CN103821483B - The special block-proof type filter sieve tube of a kind of coal bed gas well mining - Google Patents
The special block-proof type filter sieve tube of a kind of coal bed gas well mining Download PDFInfo
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- CN103821483B CN103821483B CN201410080460.XA CN201410080460A CN103821483B CN 103821483 B CN103821483 B CN 103821483B CN 201410080460 A CN201410080460 A CN 201410080460A CN 103821483 B CN103821483 B CN 103821483B
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Abstract
The invention belongs to coal bed gas well mining filter sieve tube technical field, be specifically related to the special block-proof type filter sieve tube of a kind of coal bed gas well mining, it is characterized in that, the assembly that draws water, oil pipe, expansion joint assembly are from top to bottom connected successively with screen casing assembly, and PE pipe is positioned at oil pipe.Structure of the present invention is simple, and reliability is high, can effectively prevent screen casing from blocking, and guarantees the draining that coal bed gas well is continual and steady, prevents coal bed gas well from carrying out stopping well pump detection and workover because of coal dust blocking, thus effectively reduces costs, increase work efficiency.
Description
Technical field
The invention belongs to coal bed gas well mining filter sieve tube technical field, be specifically related to the special block-proof type filter sieve tube of a kind of coal bed gas well mining.
Background technology
The filter sieve tube that current coal bed gas extraction uses, as the water inlet entrance of suction pump, general is all be wrapped in by metal screen on screen casing to carry out draining, but once there is coal dust in water in mining process, coal dust is extremely easily pasted onto on filter screen, affect efficiency of drawing water, filter net jam can be caused time serious, surface pump takes out not water outlet, this situation is once occur simultaneously, needs stopping production to carry out inspection pump, not only expends certain human and material resources and time, also can bring certain reservoir damage to coal bed gas well, affect coal bed gas gas output per well.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide a kind of structure simple, the special block-proof type filter sieve tube of coal bed gas well mining of high efficient and reliable.
The technical solution adopted for the present invention to solve the technical problems is: the special block-proof type filter sieve tube of a kind of coal bed gas well mining, comprise the assembly 1 that draws water, oil pipe 2, PE pipe 3, expansion joint assembly 4 and screen casing assembly 5, it is characterized in that, draw water assembly 1, oil pipe 2, expansion joint assembly 4 is from top to bottom connected successively with screen casing assembly 5, and PE pipe 3 is positioned at oil pipe 2.
Particularly, described expansion joint assembly 4 is made up of tubing nipple 41, plastic telescopic pipe 43, spring 44 and capping 45, tubing nipple 41 and oil pipe 2 are with screwed connection, plastic telescopic pipe 43 is positioned at tubing nipple 41, the bottom of plastic telescopic pipe 43 is provided with a spring 44, and spring 44 is provided with a capping 45 below, and plastic telescopic pipe 43 top is provided with an annular box cupling 42, capping 45 and tubing nipple 41 lower end are with screwed connection, and the external diameter of annular box cupling 42 is greater than the internal diameter of capping 45.
Particularly, described screen casing assembly 5 is made up of rubber screen casing 51 and spring steel screen cloth 52, and there is joint at screen casing about 51 two ends respectively, and spring steel screen cloth 52 is wrapped in rubber screen casing 51 outer wall upper end, the unsettled placement in spring steel screen cloth 52 lower end.
Particularly, described oil pipe 2 is positioned at assembly 1 lower end and with it with screwed connection, PE pipe 3 upper end contacts with the seat bottom portion of the assembly 1 that draws water of drawing water, and external diameter is equal with oil pipe 2 internal diameter.
The invention has the beneficial effects as follows, structure is simple, and reliability is high, can effectively prevent screen casing from blocking, and guarantees the draining that coal bed gas well is continual and steady, prevents coal bed gas well from carrying out stopping well pump detection and workover because of coal dust blocking, thus effectively reduces costs, increase work efficiency.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the typical structure schematic diagram of the special block-proof type filter sieve tube of a kind of coal bed gas well of the present invention mining;
Fig. 2 is the structural representation of oil pipe and PE pipe in the present invention;
Fig. 3 is the structural representation of expansion joint assembly in the present invention;
Fig. 4 is the structural representation of screen casing assembly in the present invention.
