CN2554543Y - 低耗能交流电油管电加热装置 - Google Patents
低耗能交流电油管电加热装置 Download PDFInfo
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- CN2554543Y CN2554543Y CN 02211299 CN02211299U CN2554543Y CN 2554543 Y CN2554543 Y CN 2554543Y CN 02211299 CN02211299 CN 02211299 CN 02211299 U CN02211299 U CN 02211299U CN 2554543 Y CN2554543 Y CN 2554543Y
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- pipe
- oil pipe
- transformer
- well head
- insulating
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN 02211299 CN2554543Y (zh) | 2002-04-16 | 2002-04-16 | 低耗能交流电油管电加热装置 |
Applications Claiming Priority (1)
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CN 02211299 CN2554543Y (zh) | 2002-04-16 | 2002-04-16 | 低耗能交流电油管电加热装置 |
Publications (1)
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CN2554543Y true CN2554543Y (zh) | 2003-06-04 |
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CN 02211299 Expired - Fee Related CN2554543Y (zh) | 2002-04-16 | 2002-04-16 | 低耗能交流电油管电加热装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113957444A (zh) * | 2021-09-14 | 2022-01-21 | 陕西省建文能源科技有限公司 | 油气井智能外加电流防腐系统 |
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2002
- 2002-04-16 CN CN 02211299 patent/CN2554543Y/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113957444A (zh) * | 2021-09-14 | 2022-01-21 | 陕西省建文能源科技有限公司 | 油气井智能外加电流防腐系统 |
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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: PANJIN LIAOHE OILFIELD YUDA INDUSTRIAL CO., LTD. Free format text: FORMER OWNER: PANJIN LIAOHE OIL FIELD TIANXING SCIENCE INDUSTRY CO., LTD. Effective date: 20080627 |
|
C41 | Transfer of patent application or patent right or utility model | ||
C53 | Correction of patent for invention or patent application | ||
CB03 | Change of inventor or designer information |
Inventor after: Wu Guohai Inventor after: Zhao Changhai Inventor after: Tian Guang Inventor before: Wu Guohai Inventor before: Zhao Changhai |
|
COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WU GUOHAI; ZHAO ZHANGHAI TO: WU GUOHAI; ZHAO ZHANGHAI; TIAN GUANG |
|
TR01 | Transfer of patent right |
Effective date of registration: 20080627 Address after: No. 35, Zhong Xing Middle Road, Xinglongtai District, Liaoning, Panjin Province, China: 124010 Patentee after: Panjin Liaohe oil field Yuda Industry Co., Ltd. Address before: Drilling Commission of Xinglongtai District, Liaoning City, Panjin Province: 124010 Patentee before: Tianxing Sci-Tech Industry Co., Ltd. Liaohe Oil Field, Panjin |
|
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030604 |