CN206928922U - 逐级解封分段丢手工具 - Google Patents
逐级解封分段丢手工具 Download PDFInfo
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- CN206928922U CN206928922U CN201720799944.9U CN201720799944U CN206928922U CN 206928922 U CN206928922 U CN 206928922U CN 201720799944 U CN201720799944 U CN 201720799944U CN 206928922 U CN206928922 U CN 206928922U
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CN201720799944.9U CN206928922U (zh) | 2017-07-04 | 2017-07-04 | 逐级解封分段丢手工具 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107100572A (zh) * | 2017-07-04 | 2017-08-29 | 唐山冀东石油机械有限责任公司 | 逐级解封分段丢手工具 |
CN108561095A (zh) * | 2018-06-28 | 2018-09-21 | 唐山冀东石油机械有限责任公司 | 可密封尾管解封打捞工具 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107100572A (zh) * | 2017-07-04 | 2017-08-29 | 唐山冀东石油机械有限责任公司 | 逐级解封分段丢手工具 |
CN108561095A (zh) * | 2018-06-28 | 2018-09-21 | 唐山冀东石油机械有限责任公司 | 可密封尾管解封打捞工具 |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20190613 Address after: 063200 No. 261 Xincheng Street, Caofeidian District, Tangshan City, Hebei Province Patentee after: Tangshan Jidong Petroleum Machinery Co., Ltd. Address before: 063200 No. 261 Xincheng Street, Caofeidian District, Tangshan City, Hebei Province Co-patentee before: DRILLING TECHNOLOGY RESEARCH INSTITUTE, JIDONG OILFIELD BRANCH OF CNPC Patentee before: Tangshan Jidong Petroleum Machinery Co., Ltd. |
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TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20200930 Address after: No.10 Guoan Road, comprehensive bonded zone, Caofeidian Industrial Zone, Tangshan City, Hebei Province Patentee after: TANGSHAN JIDONG PETROLEUM MACHINERY Co.,Ltd. Patentee after: PetroChina Co.,Ltd. Address before: 063200, 261, Xincheng Avenue, Caofeidian District, Hebei, Tangshan City Patentee before: TANGSHAN JIDONG PETROLEUM MACHINERY Co.,Ltd. |