Slip gripping mechanism with automatic segment alignment
A slip gripping mechanism is described for supporting a cylindrical conduit within the interior bore of a circumscribing conduit in a well bore, comprising: a cone retaining body received about the exterior of the cylindrical conduit; individual cone segments, each cone segment having a forward end, side edges and an engagement end, the engagement end being adapted to be engaged by the cone retaining body for supporting each of the cone segments in spaced circumferential locations on the cylindrical conduit, the side edges of adjacent cone segments defining a plurality of circumferentially spaced, longitudinally disposed slots; circumferentially spaced, vertically shiftable slips carried on the cylindrical conduit and initially spaced-apart from the cone segments, each slip having a forward end, side edges and an engagement end, the side edges being adapted to engage mating profiles formed in the longitudinally disposed slots whereby the slots form guideways for the slips for shifting the slips upwardly and outwardly between a set position engaging the circumscribing conduit and an unset position; setting means for effecting opposite relative motion between the cone segments and the slips; and indexing means provided on a selected one of the cone segments and the slips to facilitate alignment of the slips within the longitudinally disposed slots upon actuation of the setting means.
- Assignee:
- Hughes Tool Co., Houston, TX
- Patent Number(s):
- US 4750563
- OSTI ID:
- 6720007
- Resource Relation:
- Patent File Date: Filed date 24 Jul 1987
- Country of Publication:
- United States
- Language:
- English
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