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특허 상세정보

Fail safe surface controlled subsurface safety valve for use in a well

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E21B-023/00    E21B-034/08    E21B-043/00   
미국특허분류(USC) 166/066.7; 166/053; 166/066; 166/386; 166/332.8; 166/334.2
출원번호 US-0784723 (2001-02-15)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Carroll, Rodney B.
인용정보 피인용 횟수 : 112  인용 특허 : 23
초록

The present invention is a surface controlled subsurface safety valve (SCSSV) for use in a well, preferably a hydrocarbon producing well. The SCSSV comprises a valve body having a longitudinal bore for fluid to flow through, a bore closure assembly, a pressure balanced drive assembly, and a fail safe assembly. The bore closure assembly is positioned and normally biased to close the bore to fluid flow. The drive assembly is coupled to the bore closure assembly for driving the bore closure assembly to an open position. The fail safe assembly is positioned ...

대표
청구항

The present invention is a surface controlled subsurface safety valve (SCSSV) for use in a well, preferably a hydrocarbon producing well. The SCSSV comprises a valve body having a longitudinal bore for fluid to flow through, a bore closure assembly, a pressure balanced drive assembly, and a fail safe assembly. The bore closure assembly is positioned and normally biased to close the bore to fluid flow. The drive assembly is coupled to the bore closure assembly for driving the bore closure assembly to an open position. The fail safe assembly is positioned ...

이 특허에 인용된 특허 (23)

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