CN202215174U - Near-well blockage removing device for unconsolidated sandstone heavy oil reservoir - Google Patents
Near-well blockage removing device for unconsolidated sandstone heavy oil reservoir Download PDFInfo
- Publication number
- CN202215174U CN202215174U CN2011202907621U CN201120290762U CN202215174U CN 202215174 U CN202215174 U CN 202215174U CN 2011202907621 U CN2011202907621 U CN 2011202907621U CN 201120290762 U CN201120290762 U CN 201120290762U CN 202215174 U CN202215174 U CN 202215174U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- inner sleeve
- removing device
- ball valve
- plug
- 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 - Lifetime
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011202907621U CN202215174U (en) | 2011-08-11 | 2011-08-11 | Near-well blockage removing device for unconsolidated sandstone heavy oil reservoir |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011202907621U CN202215174U (en) | 2011-08-11 | 2011-08-11 | Near-well blockage removing device for unconsolidated sandstone heavy oil reservoir |
Publications (1)
Publication Number | Publication Date |
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CN202215174U true CN202215174U (en) | 2012-05-09 |
Family
ID=46014434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2011202907621U Expired - Lifetime CN202215174U (en) | 2011-08-11 | 2011-08-11 | Near-well blockage removing device for unconsolidated sandstone heavy oil reservoir |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN202215174U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102305040A (en) * | 2011-08-11 | 2012-01-04 | 中国海洋石油总公司 | Near-well de-plugging device for loose sand heavy oil reservoir |
-
2011
- 2011-08-11 CN CN2011202907621U patent/CN202215174U/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102305040A (en) * | 2011-08-11 | 2012-01-04 | 中国海洋石油总公司 | Near-well de-plugging device for loose sand heavy oil reservoir |
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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 | ||
CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center |
|
CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |
|
CP01 | Change in the name or title of a patent holder | ||
CX01 | Expiry of patent term |
Granted publication date: 20120509 |
|
CX01 | Expiry of patent term |