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US 4,059,150 AGranted
Anchoring assembly
AssigneeBrown Oil Tools, Inc.
InventorPhillip H. Manderscheid
Life of this patent
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Abstract
Disclosed is an anchoring assembly for anchoring well equipment within a surrounding well conduit. In one form of the invention, the anchoring assembly is specifically described for use as an hydraulically set, retrievable liner hanger. A modified form of the invention describes the anchoring assembly employed with a seal to function as an hydraulically set, retrievable well packer.
Claims34
An anchoring assembly for use in a well conduit comprising:
- a. a longitudinally extending mandrel assembly;
- b. laterally movable gripping means carried by said mandrel assembly for lateral movement into anchoring engagement with said well conduit;
- c. setting means carried by said mandrel assembly and movable relative to said gripping means for moving said gripping means into anchoring engagement with said well conduit;
- d. locking means for retaining said gripping means in anchoring engagement with said well conduit, said locking means including:
- i. a first lock member movable longitudinally relative to said mandrel assembly;
- ii. a second lock member releasably fixed against longitudinal movement relative to said mandrel assembly;
- and
- iii. ratchet means connecting said first and second lock members together for permitting relative longitudinal movement between said first and second lock members in only one direction;
- iv. one of said lock members being radially resiliently biased toward the other of said lock members.
6 more elements
A well assembly for use in a well conduit comprising:
- a. a mandrel assembly;
- b. slip means carried about said mandrel assembly for selectively moving said slips from a radially retracted position to a radially extended position engaging said well conduit to thereby anchor said well assembly in place within said well conduit;
- c. setting means carried by said mandrel assembly and operable for moving said slip means into said radially extended position;
- d. locking means carried by said mandrel assembly for retaining said slip means in said radially extended position, said locking means including first and second telescoping tubular locking bodies non-wedgingly urged together to permit relative longitudinal movement between said first and second locking bodies in a direction permitting said radial slip extension and prevent the reverse longitudinal movement between such locking bodies to retain said slip means in said radially extended position.
1 more element
Dependencies are inferred from the claim text.