A method for drilling a subterranean wellbore includes deploying a drill string in the wellbore, the drill string including a drill bit and a steerable drilling motor. The drill string is automatically rotated at the surface back and forth between first and second opposing rotational directions, rotating in the first direction until a first torque limit is exceeded and rotating in the second direction until a second torque limit is exceeded. A toolface of the steerable drilling motor and a differential pressure across the steerable drilling motor are measured while automatically rotating the drill string. A surface processor processes the measured toolface and differential pressure in combination with a target toolface and a target differential pressure to compute new first and second torque limits. The automatic rotating is repeated using the new first and second torque limits.
AUTOMATED DIRECTIONAL DRILLING SYSTEM AND METHOD USING STEERABLE DRILLING MOTORS
03.06.2021
Patent
Elektronische Ressource
Englisch
IPC: | B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet |
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