CN2737991Y - 抽油泵泵上挡砂器 - Google Patents
抽油泵泵上挡砂器 Download PDFInfo
- Publication number
- CN2737991Y CN2737991Y CN 200420097531 CN200420097531U CN2737991Y CN 2737991 Y CN2737991 Y CN 2737991Y CN 200420097531 CN200420097531 CN 200420097531 CN 200420097531 U CN200420097531 U CN 200420097531U CN 2737991 Y CN2737991 Y CN 2737991Y
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- Prior art keywords
- sand
- outer tube
- pump
- lower contact
- sand device
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200420097531 CN2737991Y (zh) | 2004-11-03 | 2004-11-03 | 抽油泵泵上挡砂器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200420097531 CN2737991Y (zh) | 2004-11-03 | 2004-11-03 | 抽油泵泵上挡砂器 |
Publications (1)
Publication Number | Publication Date |
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CN2737991Y true CN2737991Y (zh) | 2005-11-02 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN 200420097531 Expired - Fee Related CN2737991Y (zh) | 2004-11-03 | 2004-11-03 | 抽油泵泵上挡砂器 |
Country Status (1)
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CN (1) | CN2737991Y (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102287152A (zh) * | 2011-07-15 | 2011-12-21 | 中国石油天然气股份有限公司 | 一种旋转喷射清砂方法 |
CN109578256A (zh) * | 2018-12-17 | 2019-04-05 | 中船重工中南装备有限责任公司 | 防砂抽油泵 |
-
2004
- 2004-11-03 CN CN 200420097531 patent/CN2737991Y/zh not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102287152A (zh) * | 2011-07-15 | 2011-12-21 | 中国石油天然气股份有限公司 | 一种旋转喷射清砂方法 |
CN102287152B (zh) * | 2011-07-15 | 2014-06-04 | 中国石油天然气股份有限公司 | 一种旋转喷射清砂方法 |
CN109578256A (zh) * | 2018-12-17 | 2019-04-05 | 中船重工中南装备有限责任公司 | 防砂抽油泵 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C53 | Correction of patent for invention or patent application | ||
CB03 | Change of inventor or designer information |
Designer after: Guo Hongjin Designer after: Zhu Zejun Designer after: Ma Hongjiang Designer after: Yao Kai Designer after: Dang Longmei Designer after: You Longtan Designer after: Feng Yongli Designer before: Guo Hongjin Designer before: Zhu Zejun Designer before: Yao Kai Designer before: Dang Longmei Designer before: You Longtan Designer before: Feng Yongli |
|
COR | Change of bibliographic data |
Free format text: CORRECT: DESIGNER; FROM: GUO HONGJIN; ZHU ZEJUN; YAO KAI; DANG LONGMEI; YOU LONGTAN; FENG YONGLI TO: GUO HONGJIN; ZHU ZEJUN; MA HONGJIANG; YAO KAI; DANG LONGMEI; YOU LONGTAN; FENG YONGLI |
|
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |