CN207177840U - 爆破片封堵式可关闭循环冲砂工具 - Google Patents
爆破片封堵式可关闭循环冲砂工具 Download PDFInfo
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- CN207177840U CN207177840U CN201720874692.1U CN201720874692U CN207177840U CN 207177840 U CN207177840 U CN 207177840U CN 201720874692 U CN201720874692 U CN 201720874692U CN 207177840 U CN207177840 U CN 207177840U
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- movable sleeve
- circulating sub
- rupture disk
- plate valve
- limiting stand
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CN201720874692.1U CN207177840U (zh) | 2017-07-18 | 2017-07-18 | 爆破片封堵式可关闭循环冲砂工具 |
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CN201720874692.1U CN207177840U (zh) | 2017-07-18 | 2017-07-18 | 爆破片封堵式可关闭循环冲砂工具 |
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CN207177840U true CN207177840U (zh) | 2018-04-03 |
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CN201720874692.1U Expired - Fee Related CN207177840U (zh) | 2017-07-18 | 2017-07-18 | 爆破片封堵式可关闭循环冲砂工具 |
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CN (1) | CN207177840U (zh) |
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2017
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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: 20211117 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd., No. 83, Second Street, economic and Technological Development Zone, Binhai New Area, Tianjin, 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 |