CN102777150A - Gapless self-adapting scraper assembly - Google Patents
Gapless self-adapting scraper assembly Download PDFInfo
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- CN102777150A CN102777150A CN2012102228973A CN201210222897A CN102777150A CN 102777150 A CN102777150 A CN 102777150A CN 2012102228973 A CN2012102228973 A CN 2012102228973A CN 201210222897 A CN201210222897 A CN 201210222897A CN 102777150 A CN102777150 A CN 102777150A
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- connecting rod
- scraper
- mandrel
- lower link
- scraper assembly
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Abstract
The invention relates to a gapless self-adapting scraper assembly. The problems that existing scrapers cannot adapt to the diameter of a pump barrel and a pump is jammed easily are solved. The scraper assembly is characterized in that an upper scraper (2) is arranged outside an upper connecting rod (1), a lower scraper (4) is arranged outside a middle connecting rod (5), the lower portion of a lower connecting rod (7) is connected with a plunger (10), a leather cup (8) is arranged outside the lower connecting rod (7), a plurality of flow channels (9) are arranged on the side wall of the leather cup (8), a groove is arranged on the outer periphery of an inner mandrel (11) of the scraper, a centering supporting body (13) is embedded in the groove, a scrapping sheet (14) is fixed on the side surface of the centering supporting body (13) and a spring (15) is arranged between the centering supporting body (13) and the mandrel (11) radially. The gapless self-adapting scraper assembly can scrap completely, no gap exists, the scraper can adapt to pump barrels with different diameters, scraped dirt can flow out of a well along with well liquid and pumps cannot be jammed.
Description
Technical field
The present invention relates to the field, oil field, a kind ofly specifically be used for the no gap self adaptation scraper assembly that the ternary compound oil drive sucker rod pumping is used.
Background technology
Rod-pumped well is behind long-play; The fouls such as iron oxide that produced after meeting residual water clod, hard wax, various saline crystallization or deposit, the sleeve pipe corrosion on the sleeve pipe; Especially the compound rod pumped well of ternary; More be prone to fouling on the pump barrel inwall, need remove with scraper, so that unblocked ground of oil well pump lower going-into-well is celestial.Present scraper is the nylon scraper mostly, because the circumferential unbalance stress of scraper, the circumferential scraping of pump barrel is inhomogeneous, can't self adaptation pump barrel diameter, thereby and the solid free settling that scrapes off to the generation that causes holddown between plunger and the pump barrel.
Summary of the invention
Can't self adaptation pump barrel diameter and be prone to cause the deficiency of holddown in order to overcome existing scraper; The present invention provides a kind of no gap self adaptation scraper assembly; This no gap self adaptation scraper assembly scraping does not thoroughly have the gap, can adapt to the pump barrel of different-diameter; Scraping the dirt that chips away can go out outside the well with the well flow, avoids holddown.
Technical scheme of the present invention is: a kind of no gap self adaptation scraper assembly; Comprise connecting rod, scraper, joint; Described connecting rod comprises connecting rod, intermediate connecting rod, lower link; The described connecting rod outside of going up is equipped with scraper, and the intermediate connecting rod outside is equipped with down scraper, and the lower link bottom connects plunger;
Outside, described lower link lower end is provided with the conical surface, and the lower link outside is equipped with leather cup, and described leather cup sidewall is provided with several runners;
Described scraper inside is mandrel, and the excircle of said mandrel is provided with groove, and groove is built-in with sets upright supporter, and the side of setting upright supporter is fixed with to scrape and chips, and described setting upright radially is provided with spring between supporter and the mandrel.
Described joint comprises top connection, transition joint, and described top connection two ends connect connecting rod, intermediate connecting rod respectively, and described transition joint two ends connect intermediate connecting rod, lower link respectively.
Described scrape to chip be circular arc, quantity is 3, along the circumferential direction is uniformly distributed with and vertical direction staggers each other.
The described arc chord angle of chipping scraped is greater than 120o.
Described mandrel lower thread connects pressure cap, and pressure cap top compresses sets upright supporter.
The present invention has following beneficial effect: owing to take such scheme; Scraping chips is fixed on the mandrel by setting upright supporter; And set upright between supporter and the mandrel and be provided with spring; Elasticity through spring can make the scraping sheet along with the diameter of pump barrel is stretched, and therefore the pump barrel diameter is had adaptation function; The lower link outside is equipped with leather cup, and leather cup is provided with fluid passage, and leather cup can be caught the dirt of chipping and scraping off by scraping; And when plunger motion; Dirt can go out outside the well along with the well flow, effectively prevents to prolong pump detection period because fouling causes the generation of holddown; This scraper assembly structure is simple, dependable performance, improves the overall economic efficiency of ternary composite driving oil well greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of scraper;
Fig. 3 is the vertical view of scraper.
