CN207553984U - 一种空气钻进双壁钻杆正反循环转换接头 - Google Patents
一种空气钻进双壁钻杆正反循环转换接头 Download PDFInfo
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CN201721622394.XU CN207553984U (zh) | 2017-11-29 | 2017-11-29 | 一种空气钻进双壁钻杆正反循环转换接头 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107701123A (zh) * | 2017-11-29 | 2018-02-16 | 河北天理环保科技有限公司 | 一种空气钻进双壁钻杆正反循环转换接头 |
CN113266269A (zh) * | 2021-05-11 | 2021-08-17 | 中国石油天然气集团有限公司 | 钻杆动力头装置、循环装置及钻机 |
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2017
- 2017-11-29 CN CN201721622394.XU patent/CN207553984U/zh active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107701123A (zh) * | 2017-11-29 | 2018-02-16 | 河北天理环保科技有限公司 | 一种空气钻进双壁钻杆正反循环转换接头 |
CN113266269A (zh) * | 2021-05-11 | 2021-08-17 | 中国石油天然气集团有限公司 | 钻杆动力头装置、循环装置及钻机 |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An air drilling double-wall drill pipe forward and reverse circulation conversion joint Effective date of registration: 20220920 Granted publication date: 20180629 Pledgee: Guangping County Rural Credit Cooperative Pledgor: HANDAN WEIYE GEOTHERMAL DEVELOPMENT CO.,LTD. Registration number: Y2022130000073 |
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PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
CP03 | Change of name, title or address |
Address after: 057651 North side of the middle section of Jin Guangyuan Road, Guangping County, Handan City, Hebei Province Patentee after: Hebei Weiye Geothermal New Energy Technology Co.,Ltd. Address before: 057650 north side of Jinguang Yuan Road, Guang Ping County, Handan, Hebei Patentee before: HANDAN WEIYE GEOTHERMAL DEVELOPMENT CO.,LTD. |
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CP03 | Change of name, title or address |