Release mechanism for downhole tool
AssigneeBaker Hughes Incorporated
InventorsGerald Lynde, Tracey Tollefsbol, Steve Wilson
Life of this patent
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Abstract
A release mechanism for a downhole tool is actuated by radial movement of a locking member. The locking member provided as much as full circumferential support in the locked position and once released can be prevented from re-gripping the previously connected elements. Illustrative examples of the mechanism for radial movement for release comprise sleeves that expand and radially oriented pistons. Shear pins or collets are not used to hold the components together in the preferred embodiment. Internal pressure fluctuations before initiating the release sequence will not cause unwanted release. The mechanism is applicable to a variety of downhole tools and is illustrated in the context of a hydraulic release.
Claims20
A releasable locking mechanism for a downhole tool having a longitudinal axis, comprising:
- a first body;
- a second body;
- a lock to selectively hold said first and second bodies together;
- an actuator selectively movable radially with respect to said longitudinal axis and in contact with said lock.
Dependencies are inferred from the claim text.