Rotation release latch for a wellbore tool

Wells – Expansible anchor or casing – Liner hanger

Patent

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Details

166125, 166216, E21B 2300

Patent

active

053119410

ABSTRACT:
A rotation release apparatus is provided for use in a wellbore tool to selectively couple a first wellbore tool member to a second wellbore tool member until the wellbore tool is lowered to a selected depth within the wellbore. The rotation release apparatus includes a coupling member secured to the first wellbore tool member, and a latch member secured to the second wellbore member. A cam member is secured to the coupling member to release the latch member from the coupling member when the wellbore tool is rotated about a longitudinal axis. The rotation release latching apparatus may be operated to couple the latch member to the coupling member by axial movement of the wellbore tool along a longitudinal axis.

REFERENCES:
patent: 4690220 (1987-09-01), Braddick
patent: 4750563 (1988-06-01), Baugh
patent: 4811785 (1989-03-01), Weber
patent: 4926936 (1990-05-01), Braddick

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