Baker Hughes Corporation

John E Burris

David Z Anderson

Grant R Thompson

Brock Alan Peoples

Gary B Lake

James T Sloan

Anthony S Coghill

Charles M Tompkins

Tyler C Roberts

Doug A Lowry

Jeremy R Johnson

Robert G McDaniel

An actuation assembly including a sleeve member having a radially outwardly extending projection and a piston having an axis, the piston operatively coupled to the projection of the sleeve member and arranged to exert an actuation force on the projection of the sleeve member for actuating the sleeve member, the actuation force positioned about radially aligned with the axis or radially outwardly from the axis.

Method of reducing deflection through a rod piston in a subsurface safety valve

A position monitoring system includes a tubular with a cavity formed therein, a magnet movable relative to the tubular, and a sensor sensible of a magnetic field of the magnet. A housing positioned within the cavity sealably isolates the sensor from environmental properties while permitting the sensor to sense the magnetic field of the magnet.

Magnetic position monitoring system and method

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.

Subsurface safety valve and method of actuation

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Sapulpa, OK, United States of America

John E Burris