Patent Number: 7,785,012

Title: Bearing arrangement

Abstract: A bearing arrangement comprises a first component 10 and a second component 12, bearings 14, 16 being provided to support one of the first and second components 10, 12 for rotation relative to the other of the first and second components 10, 12, a radial clearance 24 being provided between cylindrical surfaces of the first and second components 10, 12, fluid being supplied through the radial clearance 24 to lubricate the bearings 14, 16, wherein the cylindrical surface of at least one of the first and second components 10, 12 is shaped to define at least one pocket 30.

Inventors: Lee; Lawrence (Harwicke, GB), Plop; Andrei (Lechlade, GB)

Assignee: Schlumberger Technology Corporation

International Classification: E21B 10/24 (20060101)

Expiration Date: 8/31/12018