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US 2002/0170710 A1Published application
Packer releasing system
AssigneeBaker Hughes Incorporated
InventorJames C. Doane
Life of this patent
Estimating the term…
Abstract
A release system for a packer is disclosed. The release ring is minimally exposed in the wellbore and is actuated by a release tool, which comprises a collet and cone with a relative movement feature. In the preferred embodiment, the release ring has alternating cuts and a built in radially outward bias. The ring is held in locked position by bands, which are broken by the action of the releasing tool.
Claims23
A release mechanism for a downhole packer, comprising:
- a mandrel, having a passage therethrough;
- a setting assembly selectively engageable mechanically or hydraulically to actuate a sealing element and a slip upon relative movement between said mandrel and said setting assembly;
- a lock to selectively hold said sealing element and said slip when actuated;
- said mandrel resisting an opposed force on said setting assembly through a first sleeve selectively engageable to a second sleeve with a releasing ring, said releasing ring selectively disengaging said first and said second sleeves upon being radially displaced.
1 more element
A mechanically or hydraulically set packer release mechanism for slips and a sealing element, comprising:
- a mandrel defining a passage therethrough and further comprising a first and a second sleeve selectively retained to each other by a releasing ring which is radially displaceable.
Dependencies are inferred from the claim text.