In figure:
1, draw water assembly, and 2, oil pipe, 3, PE pipe, 4, expansion joint assembly, 5, screen casing assembly, 41, tubing nipple, 42, annular box cupling, 43, plastic telescopic pipe, 44, spring, 45, capping, 51, rubber screen casing, 52, spring steel screen cloth.
Detailed description of the invention
See Fig. 1 ~ Fig. 4, the special block-proof type filter sieve tube of a kind of coal bed gas well mining that the present invention proposes, comprise the assembly 1 that draws water, oil pipe 2, PE pipe 3, expansion joint assembly 4 and screen casing assembly 5, it is characterized in that, draw water assembly 1, oil pipe 2, expansion joint assembly 4 is from top to bottom connected successively with screen casing assembly 5, and PE pipe 3 is positioned at oil pipe 2.
Particularly, described expansion joint assembly 4 is made up of tubing nipple 41, plastic telescopic pipe 43, spring 44 and capping 45, tubing nipple 41 and oil pipe 2 are with screwed connection, plastic telescopic pipe 43 is positioned at tubing nipple 41, the bottom of plastic telescopic pipe 43 is provided with a spring 44, spring 44 is provided with a capping 45 below, plastic telescopic pipe 43 top is provided with an annular box cupling 42, capping 45 and tubing nipple 41 lower end are with screwed connection, for supporting spring 44 on it and plastic telescopic pipe 43, the external diameter of annular box cupling 42 is greater than the internal diameter of capping 45.
Particularly, described screen casing assembly 5 is made up of rubber screen casing 51 and spring steel screen cloth 52, and there is joint at screen casing about 51 two ends respectively, and spring steel screen cloth 52 is wrapped in rubber screen casing 51 outer wall upper end, the unsettled placement in spring steel screen cloth 52 lower end, spring steel screen cloth 52 is 30 object screen clothes.
Particularly, described oil pipe 2 is positioned at assembly 1 lower end and with it with screwed connection, PE pipe 3 upper end contacts with the seat bottom portion of the assembly 1 that draws water of drawing water, and external diameter is equal with oil pipe 2 internal diameter.
De-plugging principle: after coal bed gas well mining a period of time, when occurring that screen cloth blocking causes pump to take out the situation of not water outlet, PE pipe 3 under it and plastic telescopic pipe 43 is extruded successively by the plunger of transferring the assembly 1 that draws water, after plastic telescopic pipe 43 drops to certain distance, on carry plunger and make rubber screen casing 51 under it and spring steel screen cloth 52 vertical tremor repeatedly, by crimp repeatedly and the vibrations of the aperture in rubber screen casing 51 and spring steel screen cloth 52, coal dust in aperture on screen casing 51 and steel screen cloth 52 is extruded, finally reaches the effect of de-plugging.
Claims (4)
1. the special block-proof type filter sieve tube of coal bed gas well mining, comprise the assembly that draws water (1), oil pipe (2), PE pipe (3), expansion joint assembly (4) and screen casing assembly (5), it is characterized in that, draw water assembly (1), oil pipe (2), expansion joint assembly (4) is from top to bottom connected successively with screen casing assembly (5), and PE pipe (3) is positioned at oil pipe (2).
2. the special block-proof type filter sieve tube of a kind of coal bed gas well mining according to claim 1, it is characterized in that, described expansion joint assembly (4) is by tubing nipple (41), plastic telescopic pipe (43), spring (44) and capping (45) composition, tubing nipple (41) and oil pipe (2) are with screwed connection, plastic telescopic pipe (43) is positioned at tubing nipple (41), the bottom of plastic telescopic pipe (43) is provided with a spring (44), spring (44) is provided with a capping (45) below, plastic telescopic pipe (43) top is provided with an annular box cupling (42), capping (45) and tubing nipple (41) lower end are with screwed connection, the external diameter of annular box cupling (42) is greater than the internal diameter of capping (45).
