CN201730567U - 小排量螺杆泵洗井不压井器 - Google Patents
小排量螺杆泵洗井不压井器 Download PDFInfo
- Publication number
- CN201730567U CN201730567U CN2010205147940U CN201020514794U CN201730567U CN 201730567 U CN201730567 U CN 201730567U CN 2010205147940 U CN2010205147940 U CN 2010205147940U CN 201020514794 U CN201020514794 U CN 201020514794U CN 201730567 U CN201730567 U CN 201730567U
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- Prior art keywords
- center pipe
- movable valve
- center tube
- well flushing
- screw pump
- 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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- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2010205147940U CN201730567U (zh) | 2010-09-02 | 2010-09-02 | 小排量螺杆泵洗井不压井器 |
Applications Claiming Priority (1)
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CN2010205147940U CN201730567U (zh) | 2010-09-02 | 2010-09-02 | 小排量螺杆泵洗井不压井器 |
Publications (1)
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CN201730567U true CN201730567U (zh) | 2011-02-02 |
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CN2010205147940U Expired - Fee Related CN201730567U (zh) | 2010-09-02 | 2010-09-02 | 小排量螺杆泵洗井不压井器 |
Country Status (1)
Country | Link |
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CN (1) | CN201730567U (zh) |
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2010
- 2010-09-02 CN CN2010205147940U patent/CN201730567U/zh not_active Expired - Fee Related
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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: DAQING XIANXING PETROLEUM TECHNOLOGY DEVELOPMENT C Free format text: FORMER OWNER: GUAN XIAODONG Effective date: 20140126 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20140126 Address after: 163316 C, block 411, hi tech Zone, Daqing hi tech Zone, Heilongjiang Patentee after: Daqing pioneer Petroleum Science and Technology Development Co Ltd Address before: 163316 Daqing science and Technology Development Zone, Heilongjiang Development Zone, C block, Room 411 Patentee before: Guan Xiaodong |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20150902 |
|
EXPY | Termination of patent right or utility model |