CN204238905U - 抽油井热能防蜡器 - Google Patents
抽油井热能防蜡器 Download PDFInfo
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- CN204238905U CN204238905U CN201420668934.8U CN201420668934U CN204238905U CN 204238905 U CN204238905 U CN 204238905U CN 201420668934 U CN201420668934 U CN 201420668934U CN 204238905 U CN204238905 U CN 204238905U
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CN201420668934.8U CN204238905U (zh) | 2014-11-11 | 2014-11-11 | 抽油井热能防蜡器 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108661598A (zh) * | 2018-03-20 | 2018-10-16 | 刘玉友 | 柱塞式油井自发电防蜡装置及方法 |
CN108716381A (zh) * | 2018-03-20 | 2018-10-30 | 刘玉友 | 螺杆泵油井自发电防蜡装置及方法 |
CN112392436A (zh) * | 2020-12-01 | 2021-02-23 | 中国石油天然气股份有限公司 | 一种电磁感应自生热清防蜡管柱及清防蜡方法 |
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2014
- 2014-11-11 CN CN201420668934.8U patent/CN204238905U/zh active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108661598A (zh) * | 2018-03-20 | 2018-10-16 | 刘玉友 | 柱塞式油井自发电防蜡装置及方法 |
CN108716381A (zh) * | 2018-03-20 | 2018-10-30 | 刘玉友 | 螺杆泵油井自发电防蜡装置及方法 |
CN108661598B (zh) * | 2018-03-20 | 2020-10-27 | 大庆庆拓石油机械制造有限责任公司 | 柱塞式油井自发电防蜡装置及方法 |
CN112392436A (zh) * | 2020-12-01 | 2021-02-23 | 中国石油天然气股份有限公司 | 一种电磁感应自生热清防蜡管柱及清防蜡方法 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Heat-energy antiwax apparatus for pumping well Effective date of registration: 20191101 Granted publication date: 20150401 Pledgee: Bank of Kunlun Limited by Share Ltd. Karamay branch Pledgor: XINJIANG KARAMAY CAIFENG INDUSTRIAL Co.,Ltd. Registration number: Y2019650000001 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230801 Granted publication date: 20150401 Pledgee: Bank of Kunlun Limited by Share Ltd. Karamay branch Pledgor: XINJIANG KARAMAY CAIFENG INDUSTRIAL Co.,Ltd. Registration number: Y2019650000001 |