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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0266706 (1981-05-26) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 10 인용 특허 : 3 |
A drilling choke for controlling flow of drilling fluids from a well comprising: a body having an inlet and outlet and an intermediate cavity therebetween; a seat member coaxially disposed in the body outlet; an operator assembly removably attached to the body; and a stem assembly connected to the o
A drilling choke for controlling flow of fluids from a well, said choke comprising: body means having an inlet, an outlet and an intermediate cavity providing fluid communication betwen said inlet and outlet; seat means coaxially disposed in said body outlet; operator means removably attached to sai
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