Patent ID: 6695064
Filing Date: 2004-02-24
Classification: E21B

Abstract:
A slip spool for selectively supporting or snubbing a tubing string suspended in a wellbore comprising:a pressure containment spool adapted to be mounted to a wellhead, the spool having an axial passage to be aligned with the wellbore for permitting the tubing string to extend therethrough, and at least two radial passages extending through a side wall of the spool and communicating with the axial passage; at least two slip blocks slidably supported within the respective radial passages, each of the at least two slip blocks comprising a wedge-shaped ridge along an upper surface of a contoured inner end thereof so that the ridges engage a beveled recess formed in the weight-bearing shoulder of an adapter pin in the tubing string when the slip blocks are in the extended position; and means for moving the respective slip blocks between an extended position in which the slip blocks engage a component in the tubing string having a weight-bearing shoulder adapted to be engaged by the slip blocks, and a retracted position in which the slip blocks clear the axial passage of the spool.