Patent ID: 11933108
Assignee: BLACK DIAMOND OILFIELD RENTALS LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 8:
9. A device for a selectable hole trimmer, the device comprising:
a body having a central mud feed line configured to receive a drilling fluid at a bore pressure;
an intermediate sleeve sealingly affixed inside the body via a stop block;
a sliding sleeve sealingly slidable inside the intermediate sleeve to form a pressurized volume;
a radial compartment disposed in the body upbore or downbore of a cutter piston of a selectable hole cutter, the radial compartment fluidly connected to the central mud feed line via a compensating port and configured to house an actuator;
the actuator fluidly connected to the pressurized volume via a hydraulic port, wherein the actuator is configured to provide a pressure to the selectable hole cutter of the body via the hydraulic port and actuate a cutter piston of the selectable hole cutter to move relative to the body, wherein the cutter piston comprises one or more cutters; and
a controller configured to operate the actuator in response to a change of a monitored operation condition.