CN203769672U - Swivel bearing type drag reduction tool - Google Patents
Swivel bearing type drag reduction tool Download PDFInfo
- Publication number
- CN203769672U CN203769672U CN201420186718.XU CN201420186718U CN203769672U CN 203769672 U CN203769672 U CN 203769672U CN 201420186718 U CN201420186718 U CN 201420186718U CN 203769672 U CN203769672 U CN 203769672U
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- CN
- China
- Prior art keywords
- drag reduction
- bush
- spiral
- friction
- supporting positive
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- Expired - Fee Related
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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 an auxiliary fixing piece. The drag reduction tool body is of a tubular structure and the two ends of the drag reduction tool body are respectively connected with a drill rod. The bearing type drag reduction mechanism comprises a drag reduction spacer bush, a spiral correcting bush and an internal friction lining. The auxiliary fixing piece comprises a fixing bush and fixing pins. The internal friction lining is fixed to the drag reduction tool body through the fixing pins. The fixing bush is fixed to the portion, below the internal friction lining, of the drag reduction tool body. The spiral correcting bush is clamped between the fixing bush and the internal friction lining. The drag reduction spacer bush is arranged at the lower end of the spiral correcting bush and makes contact with the fixing bush. A swivel bearing type drag reduction structure is adopted in the swivel bearing type drag reduction tool, alloy is embedded into the surface of the spiral correcting bush or an anti-abrasion belt is welded to the surface of the spiral correcting bush, friction drag generated by a well wall to the drill rod is greatly reduced, the drilling speed increase effect is achieved, and the tool has the advantages that the structure is reasonable, use is convenient and the service life of the drill rod is long.
Description
Technical field
The utility model relates to drilling tool technical field, is 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 improved the efficiency of drilling well, shortened 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.
Utility model content
The utility model provides a kind of swivel bearing formula friction reducer, the problem that causes drill pipe wear to solve drilling rod that prior art exists and the friction between the borehole wall.
The utility model solves the technical scheme that its technical problem adopts:
A kind of swivel bearing formula friction reducer, comprise friction reducer main body, bearing-type drag reduction mechanism and auxiliary fixing member form, 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, the utility model instrument is installed one at a certain distance at drilling rod, the spiral supporting positive cover of bearing-type drag reduction mechanism contact borehole wall during 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.
The utility model device adopts 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, have advantages of rational in infrastructure, easy to use, improve drilling life of drill pipe.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of the utility model device in specific embodiment 1;
Fig. 2 is the structural representation of the utility model device 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 form, 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, the utility model instrument is installed one at a certain distance at drilling rod, the spiral supporting positive cover 4 contact boreholes wall of bearing-type drag reduction mechanism during work, 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 form, 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, the utility model instrument is installed one at a certain distance at drilling rod, the spiral supporting positive cover 4 contact boreholes wall of bearing-type drag reduction mechanism during work, 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 form, 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 |
|---|---|---|---|
| CN201420186718.XU CN203769672U (en) | 2014-04-12 | 2014-04-12 | Swivel bearing type drag reduction tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420186718.XU CN203769672U (en) | 2014-04-12 | 2014-04-12 | Swivel bearing type drag reduction tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203769672U true CN203769672U (en) | 2014-08-13 |
Family
ID=51286873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420186718.XU Expired - Fee Related CN203769672U (en) | 2014-04-12 | 2014-04-12 | Swivel bearing type drag reduction tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203769672U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912223A (en) * | 2014-04-12 | 2014-07-09 | 山东陆海石油装备有限公司 | Swivel bearing type drag reduction tool |
| CN109025842A (en) * | 2018-09-25 | 2018-12-18 | 中煤科工集团西安研究院有限公司 | A kind of method and double-layer drill rod for offsetting double-layer drill rod circumferential direction frictional resistance |
| CN110424900A (en) * | 2019-08-26 | 2019-11-08 | 四川轻化工大学 | Torsion reducing joint for drill rod |
-
2014
- 2014-04-12 CN CN201420186718.XU patent/CN203769672U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912223A (en) * | 2014-04-12 | 2014-07-09 | 山东陆海石油装备有限公司 | Swivel bearing type drag reduction tool |
| CN109025842A (en) * | 2018-09-25 | 2018-12-18 | 中煤科工集团西安研究院有限公司 | A kind of method and double-layer drill rod for offsetting double-layer drill rod circumferential direction frictional resistance |
| CN109025842B (en) * | 2018-09-25 | 2020-08-25 | 中煤科工集团西安研究院有限公司 | Method for offsetting circumferential friction resistance of double-layer drill rod and double-layer drill rod |
| CN110424900A (en) * | 2019-08-26 | 2019-11-08 | 四川轻化工大学 | Torsion reducing joint for drill rod |
| CN110424900B (en) * | 2019-08-26 | 2020-11-10 | 四川轻化工大学 | Torsion reducing joint for drill rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANDONG LUHAI PETROLEUM EQUIPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 250000 North Road, middle of Beichen Road, Lingxian County Economic Development Zone, Dezhou, Shandong Patentee 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 Patentee before: Shandong Luhai Petroleum Equipment Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Jianbing Inventor after: Liu Xiaogang Inventor after: Mou Xiaojun Inventor after: Zhu Yihui Inventor after: Fu Jianmin Inventor after: Liu Yuming Inventor after: Wang Kunjian Inventor after: Zhao Haibin Inventor before: Zhao Zhigang Inventor before: Wang Chunxiu Inventor before: Feng Tingting Inventor before: Yang Xiaofeng |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160119 Address after: 100000 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: CNOOC Energy Development Co., Ltd. Address before: 250000 North Road, middle of Beichen Road, Lingxian County Economic Development Zone, Dezhou, Shandong Patentee before: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20210412 |