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Title: Choke and kill control system

Abstract

A control system is described for a choke and kill safety valve for use in a well conduit, in which the valve indicates a housing having a bore therethrough, a sleeve telescopically movable in the housing about the bore, a valve closure member positioned in the housing and connected to the sleeve and movable between open and closed positions in the bore, a flow tube longitudinally movable in the housing for controlling the movement of the valve closure member, means between the sleeve and the flow tube for biasing the flow tube in a direction for causing the valve closure member to move the closed position, releasable latch means between the sleeve and the flow tube initially holding the flow tube in position holding the valve closure member in the open position, a biased piston and cylinder assembly initially engaging the releasable latch and holding the latch engaged, the assembly being exposed on one side to pressure in the housing, and the housing and the sleeve including openings which when aligned by movement of the sleeve by well pressure allows fluid to be inserted into the bore from the outside of the housing.

Inventors:
Publication Date:
OSTI Identifier:
7073119
Patent Number(s):
US 4760879
Assignee:
Camco, Inc., Houston, TX
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 27 Nov 1987
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; WELL DRILLING; CONTROL SYSTEMS; DRILLING EQUIPMENT; FLUID FLOW; SAFETY; VALVES; CONTROL EQUIPMENT; DRILLING; EQUIPMENT; FLOW REGULATORS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing

Citation Formats

Pringle, R E. Choke and kill control system. United States: N. p., 1988. Web.
Pringle, R E. Choke and kill control system. United States.
Pringle, R E. 1988. "Choke and kill control system". United States.
@article{osti_7073119,
title = {Choke and kill control system},
author = {Pringle, R E},
abstractNote = {A control system is described for a choke and kill safety valve for use in a well conduit, in which the valve indicates a housing having a bore therethrough, a sleeve telescopically movable in the housing about the bore, a valve closure member positioned in the housing and connected to the sleeve and movable between open and closed positions in the bore, a flow tube longitudinally movable in the housing for controlling the movement of the valve closure member, means between the sleeve and the flow tube for biasing the flow tube in a direction for causing the valve closure member to move the closed position, releasable latch means between the sleeve and the flow tube initially holding the flow tube in position holding the valve closure member in the open position, a biased piston and cylinder assembly initially engaging the releasable latch and holding the latch engaged, the assembly being exposed on one side to pressure in the housing, and the housing and the sleeve including openings which when aligned by movement of the sleeve by well pressure allows fluid to be inserted into the bore from the outside of the housing.},
doi = {},
url = {https://www.osti.gov/biblio/7073119}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 02 00:00:00 EDT 1988},
month = {Tue Aug 02 00:00:00 EDT 1988}
}