1-goes up connecting rod, the last scraper of 2-, 3-top connection, scraper under the 4-, connecting rod among the 5-, 6-transition joint among the figure; The 7-lower link, 8-leather cup, 9-runner, 10-plunger, 11-mandrel, 12-limited block; 13-sets upright supporter, and 14-scrapes and chips, 15-spring, 16-pressure cap, 17-pump barrel.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further:
Extremely shown in Figure 3 by Fig. 1; A kind of no gap self adaptation scraper assembly comprises connecting rod, scraper, joint, and described connecting rod comprises connecting rod 1, intermediate connecting rod 5, lower link 7; Described joint comprises top connection 3, transition joint 6, and described scraper comprises scraper 2, following scraper 4.Described top connection 3 two ends connect connecting rod 1, intermediate connecting rod 5 respectively; Described transition joint 6 two ends connect intermediate connecting rod 5, lower link 7 respectively; Described connecting rod 1 top of going up connects sucker rod, and last connecting rod 1 outside is equipped with scraper 2, and intermediate connecting rod 5 outsides are equipped with down scraper 4; Last scraper 2 can move between the lower convex platform of last connecting rod 1 and top connection 3, and following scraper 4 can move between top connection 3 and transition joint 6.Lower link 7 lower thread connect plunger 10.Described lower link 7 lower outer diameter are provided with the conical surface, and lower link 7 outsides are equipped with leather cup 8, and leather cup 8 can move up and down in lower link 7 outsides, and are upwards spacing by transition joint 8, can be stuck on the conical surface downwards; Described leather cup 8 sidewalls are provided with several runners 9.
Described scraper comprises mandrel 11, limited block 12, set upright supporter 13, scrape chip 14, spring 15, pressure cap 16, pump barrel 17, scraper inside is mandrel 11, mandrel 11 places sucker rod outside; The excircle of said mandrel 11 is provided with groove, and groove is built-in with sets upright supporter 13, and the lateral surface of setting upright supporter 13 is fixed with to scrape chips 14; Set upright between supporter 13 and the mandrel 11 and radially be provided with spring 15, set upright supporter 13 medial surfaces and be provided with pit, also there is pit on mandrel corresponding with it 11 surfaces; Pit is built-in with spring 15; Set upright supporter 13 through the resilient support of spring, make that scraping chips 14 is close on pump barrel 17 inwalls, when moving up and down the dirt on pump barrel 17 inwalls is scraped off along with scraper; And scraping chips 14 can stretch along with the variation of pump barrel 17 internal diameters, and compliance is strong.Described mandrel 11 lower thread connect pressure cap 16, and pressure cap 16 top radial compactions are set upright supporter 13, avoid setting upright supporter 13 and drop out, and the top of holding up lower support 13 is radially by being circular limited block 12 location.Described scrape to chip 14 be circular arc, quantity is 3, along the circumferential direction is uniformly distributed with and vertical direction staggers each other, promptly scrapes and chips 14 horizontal directions not at grade for 3.Described 14 the arc chord angle of chipping of scraping is greater than 120o, and such 3 scopes of scraping the institute's scraping of chipping are overlapped, avoided omission.
When oil pumper moved, during upstroke, sucker rod was driving whole device for scraping and in pump barrel, is moving, and scraped 14 dirts that effectively strike off on the pump barrel inwall of chipping, and this moment, leather cup 8 was sitting on lower link 7 inclined-planes, and dirt is deposited in the leather cup 8 gradually; During down stroke, leather cup 8 is separated from the inclined-plane of lower link 7, between leather cup 8 and the lower link 7 certain clearance is arranged, and borehole fluid flows through, and dirt is along with borehole fluid flows out outside the well.
Claims (5)
1. no gap self adaptation scraper assembly; Comprise connecting rod, scraper, joint; It is characterized in that: described connecting rod comprises connecting rod (1), intermediate connecting rod (5), lower link (7); Described connecting rod (1) outside of going up is equipped with scraper (2), and intermediate connecting rod (5) outside is equipped with down scraper (4), and lower link (7) bottom connects plunger (10);
Described lower link (7) outside, lower end is provided with the conical surface, and lower link (7) outside is equipped with leather cup (8), and described leather cup (8) sidewall is provided with several runners (9);
Described scraper inside is mandrel (11); The excircle of said mandrel (11) is provided with groove; Groove is built-in with sets upright supporter (13); The side of setting upright supporter (13) is fixed with scrapes chip (14), and described setting upright between supporter (13) and the mandrel (11) radially is provided with spring (15).
