Release mechanism for a whipstock
AssigneeWeatherford Technology Holdings, LLC
InventorsJeffery Scott PRAY, Michael SMALLEY, Joshua Matthew KORF
Life of this patent
Estimating the term…
Abstract
A bottom hole assembly (BHA) includes a whipstock having a latch release mechanism and a milling tool having a plurality of blades and a lock mechanism. The BHA also includes a collar coupled to the whipstock and disposed about a portion of the milling tool, wherein the blades of the milling tool abut the collar. The milling tool is releasably coupled to the whipstock by the interaction of the latch release mechanism and the lock mechanism.
Claims20
A method of releasing a whipstock from a downhole tool, the method comprising:
- running a bottom hole assembly having the whipstock releasably attached to the downhole tool into a wellbore by engaging, between the whipstock and the downhole tool, a latch member of a latch release mechanism with a locking member of a lock mechanism;
- unblocking a fluid communication between a fluid communication line and an actuator piston coupled to the latch member by converting a switch assembly of the latch release mechanism from a first configuration to a second configuration;
- and
- disengaging the latch member from the locking member to release the whipstock from the downhole tool by moving the actuator piston in response to the fluid communication in the fluid communication line.
A method of releasing a first downhole tool from a second downhole tool, the method comprising:
- running a bottom hole assembly having the first downhole tool releasably attached to the downhole tool into a wellbore by engaging, between the first and second downhole tools, a latch member of a latch release mechanism with a locking member of a lock mechanism;
- unblocking a fluid communication between a fluid communication line and an actuator piston coupled to the latch member by converting a switch assembly of the latch release mechanism from a first configuration to a second configuration;
- and
- disengaging the latch member from the locking member to release the first downhole tool from the second downhole tool by moving the actuator piston in response to the fluid communication in the fluid communication line.
Dependencies are inferred from the claim text.