CN103912223A - Swivel bearing type drag reduction tool - Google Patents
Swivel bearing type drag reduction tool Download PDFInfo
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- CN103912223A CN103912223A CN201410155649.0A CN201410155649A CN103912223A CN 103912223 A CN103912223 A CN 103912223A CN 201410155649 A CN201410155649 A CN 201410155649A CN 103912223 A CN103912223 A CN 103912223A
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- drag reduction
- sleeve
- friction
- supporting positive
- bearing type
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Abstract
A swivel bearing type drag reduction tool comprises a drag reduction tool body, a bearing type drag reduction mechanism and auxiliary fixing pieces. The drag reduction tool body is in a tubular structure, and two ends of the drag reduction tool body are connected with a drill rod respectively. The bearing type drag reduction mechanism comprises a drag reduction spacing sleeve, a spiral centralizing sleeve and an internal frictional lining. The auxiliary fixing pieces include a fixing sleeve and a plurality of fixing pins. The internal frictional lining is fixed on the drag reduction tool body via the fixing pins, the fixing sleeve is fixed on the drag reduction tool body below the internal frictional lining, the spiral centralizing sleeve is clamped between the fixing sleeve and the internal frictional lining, and the drag reduction spacing sleeve is arranged at the lower end of the spiral centralizing sleeve and contacted with the fixing sleeve. By adopting the rotary bearing type drag reduction structure, an alloy is inlaid or a wear-resisting belt is welded on the surface of the spiral centralizing sleeve, frictional resistance to the drill rod from a well wall is lowered greatly, a drilling acceleration effect is achieved, and the swivel bearing type drag reduction tool has the advantages of reasonable structure, convenience in use and long service life of the drill rod.
Description
Technical field
The present invention relates to drilling tool technical field, be specifically related to a kind of swivel bearing formula friction reducer.
Background technology
In oil and gas well drilling operation, particularly in horizontal well, extended reach directional well drilling well, the well section of horizontal segment, large displacement is more and more longer, and along with the growth of horizontal movement, drilling tool frictional resistance will sharply increase, and after frictional resistance is greater than drilling tool yield pressure, the pressure of the drill cannot be applied on drill bit, make drillng operation be difficult to proceed, what this gave drillng operation normally brings adverse influence.
Oil drilling develops to horizontal well gradually from original directional well at present, and drilling well (orientation accounts for the 1/4-1/3 of whole drilling well) except orientation, all substantially adopt helicoid hydraulic motor to add dial rotation and carry out compound drilling, greatly improve the efficiency of drilling well, shorten drilling period, and in drilling process, will there is the friction between drilling rod and the borehole wall, excessive frictional resistance is comparatively serious to drill pipe wear.
Summary of the invention
The invention provides a kind of swivel bearing formula friction reducer, cause the problem of drill pipe wear to solve friction between drilling rod and the borehole wall that prior art exists.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of swivel bearing formula friction reducer, comprise friction reducer main body, bearing-type drag reduction mechanism and auxiliary fixing member composition, friction reducer main body is tubular structure, two ends are connected with drilling rod respectively, bearing-type drag reduction mechanism comprises drag reduction spacer, spiral supporting positive cover and interior friction bushings, auxiliary fixing member comprises fixed cover and fixing pin, interior friction bushings is fixed in friction reducer main body by some fixing pins, fixed cover is fixed in the friction reducer main body below interior friction bushings, spiral supporting positive cover is stuck between fixed cover and interior friction bushings, drag reduction spacer is arranged on spiral supporting positive cover lower end and contacts with fixed cover.
Above-mentioned spiral supporting positive cover external surface tungsten carbide button or welding wear-resistant strip.
Above-mentioned interior friction bushings adopts wear resistant corrosion resistant and can self-lubricating material make.
In drilling process, instrument of the present invention is installed one at a certain distance at drilling rod, the spiral supporting positive cover of bearing-type drag reduction mechanism contact borehole wall when work, and spiral supporting positive cover is inner by mud lubrication, between spiral supporting positive cover and interior friction bushings, belong to bearing-type sliding friction, interior friction bushings is a kind of wear-resisting, corrosion-resistant, special material that can self-lubricating, frictional resistance is very little, is not acted upon by temperature changes.Because spiral supporting positive cover has contacted the borehole wall, avoided drilling rod directly to contact with the borehole wall, and spiral supporting positive cover and interior friction bushings belong to bearing rotary, frictional resistance is very little, thereby reaches the frictional resistance that reduces drilling process drilling rod, and reaches the effect that drilling well is raised the efficiency.
Apparatus of the present invention adopt swivel bearing formula drag reduction structure, spiral supporting positive cover surface inserting alloy or welding wear-resistant strip, greatly reduce drilling rod and be subject to the frictional resistance of the borehole wall to its generation, and reach the effect of drilling speed, there is rational in infrastructure, easy to use, raising drilling life of drill pipe.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of apparatus of the present invention in specific embodiment 1;
Fig. 2 is the structural representation of apparatus of the present invention in specific embodiment 2.
