[특허]Well tubing anchor with automatic delay and method of installation in a well

[미국특허] Well tubing anchor with automatic delay and method of installation in a well 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-023/04 E21B-043/10
출원번호	US-0595561 (1975-07-14)
발명자 / 주소	Page Jr. John S. (10424 Echo River Court Fountain Valley CA 92708)
인용정보	피인용 횟수 : 108 인용 특허 : 0

초록

A well tubing anchor incorporates means to delay movement of slips relative to a wedge surface until predetermined well fluid pressure is exerted on a piston or pistons that urge the slips axially.

대표청구항 ▼

In apparatus to anchor well tubing to well casing, a. a tubular body having an axis and an outer side wall, the body connectible in series with a well tubing string, there being a wedge surface on the body and tapering axially, b. slip means and a carrier therefore movable axially relative to the body so that the slip means is urged relatively radially outwardly toward the casing by the wedge surface, c. piston means carried for axial movement relative to the body, the piston means operatively connected with said carrier and having piston surface extent exposed to well fluid pressure acting to urge the piston means, carrier and slips axially as aforesaid, and d. delay means to transmit force acting to delay said relative movement of the carrier and slip means until predetermined well fluid pressure is exerted on said piston surface extent, said delay means comprising spring means carried by the body, said spring means including at least one spring and said piston means including at least one piston, said spring located in its entirety at one side of said axis and said piston located in its entirety at one side of said axis, said spring and piston confined within a cylinder defined by the body outer side wall. The method of installing anchor apparatus in a well, the apparatus comprising: a. a tubular body connectible in series with a well tubing string, there being a wedge surface on the body and tapering axially, b. slip means and a carrier therefore movable axially relative to the body so that the slip means is urged relatively radially outwardly toward the casing by the wedge surface, c. piston means carried for axial movement relative to the body, the piston means operatively connected with said carrier and having piston surface extent exposed to well fluid pressure acting to urge the piston means, carrier and slips axially as aforesaid, and d. delay means to transmit force acting to delay said relative movement of the carrier and slip means until predetermined well fluid pressure is exerted on said piston surface extent, the delay means comprising spring means, said method comprising e. adjusting said spring means to provide predetermined force acting on said piston means to delay said axial movement thereof, f. running said achor apparatus into a well in series with said well tubing and exposing the piston means to well fluid pressure.

이 특허를 인용한 특허 (108) 인용/피인용 타임라인 분석

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[미국특허] Well tubing anchor with automatic delay and method of installation in a well 원문보기

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[미국특허] Well tubing anchor with automatic delay and method of installation in a well 원문보기

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