CN205422527U - 用于软煤层钻进的多动力源组合钻具 - Google Patents
用于软煤层钻进的多动力源组合钻具 Download PDFInfo
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- CN205422527U CN205422527U CN201620193245.5U CN201620193245U CN205422527U CN 205422527 U CN205422527 U CN 205422527U CN 201620193245 U CN201620193245 U CN 201620193245U CN 205422527 U CN205422527 U CN 205422527U
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105604481A (zh) * | 2016-03-14 | 2016-05-25 | 中国矿业大学(北京) | 用于软煤层钻进的多动力源组合钻具及其使用方法 |
CN109209283A (zh) * | 2018-11-09 | 2019-01-15 | 河南理工大学 | 下向钻孔随钻封堵式排渣装置及方法 |
CN114033315A (zh) * | 2021-11-15 | 2022-02-11 | 河南理工大学 | 一种突出煤层盾护卸压孔内钻具及其孔外封闭系统 |
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- 2016-03-14 CN CN201620193245.5U patent/CN205422527U/zh not_active Withdrawn - After Issue
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105604481A (zh) * | 2016-03-14 | 2016-05-25 | 中国矿业大学(北京) | 用于软煤层钻进的多动力源组合钻具及其使用方法 |
CN105604481B (zh) * | 2016-03-14 | 2017-11-10 | 中国矿业大学(北京) | 用于软煤层钻进的多动力源组合钻具 |
CN109209283A (zh) * | 2018-11-09 | 2019-01-15 | 河南理工大学 | 下向钻孔随钻封堵式排渣装置及方法 |
CN114033315A (zh) * | 2021-11-15 | 2022-02-11 | 河南理工大学 | 一种突出煤层盾护卸压孔内钻具及其孔外封闭系统 |
CN114033315B (zh) * | 2021-11-15 | 2023-09-15 | 河南理工大学 | 一种突出煤层盾护卸压孔内钻具及其孔外封闭系统 |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CB03 | Change of inventor or designer information |
Inventor after: Wang Kai Inventor after: Liu Ang Inventor after: Zhou Aitao Inventor after: Jiang Yifeng Inventor before: Jiang Yifeng Inventor before: Liu Ang Inventor before: Zhou Aitao |
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COR | Change of bibliographic data | ||
AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20171110 |
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AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20171110 |
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AV01 | Patent right actively abandoned | ||
AV01 | Patent right actively abandoned |