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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0535355 (1974-12-23) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 15 인용 특허 : 0 |
There is disclosed a single wire multiple shot selective fire perforating gun for piercing oil field tubular goods, typically during the process of completing an oil or gas well. A switch in the gun electrically isolates an associated blasting cap and short circuits the terminals thereof until the a
An explosively operated well tool comprising an elongate housing, runable into a well, carrying an electrically fireable explosive device having a pair of electrical terminals; firing circuit means including first and second elongate electrical conductors for electrically firing the device; means as
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