2. no gap according to claim 1 self adaptation scraper assembly; It is characterized in that: described joint comprises top connection (3), transition joint (6); Described top connection (3) two ends connect connecting rod (1), intermediate connecting rod (5) respectively, and described transition joint (6) two ends connect intermediate connecting rod (5), lower link (7) respectively.
3. no gap according to claim 1 and 2 self adaptation scraper assembly is characterized in that: described scrape chip (14) are circular arc, and quantity is 3, along the circumferential direction are uniformly distributed with and vertical direction staggers each other.
4. no gap according to claim 3 self adaptation scraper assembly is characterized in that: the described arc chord angle of scraping chip (14) is greater than 120o.
5. no gap according to claim 4 self adaptation scraper assembly is characterized in that: described mandrel (11) lower thread connects pressure cap (16), and pressure cap (16) top compresses sets upright supporter (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210222897.3A CN102777150B (en) | 2012-07-02 | 2012-07-02 | Gapless self adaptation scraper assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210222897.3A CN102777150B (en) | 2012-07-02 | 2012-07-02 | Gapless self adaptation scraper assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102777150A true CN102777150A (en) | 2012-11-14 |
| CN102777150B CN102777150B (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210222897.3A Expired - Fee Related CN102777150B (en) | 2012-07-02 | 2012-07-02 | Gapless self adaptation scraper assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672915A (en) * | 2016-04-01 | 2016-06-15 | 中国海洋石油总公司 | Outer-diameter-variable cutting bed removing tool |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4648447A (en) * | 1985-09-11 | 1987-03-10 | Bowen Tools, Inc. | Casing scraper |
| CN86207314U (en) * | 1986-09-28 | 1987-10-31 | 齐齐哈尔第一机床厂 | Special oil drawing bar with retainer and wax scraper |
| US4798246A (en) * | 1987-04-22 | 1989-01-17 | Best David M | Pipe scraper |
| US5452760A (en) * | 1994-09-19 | 1995-09-26 | Enterra Patco Oilfield Products Limited | Well pump tubing scrapers |
| CN2813878Y (en) * | 2005-08-03 | 2006-09-06 | 李国祯 | Producing well pig |
| CN201428431Y (en) * | 2009-06-15 | 2010-03-24 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Tube inside wall scraping device |
| CN201428430Y (en) * | 2009-06-10 | 2010-03-24 | 东营市铁人石油机具有限公司 | Novel combined casing scraper |
| CN201921865U (en) * | 2010-12-31 | 2011-08-10 | 中国石油天然气集团公司 | Jet flow tube cleaner applicable to large-aperture tubes |
| CN102465685A (en) * | 2010-11-16 | 2012-05-23 | 王志荣 | Oil pipeline wax scraper |
| CN202611666U (en) * | 2012-07-02 | 2012-12-19 | 大庆大华宏业石油工程技术有限公司 | Zero-clearance adaptive scraper assembly |
-
2012
- 2012-07-02 CN CN201210222897.3A patent/CN102777150B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4648447A (en) * | 1985-09-11 | 1987-03-10 | Bowen Tools, Inc. | Casing scraper |
| CN86207314U (en) * | 1986-09-28 | 1987-10-31 | 齐齐哈尔第一机床厂 | Special oil drawing bar with retainer and wax scraper |
| US4798246A (en) * | 1987-04-22 | 1989-01-17 | Best David M | Pipe scraper |
| US5452760A (en) * | 1994-09-19 | 1995-09-26 | Enterra Patco Oilfield Products Limited | Well pump tubing scrapers |
| CN2813878Y (en) * | 2005-08-03 | 2006-09-06 | 李国祯 | Producing well pig |
| CN201428430Y (en) * | 2009-06-10 | 2010-03-24 | 东营市铁人石油机具有限公司 | Novel combined casing scraper |
| CN201428431Y (en) * | 2009-06-15 | 2010-03-24 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Tube inside wall scraping device |
| CN102465685A (en) * | 2010-11-16 | 2012-05-23 | 王志荣 | Oil pipeline wax scraper |
| CN201921865U (en) * | 2010-12-31 | 2011-08-10 | 中国石油天然气集团公司 | Jet flow tube cleaner applicable to large-aperture tubes |
| CN202611666U (en) * | 2012-07-02 | 2012-12-19 | 大庆大华宏业石油工程技术有限公司 | Zero-clearance adaptive scraper assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672915A (en) * | 2016-04-01 | 2016-06-15 | 中国海洋石油总公司 | Outer-diameter-variable cutting bed removing tool |
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| Publication number | Publication date |
|---|---|
| CN102777150B (en) | 2015-10-07 |
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