CN102392680B - 孔底直刀割缝装置 - Google Patents
孔底直刀割缝装置 Download PDFInfo
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- CN102392680B CN102392680B CN 201110393882 CN201110393882A CN102392680B CN 102392680 B CN102392680 B CN 102392680B CN 201110393882 CN201110393882 CN 201110393882 CN 201110393882 A CN201110393882 A CN 201110393882A CN 102392680 B CN102392680 B CN 102392680B
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN 201110393882 CN102392680B (zh) | 2011-12-02 | 2011-12-02 | 孔底直刀割缝装置 |
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CN 201110393882 CN102392680B (zh) | 2011-12-02 | 2011-12-02 | 孔底直刀割缝装置 |
Publications (2)
Publication Number | Publication Date |
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CN102392680A CN102392680A (zh) | 2012-03-28 |
CN102392680B true CN102392680B (zh) | 2013-08-07 |
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CN 201110393882 Expired - Fee Related CN102392680B (zh) | 2011-12-02 | 2011-12-02 | 孔底直刀割缝装置 |
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2321962B1 (de) * | 1973-05-02 | 1974-05-09 | Brueckner Grundbau Gmbh, 4300 Essen | Vorrichtung zum Erweitern von Bohrlöchern |
SU962575A1 (ru) * | 1980-10-08 | 1982-09-30 | Научно-производственное объединение по термическим методам добычи нефти | Расширитель |
SU976005A2 (ru) * | 1981-05-13 | 1982-11-23 | Артемовская Геологоразведочная Экспедиция Производственного Геологического Объединения "Донбассгеология" Министерства Геологии Усср | Гидравлический расширитель |
SU1317088A1 (ru) * | 1985-12-17 | 1987-06-15 | Ленинградский инженерно-строительный институт | Устройство дл образовани скважин с уширени ми |
SU1500752A1 (ru) * | 1987-07-14 | 1989-08-15 | Vnii Gidrogeologii Inzh Geol | Расширитель |
CN102116168A (zh) * | 2011-01-26 | 2011-07-06 | 河南理工大学 | 低渗透、松软煤层抽采瓦斯系统及方法 |
CN102135011A (zh) * | 2011-02-15 | 2011-07-27 | 上海宏睿油气田径向井技术服务有限公司 | 一种井下径向钻孔抽排煤层气的装置 |
CN202325458U (zh) * | 2011-12-02 | 2012-07-11 | 辽宁工程技术大学 | 孔底直刀割缝装置 |
-
2011
- 2011-12-02 CN CN 201110393882 patent/CN102392680B/zh not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2321962B1 (de) * | 1973-05-02 | 1974-05-09 | Brueckner Grundbau Gmbh, 4300 Essen | Vorrichtung zum Erweitern von Bohrlöchern |
SU962575A1 (ru) * | 1980-10-08 | 1982-09-30 | Научно-производственное объединение по термическим методам добычи нефти | Расширитель |
SU976005A2 (ru) * | 1981-05-13 | 1982-11-23 | Артемовская Геологоразведочная Экспедиция Производственного Геологического Объединения "Донбассгеология" Министерства Геологии Усср | Гидравлический расширитель |
SU1317088A1 (ru) * | 1985-12-17 | 1987-06-15 | Ленинградский инженерно-строительный институт | Устройство дл образовани скважин с уширени ми |
SU1500752A1 (ru) * | 1987-07-14 | 1989-08-15 | Vnii Gidrogeologii Inzh Geol | Расширитель |
CN102116168A (zh) * | 2011-01-26 | 2011-07-06 | 河南理工大学 | 低渗透、松软煤层抽采瓦斯系统及方法 |
CN102135011A (zh) * | 2011-02-15 | 2011-07-27 | 上海宏睿油气田径向井技术服务有限公司 | 一种井下径向钻孔抽排煤层气的装置 |
CN202325458U (zh) * | 2011-12-02 | 2012-07-11 | 辽宁工程技术大学 | 孔底直刀割缝装置 |
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CN102392680A (zh) | 2012-03-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C53 | Correction of patent of invention or patent application | ||
CB03 | Change of inventor or designer information |
Inventor after: Pan Yishan Inventor after: Tang Zhi Inventor after: Song Yimin Inventor after: Li Zhonghua Inventor after: Li Guozhen Inventor after: Yan Haipeng Inventor before: Pan Yishan Inventor before: Song Yimin Inventor before: Tang Zhi Inventor before: Li Zhonghua Inventor before: Li Guozhen Inventor before: Yan Haipeng |
|
COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: PAN YISHAN SONG YIMIN TANG ZHI LI ZHONGHUA LI GUOZHEN YAN HAIPENG TO: PAN YISHAN TANG ZHI SONG YIMIN LI ZHONGHUA LI GUOZHEN YAN HAIPENG |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20131202 |