15 |
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ID=60679002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610416845.8A Active CN107503716B (en) | 2016-06-14 | 2016-06-14 | Gravel reverse feeding device for in-situ leaching uranium mining built-in filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107503716B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209276A (en) * | 2018-10-11 | 2019-01-15 | 中核通辽铀业有限责任公司 | A kind of method for repairing and mending of In-situ Leaching Uranium Mine production borehole damage |
| CN111878046A (en) * | 2020-09-02 | 2020-11-03 | 湖南中核勘探有限责任公司 | Reverse grain feeding device and method |
| CN113914831A (en) * | 2021-11-08 | 2022-01-11 | 核工业北京化工冶金研究院 | Reverse gravel throwing device and method |
| CN114016976B (en) * | 2021-11-25 | 2024-09-13 | 核工业北京化工冶金研究院 | Gravel throwing valve assembly, forward gravel throwing device and forward gravel throwing method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4691775A (en) * | 1986-03-25 | 1987-09-08 | Dresser Industries, Inc. | Isolation valve with frangible flapper element |
| JP2881125B2 (en) * | 1995-08-28 | 1999-04-12 | 三協工業株式会社 | Partial surging block |
| US6575246B2 (en) * | 1999-04-30 | 2003-06-10 | Schlumberger Technology Corporation | Method and apparatus for gravel packing with a pressure maintenance tool |
| WO2001020124A1 (en) * | 1999-09-10 | 2001-03-22 | Bj Services Company | Method and apparatus for through tubing gravel packing, cleaning and lifting |
| CN2464934Y (en) * | 2000-11-17 | 2001-12-12 | 核工业第六研究所 | Filter for underground extracting liquid |
| CN202560183U (en) * | 2012-05-21 | 2012-11-28 | 中国石油天然气股份有限公司 | Horizontal well gravel packing tool |
| CN204851143U (en) * | 2015-07-28 | 2015-12-09 | 中石化石油工程技术服务有限公司 | Sucker rod socket |
| CN204941482U (en) * | 2015-08-21 | 2016-01-06 | 中国石油天然气股份有限公司 | Gravel filling device capable of washing sand |
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2016
- 2016-06-14 CN CN201610416845.8A patent/CN107503716B/en active Active
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| Publication number | Publication date |
|---|---|
| CN107503716A (en) | 2017-12-22 |
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