1 friction reducer main body, 2 fixed covers, 3 drag reduction spacers, 4 spiral supporting positive covers, 5 interior friction bushings, 6 fixing pins, 7 wear-resistant strips, 8 carbide alloy in figure.
The specific embodiment
Example 1
As shown in Figure 1, a kind of swivel bearing formula friction reducer, comprise friction reducer main body 1, bearing-type drag reduction mechanism and auxiliary fixing member composition, friction reducer main body 1 is tubular structure, two ends are connected with drilling rod respectively, bearing-type drag reduction mechanism comprises drag reduction spacer 3, spiral supporting positive cover 4 and interior friction bushings 5, auxiliary fixing member comprises fixed cover 2 and fixing pin 6, interior friction bushings 5 is fixed in friction reducer main body 1 by some fixing pins 6, fixed cover 2 is fixed in interior friction bushings 5 friction reducer main body 1 below, spiral supporting positive cover 4 is stuck between fixed cover 2 and interior friction bushings 5, drag reduction spacer 3 is arranged on spiral supporting positive cover 4 lower ends and contacts with fixed cover 2, spiral supporting positive cover 4 external surface welding wear-resistant strips 7, interior friction bushings 5 adopts wear resistant corrosion resistant and can self-lubricating material make.
In drilling process, instrument of the present invention is installed one at a certain distance at drilling rod, when work, the spiral supporting positive cover 4 of bearing-type drag reduction mechanism contacts the borehole wall, and spiral supporting positive cover 4 is inner by mud lubrication, between spiral supporting positive cover 4 and interior friction bushings 5, belong to bearing-type sliding friction, interior friction bushings 5 is a kind of wear-resisting, corrosion-resistant, special material that can self-lubricating, frictional resistance is very little, is not acted upon by temperature changes.Because spiral supporting positive cover 4 has contacted the borehole wall, avoided drilling rod directly to contact with the borehole wall, and spiral supporting positive cover 4 belongs to bearing rotary with interior friction bushings 5, frictional resistance is very little, thereby reach the frictional resistance that reduces drilling process drilling rod, and reach the effect that drilling well is raised the efficiency.
Example 2
As shown in Figure 2, a kind of swivel bearing formula friction reducer, comprise friction reducer main body 1, bearing-type drag reduction mechanism and auxiliary fixing member composition, friction reducer main body 1 is tubular structure, two ends are connected with drilling rod respectively, bearing-type drag reduction mechanism comprises drag reduction spacer 3, spiral supporting positive cover 4 and interior friction bushings 5, auxiliary fixing member comprises fixed cover 2 and fixing pin 6, interior friction bushings 5 is fixed in friction reducer main body 1 by some fixing pins 6, fixed cover 2 is fixed in interior friction bushings 5 friction reducer main body 1 below, spiral supporting positive cover 4 is stuck between fixed cover 2 and interior friction bushings 5, drag reduction spacer 3 is arranged on spiral supporting positive cover 4 lower ends and contacts with fixed cover 2, spiral supporting positive cover 4 external surface tungsten carbide buttons 8, interior friction bushings 5 adopts wear resistant corrosion resistant and can self-lubricating material make.
In drilling process, instrument of the present invention is installed one at a certain distance at drilling rod, when work, the spiral supporting positive cover 4 of bearing-type drag reduction mechanism contacts the borehole wall, and spiral supporting positive cover 4 is inner by mud lubrication, between spiral supporting positive cover 4 and interior friction bushings 5, belong to bearing-type sliding friction, interior friction bushings 5 is a kind of wear-resisting, corrosion-resistant, special material that can self-lubricating, frictional resistance is very little, is not acted upon by temperature changes.Because spiral supporting positive cover 4 has contacted the borehole wall, avoided drilling rod directly to contact with the borehole wall, and spiral supporting positive cover 4 belongs to bearing rotary with interior friction bushings 5, frictional resistance is very little, thereby reach the frictional resistance that reduces drilling process drilling rod, and reach the effect that drilling well is raised the efficiency.
Claims (3)
1. a swivel bearing formula friction reducer, it is characterized in that comprising friction reducer main body, bearing-type drag reduction mechanism and auxiliary fixing member composition, friction reducer main body is tubular structure, two ends are connected with drilling rod respectively, bearing-type drag reduction mechanism comprises drag reduction spacer, spiral supporting positive cover and interior friction bushings, auxiliary fixing member comprises fixed cover and fixing pin, interior friction bushings is fixed in friction reducer main body by some fixing pins, fixed cover is fixed in the friction reducer main body below interior friction bushings, spiral supporting positive cover is stuck between fixed cover and interior friction bushings, drag reduction spacer is arranged on spiral supporting positive cover lower end and contacts with fixed cover.
2. swivel bearing formula friction reducer according to claim 1, is characterized in that spiral supporting positive cover external surface tungsten carbide button or welding wear-resistant strip.
