Patent ID: 11879333
Assignee: NATIONAL OILWELL VARCO, L.P.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 21:
22. A method for forming a deviated borehole, comprising:
(a) transmitting torque between a rotor coupled to a drill string and a stator assembly of a drilling assembly to orient the drilling assembly in a predetermined angular orientation within a wellbore;
(b) actuating a bend adjustment assembly of the drilling assembly from a first position providing a first deflection angle between a longitudinal axis of a driveshaft housing and a longitudinal axis of a bearing mandrel coupled to the driveshaft housing to a second position that provides a second deflection angle between the longitudinal axis of the driveshaft housing and the longitudinal axis of the bearing mandrel, the second deflection angle being different from the first deflection angle;
(c) holding the drilling assembly in the predetermined angular orientation by increasing a rotational rate of the drill string from a first rotational rate to a second rotational rate that is greater than the first rotational rate; and
(d) restricting relative rotation between the rotor and the stator assembly by increasing the rotational rate of the drill string to a third rotational rate that is greater than both the first rotational rate and the second rotational rate.