CN103821483A - Special anti-blocking type filter sieve tube for drainage of coal-bed gas well - Google Patents
Special anti-blocking type filter sieve tube for drainage of coal-bed gas well Download PDFInfo
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- CN103821483A CN103821483A CN201410080460.XA CN201410080460A CN103821483A CN 103821483 A CN103821483 A CN 103821483A CN 201410080460 A CN201410080460 A CN 201410080460A CN 103821483 A CN103821483 A CN 103821483A
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Abstract
The invention belongs to the technical field of filter sieve tubes for drainage of coal-bed gas wells, and specifically relates to a special anti-blocking type filter sieve tube for the drainage of a coal-bed gas well. The filter sieve tube is characterized in that a water pumping assembly, an oil tube, a telescopic joint assembly and a sieve tube assembly are sequentially connected from top to bottom; a PE (polyethylene) tube is positioned in the oil tube. The filter sieve tube is simple in structure and high in reliability, the sieve tube can be effectively prevented from being blocked, water can be continuously and stably drained from the coal-bed gas well, and well-stop pump maintenance due to blocking of the coal-bed gas well by pulverized coal is prevented, so that the cost is effectively reduced, and the working efficiency is improved.
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, all generally that metal screen is wrapped in and on screen casing, carries out draining, once but there is coal dust in water in mining process, coal dust extremely easily sticks on filter screen, affect the efficiency of drawing water, when serious, can cause filter net jam, surface pump is taken out not water outlet, once simultaneously this situation occurs, need to stop production and examine pump, not only expend 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 simple in structure, 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 and screen casing assembly 5 is from top to bottom connected successively, 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 tops are provided with an annular box cupling 42, capping 45 is with tubing nipple 41 lower ends 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 screen casing has respectively joint in two ends Shang Xia 51, and spring steel screen cloth 52 is wrapped in rubber screen casing 51 outer wall upper ends, the 52 unsettled placements in lower end of spring steel screen cloth.
Particularly, described oil pipe 2 be positioned at draw water assembly 1 lower end and with it with screwed connection, the valve seat bottom that PE manages 3 upper ends and the assembly 1 that draws water contacts, and external diameter equates with oil pipe 2 internal diameters.
The invention has the beneficial effects as follows, simple in structure, reliability is high, can effectively prevent that screen casing from stopping up, and guarantees the draining that coal bed gas well is continual and steady, prevents that coal bed gas well from stopping well pump detection and workover because coal dust stops up, thereby effectively reduces costs, and increases 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 mining of the present invention;
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, the assembly that draws water, 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.
The specific embodiment
Referring to 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 and screen casing assembly 5 is from top to bottom connected successively, 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 tops are provided with an annular box cupling 42, capping 45 and tubing nipple 41 lower ends are with screwed connection, for supporting spring 44 and the plastic telescopic pipe 43 on it, 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 screen casing has respectively joint in two ends Shang Xia 51, and spring steel screen cloth 52 is wrapped in rubber screen casing 51 outer wall upper ends, the 52 unsettled placements in lower end of spring steel screen cloth, spring steel screen cloth 52 is 30 object screen clothes.
Particularly, described oil pipe 2 be positioned at draw water assembly 1 lower end and with it with screwed connection, the valve seat bottom that PE manages 3 upper ends and the assembly 1 that draws water contacts, and external diameter equates with oil pipe 2 internal diameters.
De-plugging principle: after coal bed gas well mining a period of time, in the time occurring that screen cloth obstruction causes pump to take out the situation of not water outlet, push successively PE pipe 3 and the plastic telescopic pipe 43 under it by transferring the plunger of the assembly 1 that draws water, when plastic telescopic pipe 43 drops to after certain distance, on carry plunger and make rubber screen casing 51 and spring steel screen cloth 52 vertical tremor repeatedly under it, 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 reached the effect of de-plugging.
Claims (4)
1. the special block-proof type filter sieve tube of coal bed gas well mining, comprise that the assembly that draws water (1), oil pipe (2), PE manage (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) and screen casing assembly (5) is from top to bottom connected successively, 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), there is respectively joint at the upper and lower two ends of screen casing (51), 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) be positioned at the assembly that draws water (1) lower end and with it with screwed connection, PE pipe (3) upper end contacts with the valve seat bottom of the assembly that draws water (1), and external diameter equates 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 true CN103821483A (en) | 2014-05-28 |
| CN103821483B CN103821483B (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103821483B (en) | 2016-04-27 |
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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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