[특허]Choke for controlling the flow of drilling mud

Choke for controlling the flow of drilling mud 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-005/00
출원번호	US-0018508 (1979-03-08)
발명자 / 주소	Claycomb Jack R. (8226 Waynemen Houston TX 77040)
인용정보	피인용 횟수 : 100 인용 특허 : 0

초록 ▼

This apparatus disclosed in its preferred form is a choke for controlling the flow of drilling mud which is highly abrasive. The abrasive drilling mud is introduced through a lateral port and an elongate, tubular body. In the tubular body, a fluid actuated, double acting piston is forced to a choke control position. The piston has appended to it a centralized, tubular extension which receives a sleeve of wear resistant material. The sleeve is positioned in a circular chamber communicated to the lateral port where the drilling mud is introduced. It travels toward a seat downstream of the body. The seat is formed of hardened material. The downstream outlet of the body is additionally lined with a wear resistant sleeve. An alternate embodiment is also disclosed. A hydraulic control system for operation of the choke is also disclosed.

대표청구항 ▼

A choke for controlling the flow of mud which comprises: a hollow valve body having a passage therethrough; a valve seat having an encircling, tapered face surrounding an axial passage past said tapered face for directing mud flow past said tapered face within said valve body; an encircling valve seat shoulder axially spaced from said tapered face lying in a plane perpendicular to the flow through said axial passage; a valve element having an external tapered face conforming to said valve seat tapered face which said valve element, on movement, moves from a spaced position into a concentric, centrally positioned first throttling location within said valve opposite said valve seat tapered face and which said valve element and said valve seat tapered faces define a gap therebetween for throttling mud flow passing through the gap, and wherein said valve element controllably blocks the axial passage flow of mud past said valve seat on further movement of said valve element toward said valve seat shoulder defining a second throttling location having reduced flow compared to said first throttling location; a surrounding shoulder on said valve element which shoulder is adapted to conform to and seat against said valve seat shoulder to plug and close the flow of mud through the gap between said valve element and said valve seat, said shoulder further moving toward said valve seat shoulder for closure; means for moving said valve element into a fully closed position relative to said valve seat; and inlet and outlet means communicating with said passage through said valve body.

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Vail, III,William Banning, Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Choke for controlling the flow of drilling mud 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (100)

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연합인증

Choke for controlling the flow of drilling mud 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (100)

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