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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0302666 (1989-01-27) |
우선권정보 | FR-0001087 (1988-01-29); FR-0001088 (1988-01-29) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 53 인용 특허 : 5 |
A process and device for hydraulically and selectively controlling, in two circulation directions, at least two tools or instruments connected to a casing located inside a well. A first hydraulic line is provided which includes branches to a first and a second of the two tools or instruments, with a
A device for hydraulically and selectively controlling a set of at least two instruments or tools connected to a casing located inside a well having at least two different producing zones, said two instruments or tools being disposed adjacent to each of said producing zones, characterized by having
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