Thrust face bearing structure for rolling cutter drill bit

Details Thrust face bearing structure for rolling cutter drill bit Thrust face bearing structure for rolling cutter drill bit

E - Fixed Constructions

21

B

255/78

E21B 10/22 (2006.01)

Patent

CA 1164448

ABSTRACT OF THE INVENTION A rolling cutter drill bit is disclosed having an improved thrust face bearing structure which utilizes alternating segments of at least two different bearing metals. The composite thrust face bearing structure disclosed has a first metal selec- ted for a low temperature operation, and at least one additional metal selected for high temperature operation.

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