Patent · US Active

Subsurface safety valve and method of actuation

US8393386B2 · kind B2 · utility

10Cited by

21References

20Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

Gary B. Lake · Houston, US
John Burris · Bixby, US
David Z. Anderson · New Braunfels, US
Brock Alan Peoples · Sapulpa, US
Robert McDaniel · Broken Arrow, US
Charles M. Tompkins · Tulsa, US
Grant Thompson · Tulsa, US

Key dates

Filing date	Nov 23, 2009
Grant date	Mar 12, 2013
Priority date	—
Expiry date	Oct 17, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K31/082
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A downhole valve apparatus including a force transmitter configured to move in an axial direction and a valve actuator configured to move in an axial direction. The valve actuator is independently movable relative to the force transmitter and physically isolated from the force transmitter. A first magnetic assembly is disposed at the force transmitter. A second magnetic assembly is disposed at the valve actuator. The first and second magnetic assemblies are configured to repel one another and cause the force transmitter to move the valve actuator when the force transmitter is moved toward the valve actuator.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.