Schlumberger Technology Corporation

Clint William Philbrick

Jonathan D Marshall

Edward George Parkin

Michael Pearce

Julien Steimetz

D Peter Johnson

Yuelin Shen

Scott Richard Woolston

Mauro Caresta

A torsional damping system includes a housing having an interior space. An inertia ring is located in the interior space, and a torsion fluid is located between the inertia ring and the housing. The inertia ring is rotatably installed relative to the housing. As the housing oscillates, the inertia ring damps at least a portion of the oscillation. The torsional damping system may be included in a downhole tool or bottomhole assembly, and used to damp oscillations along a drill string or along the bottomhole assembly, including between a downhole motor and a cutting tool.

Inertia damping systems and methods

A tool, e.g. a downhole tool, utilizes at least one actuator which may be actuated rapidly between positions during operation of the tool. The actuator is moved via flow of an actuating fluid controlled by a main valve which, in turn, is controlled via a pilot valve. The pilot valve is operated to selectively control flow of the actuating fluid to the main valve so as to shift the main valve between desired operational positions.

Actuation valve system with pilot and main valves

Pilot controlled actuation valve system

Growing community of inventors

Springville, UT, United States of America

Clint William Philbrick