Compliantly coupled gauge pad system

摘要

A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and one or more compliantly coupled gauge pads. The head may include a first plurality of cutters coupled with an end of the head, and the head may be coupled with chassis. The one or more gauge pads may include a second plurality of cutters, and the one or more gauge pads may be movably coupled with the chassis.

主权项

1. A drill bit system for a drilling assembly for drilling a borehole through an earth formation, wherein the drill bit system comprises:
a chassis; a head coupled with the chassis and configured in use to rotate with the chassis around a longitudinal axis of the drill bit system in the borehole during a drilling procedure, wherein:
the head comprises a first plurality of cutters coupled with an end of the head and configured in use to cut into the earth formation when the head is rotated in the borehole; anda first set of gauge pads coupled circumferentially around the chassis and configured in use to rotate with the chassis and contact an inner-wall of the borehole during the drilling procedure, wherein:
the chassis or the chassis is compliantly coupled with the head;the compliant coupling of the chassis with the head comprises a cantilever coupling;the gauge pads extend laterally to a gauge of the head; andthe compliant coupling of the chassis with the head provides for lateral motion of the first set of gauge pads inwards away from the gauge of the head towards the longitudinal axis of the drill bit system during the drilling procedure.