CN201756941U - 机械投放式浅井油管堵塞器 - Google Patents
机械投放式浅井油管堵塞器 Download PDFInfo
- Publication number
- CN201756941U CN201756941U CN2010202914368U CN201020291436U CN201756941U CN 201756941 U CN201756941 U CN 201756941U CN 2010202914368 U CN2010202914368 U CN 2010202914368U CN 201020291436 U CN201020291436 U CN 201020291436U CN 201756941 U CN201756941 U CN 201756941U
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- China
- Prior art keywords
- piston tube
- core pipe
- tube
- packing element
- tubing plug
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- 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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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2010202914368U CN201756941U (zh) | 2010-08-13 | 2010-08-13 | 机械投放式浅井油管堵塞器 |
Applications Claiming Priority (1)
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CN2010202914368U CN201756941U (zh) | 2010-08-13 | 2010-08-13 | 机械投放式浅井油管堵塞器 |
Publications (1)
Publication Number | Publication Date |
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CN201756941U true CN201756941U (zh) | 2011-03-09 |
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CN2010202914368U Expired - Lifetime CN201756941U (zh) | 2010-08-13 | 2010-08-13 | 机械投放式浅井油管堵塞器 |
Country Status (1)
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CN (1) | CN201756941U (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102733776A (zh) * | 2012-07-19 | 2012-10-17 | 马中原 | 可捞式油管堵塞器 |
-
2010
- 2010-08-13 CN CN2010202914368U patent/CN201756941U/zh not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102733776A (zh) * | 2012-07-19 | 2012-10-17 | 马中原 | 可捞式油管堵塞器 |
CN102733776B (zh) * | 2012-07-19 | 2014-08-13 | 马中原 | 可捞式油管堵塞器 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: TOP-WELL PETROLEUM TECHNOLOGIES COMPANY LTD. Free format text: FORMER OWNER: BEIJING TOP-WELL PETROLEUM TECHNOLOGIES SERVICE COMPANY LTD. Effective date: 20121116 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20121116 Address after: 100012, room 32, security building, 2101 Beiyuan Road, Beijing, Chaoyang District Patentee after: Top-Well Petroleum Technologies Company Ltd. Address before: 100012, room 32, security building, 2101 Beiyuan Road, Beijing, Chaoyang District Patentee before: Top Well Services Inc. |
|
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20110309 |