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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- Prior art keywords
- drag reduction
- bush
- spiral
- friction
- supporting positive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
Description
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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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 |
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CN201420186718.XU CN203769672U (en) | 2014-04-12 | 2014-04-12 | Swivel bearing type drag reduction tool |
Publications (1)
Publication Number | Publication Date |
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CN203769672U true CN203769672U (en) | 2014-08-13 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201420186718.XU Expired - Fee Related CN203769672U (en) | 2014-04-12 | 2014-04-12 | Swivel bearing type drag reduction tool |
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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 |