CN201297154Y - 油井封隔器 - Google Patents
油井封隔器 Download PDFInfo
- Publication number
- CN201297154Y CN201297154Y CNU200820173396XU CN200820173396U CN201297154Y CN 201297154 Y CN201297154 Y CN 201297154Y CN U200820173396X U CNU200820173396X U CN U200820173396XU CN 200820173396 U CN200820173396 U CN 200820173396U CN 201297154 Y CN201297154 Y CN 201297154Y
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- CN
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- Prior art keywords
- piston
- deblocking
- packing element
- inner tube
- cone
- 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.)
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Abstract
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Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU200820173396XU CN201297154Y (zh) | 2008-10-21 | 2008-10-21 | 油井封隔器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU200820173396XU CN201297154Y (zh) | 2008-10-21 | 2008-10-21 | 油井封隔器 |
Publications (1)
Publication Number | Publication Date |
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CN201297154Y true CN201297154Y (zh) | 2009-08-26 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CNU200820173396XU Expired - Fee Related CN201297154Y (zh) | 2008-10-21 | 2008-10-21 | 油井封隔器 |
Country Status (1)
Country | Link |
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CN (1) | CN201297154Y (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101382053B (zh) * | 2008-10-21 | 2011-12-14 | 张永祥 | 油井封隔器 |
CN110388192A (zh) * | 2019-08-15 | 2019-10-29 | 东营宏博石油装备有限公司 | 一种可取式油管堵塞器 |
CN111287689A (zh) * | 2020-04-15 | 2020-06-16 | 西南石油大学 | 一种单卡瓦全可溶油管封堵桥塞 |
-
2008
- 2008-10-21 CN CNU200820173396XU patent/CN201297154Y/zh not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101382053B (zh) * | 2008-10-21 | 2011-12-14 | 张永祥 | 油井封隔器 |
CN110388192A (zh) * | 2019-08-15 | 2019-10-29 | 东营宏博石油装备有限公司 | 一种可取式油管堵塞器 |
CN111287689A (zh) * | 2020-04-15 | 2020-06-16 | 西南石油大学 | 一种单卡瓦全可溶油管封堵桥塞 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Fangyuan Oil Furnishment Co., Ltd., Shengli Oil Fie Supply Department Assignor: Zhang Yongxiang Contract record no.: 2010370000205 Denomination of utility model: Starch-(methyl) acrylic ester grafted copolymer, oil suction swelling rubber comprising same and oil well packer Granted publication date: 20090826 License type: Exclusive License Record date: 20100430 |
|
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20091123 |