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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0701792 (2003-11-05) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 7 인용 특허 : 7 |
The present invention is an improvement in the design of a perforating gun to perforate the casing in oil and gas wells. Perforating guns have a cylindrical body member with explosive charges at specified intervals designed to shoot outwardly through the body member, the well casing, cement sheath,
1. A well perforating device comprising a tubular body member having a plurality of inwardly shaped hole penetration areas of reduced thickness formed on the outer surface thereof, and a plurality of perforating charges positioned within said body member, each of said perforating charges containing
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