3. the special block-proof type filter sieve tube of a kind of coal bed gas well mining according to claim 1 and 2, it is characterized in that, described screen casing assembly (5) is made up of rubber screen casing (51) and spring steel screen cloth (52), screen casing (51) has joint in two ends up and down respectively, spring steel screen cloth (52) is wrapped in rubber screen casing (51) outer wall upper end, the unsettled placement in spring steel screen cloth (52) lower end.
4. the special block-proof type filter sieve tube of a kind of coal bed gas well mining according to claim 1 and 2, it is characterized in that, described oil pipe (2) is positioned at the assembly that draws water (1) lower end and with it with screwed connection, PE manages (3) upper end and contacts with the seat bottom portion of the assembly that draws water (1), and external diameter is equal with oil pipe (2) internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410080460.XA CN103821483B (en) | 2014-03-06 | 2014-03-06 | The special block-proof type filter sieve tube of a kind of coal bed gas well mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410080460.XA CN103821483B (en) | 2014-03-06 | 2014-03-06 | The special block-proof type filter sieve tube of a kind of coal bed gas well mining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103821483A CN103821483A (en) | 2014-05-28 |
| CN103821483B true CN103821483B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410080460.XA Active CN103821483B (en) | 2014-03-06 | 2014-03-06 | The special block-proof type filter sieve tube of a kind of coal bed gas well mining |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108979599A (en) * | 2018-09-20 | 2018-12-11 | 克拉玛依胜利高原机械有限公司 | A kind of slot pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2370156Y (en) * | 1999-03-15 | 2000-03-22 | 李华林 | Under well filter |
| CN101220737A (en) * | 2008-01-23 | 2008-07-16 | 毛国武 | Sand filtering tube device of vibrating net barrel |
| RU2402675C2 (en) * | 2008-11-27 | 2010-10-27 | Владимир Александрович Чигряй | Hydro-dynamic filter |
| CN202954792U (en) * | 2012-10-31 | 2013-05-29 | 北京九尊能源技术股份有限公司 | Anti-blocking filtering screen pipe assembly of coal-bed gas well |
| CN103541695A (en) * | 2013-10-24 | 2014-01-29 | 西安陆海油田设备有限公司 | Dynamic self-cleaning screen pipe |
| CN203808948U (en) * | 2014-03-06 | 2014-09-03 | 贵州盘江煤层气开发利用有限责任公司 | Anti-blocking filter screen tube special for drainage of coal-bed gas wells |
-
2014
- 2014-03-06 CN CN201410080460.XA patent/CN103821483B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2370156Y (en) * | 1999-03-15 | 2000-03-22 | 李华林 | Under well filter |
| CN101220737A (en) * | 2008-01-23 | 2008-07-16 | 毛国武 | Sand filtering tube device of vibrating net barrel |
| RU2402675C2 (en) * | 2008-11-27 | 2010-10-27 | Владимир Александрович Чигряй | Hydro-dynamic filter |
| CN202954792U (en) * | 2012-10-31 | 2013-05-29 | 北京九尊能源技术股份有限公司 | Anti-blocking filtering screen pipe assembly of coal-bed gas well |
| CN103541695A (en) * | 2013-10-24 | 2014-01-29 | 西安陆海油田设备有限公司 | Dynamic self-cleaning screen pipe |
| CN203808948U (en) * | 2014-03-06 | 2014-09-03 | 贵州盘江煤层气开发利用有限责任公司 | Anti-blocking filter screen tube special for drainage of coal-bed gas wells |
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| CN103821483A (en) | 2014-05-28 |
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Address after: Lin Cheng Xi Lu Lake District 550081 Guizhou city of Guiyang province No. 95 seven floor Applicant after: Guizhou Pan Jiang cbm development utilizes Co., Ltd Address before: 550081 Guizhou Province, Guiyang City Lake District century Jin Yuan shopping center business building D block 15 layer Applicant before: Guizhou Pan Jiang cbm development utilizes Co., Ltd |
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