US 11,655,678 B2
Mud motor bearing assembly for use with a drilling system
Joseph Robert Munguia, Houston, TX (US); Hasib Uddin, Houston, TX (US); and John Hardin, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jul. 9, 2021, as Appl. No. 17/305,567.
Prior Publication US 2023/0011364 A1, Jan. 12, 2023
Int. Cl. E21B 4/00 (2006.01); E21B 7/06 (2006.01); E21B 4/02 (2006.01)
CPC E21B 4/003 (2013.01) [E21B 4/02 (2013.01); E21B 7/068 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A drilling system for drilling a borehole using a drilling fluid, the drilling system comprising:
a drill string;
a mud motor coupled to the drill string and comprising a driveshaft comprising a bore through which the drilling fluid is flowable;
a bearing assembly coupled to a downhole end of the mud motor and operable to support the driveshaft, the bearing assembly comprising:
bearings positioned circumferentially around a bore of the bearing assembly;
a fluid flowpath through the bearings and in fluid communication with the bore of the driveshaft to allow drilling fluid to divert from the bore and pass through the bearings; and
a choke assembly positioned in the fluid flowpath and operable to restrict a flow of the drilling fluid out of the fluid flowpath;
a rotary steerable system (“RSS”) operable to extend pads using drilling fluid not diverted through the fluid flowpath and flowing through the driveshaft and to the RSS; and
a drill bit rotatable by the driveshaft and steerable in a desired direction by the RSS.