COMBINATION MUD MOTOR FLOW DIVERTER AND TILED BEARING, AND BEARING ASSEMBLIES INCLUDING SAME

摘要

A mud motor radial bearing, a combination flow diverter and integral radial mud motor bearing, and a mud motor bearing assembly including the combination. The flow diverter includes a body defining threaded box ends, a concentric longitudinal bore, a generally cylindrical outer surface, and a longitudinal axis. The longitudinal bore fluidly connects the first and second threaded box ends. The first threaded box end connects to a pin of a transmission of a mud motor rotor, and the second threaded box end connects to a pin of a mandrel. A portion of the generally cylindrical outer surface of the body in a region of the second threaded box end has bonded thereto a bearing material. The bearing material includes a plurality of tungsten carbide portions surrounded by a hard metal alloy matrix binder.

主权项

1. A mud motor radial bearing comprising:
a rotatable cylindrical steel support having a generally cylindrical outer surface, at least portions of the outer surface having bonded thereto a bearing material, the bearing material comprising a plurality of tungsten carbide portions surrounded by a hard metal alloy matrix, the hard metal alloy matrix comprising at least one carbide selected from carbides of chrome, carbides of boron, and mixtures thereof, the remainder of the hard metal alloy matrix comprising a binder metal selected from iron, cobalt, nickel, and mixtures thereof; and a portion of a stationary cylindrical bearing housing having a generally cylindrical inner surface against which an outer surface of the bearing material interfaces as the rotatable cylindrical steel support rotates.