3. swivel bearing formula friction reducer according to claim 1, is characterized in that interior friction bushings adopts wear resistant corrosion resistant and can self-lubricating material make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155649.0A CN103912223A (en) | 2014-04-12 | 2014-04-12 | Swivel bearing type drag reduction tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155649.0A CN103912223A (en) | 2014-04-12 | 2014-04-12 | Swivel bearing type drag reduction tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103912223A true CN103912223A (en) | 2014-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410155649.0A Pending CN103912223A (en) | 2014-04-12 | 2014-04-12 | Swivel bearing type drag reduction tool |
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| Country | Link |
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| CN (1) | CN103912223A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727760A (en) * | 2015-03-20 | 2015-06-24 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Spherical friction and resistance reduction stabilizer |
| CN105863522A (en) * | 2015-01-19 | 2016-08-17 | 深圳市百勤石油技术有限公司 | Self-lubricating sleeve type spiral centralizer |
| CN107905740A (en) * | 2017-09-25 | 2018-04-13 | 西南石油大学 | A kind of Deep Water Drilling Riser and drilling rod abrasionproof anti-attrition device |
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| CN2653114Y (en) * | 2003-09-16 | 2004-11-03 | 大庆市华祺机械设备有限公司 | Hoop joint type oil pumping rod centering guide |
| CN201053297Y (en) * | 2007-07-05 | 2008-04-30 | 深圳远东石油工具有限公司 | Non-rotating drag reduction low-torsion drill rod protector |
| CN201246114Y (en) * | 2008-09-11 | 2009-05-27 | 大港油田集团有限责任公司 | Anti-friction and twist well drilling collar |
| CN102094584A (en) * | 2009-12-14 | 2011-06-15 | 牛子久 | Double-acting type drill stem stabilizing device |
| CN202810691U (en) * | 2012-08-07 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Antifriction resistance reducing short connection for well drilling |
| US20130319684A1 (en) * | 2012-05-31 | 2013-12-05 | Tesco Corporation | Friction reducing stabilizer |
| CN203769672U (en) * | 2014-04-12 | 2014-08-13 | 山东陆海石油装备有限公司 | Swivel bearing type drag reduction tool |
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2014
- 2014-04-12 CN CN201410155649.0A patent/CN103912223A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2653114Y (en) * | 2003-09-16 | 2004-11-03 | 大庆市华祺机械设备有限公司 | Hoop joint type oil pumping rod centering guide |
| CN201053297Y (en) * | 2007-07-05 | 2008-04-30 | 深圳远东石油工具有限公司 | Non-rotating drag reduction low-torsion drill rod protector |
| CN201246114Y (en) * | 2008-09-11 | 2009-05-27 | 大港油田集团有限责任公司 | Anti-friction and twist well drilling collar |
| CN102094584A (en) * | 2009-12-14 | 2011-06-15 | 牛子久 | Double-acting type drill stem stabilizing device |
| US20130319684A1 (en) * | 2012-05-31 | 2013-12-05 | Tesco Corporation | Friction reducing stabilizer |
| CN202810691U (en) * | 2012-08-07 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Antifriction resistance reducing short connection for well drilling |
| CN203769672U (en) * | 2014-04-12 | 2014-08-13 | 山东陆海石油装备有限公司 | Swivel bearing type drag reduction tool |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863522A (en) * | 2015-01-19 | 2016-08-17 | 深圳市百勤石油技术有限公司 | Self-lubricating sleeve type spiral centralizer |
| CN105863522B (en) * | 2015-01-19 | 2018-02-23 | 深圳市百勤石油技术有限公司 | A kind of self-lubricating bush formula spiral centering device |
| CN104727760A (en) * | 2015-03-20 | 2015-06-24 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Spherical friction and resistance reduction stabilizer |
| CN107905740A (en) * | 2017-09-25 | 2018-04-13 | 西南石油大学 | A kind of Deep Water Drilling Riser and drilling rod abrasionproof anti-attrition device |
| CN107905740B (en) * | 2017-09-25 | 2019-10-01 | 西南石油大学 | A kind of Deep Water Drilling Riser and drilling rod abrasionproof anti-attrition device |
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| CB02 | Change of applicant information |
Address after: 250000 North Road, middle of Beichen Road, Lingxian County Economic Development Zone, Dezhou, Shandong Applicant after: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO., LTD. Address before: 253000 Lingxian County Economic Development Zone, Dezhou, Beichen Road, the middle of the road north of the city of Shandong Applicant before: Shandong Luhai Petroleum Equipment Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SHANDONG LUHAI PETROLEUM EQUIPMENT CO., LTD. TO: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO., LTD. Free format text: CORRECT: ADDRESS; FROM: 253000 DEZHOU, SHANDONG PROVINCE TO: 250000 DEZHOU, SHANDONG PROVINCE |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140709 |
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| RJ01 | Rejection of invention patent application after publication |