Seal assembly for well tools
This patent describes a tubing seal assembly adaptable to be stabbed into the bore of a well packer anchored in a subterranean oil or gas well upon insertion of a tubing string into the well bore to establish fluid communication through the packer, comprising: means for attaching the tubing seal assembly to the tubing string; a tubular member extending from the attaching means; seal means disposed about the periphery of the tubular member; a constraining sleeve shearably attached to the tubular member and defining an annular cavity around the tubular member; seal means inserted in the cavity. The volume of the cavity is at least equal to the unrestrained volume of the seal means at the surface of the well, and less than the unrestrained volume of seal means at the subsurface location of the packer; engagable surfaces respectively provided on the packer and the constraining sleeve to move the constraining sleeve upwardly relative to the tubular member as the seal means is inserted in the packer bore. This seals the integrity the bore of the well packer upon insertion of the tubing seal assembly into the well packer bore without damaging the seal means; and means for continuously damping the upward movement of the constraining sleeve relative to the tubular member.
- Assignee:
- Baker Oil Tools, Inc., Orange, CA
- Patent Number(s):
- US 4612985
- OSTI ID:
- 5196897
- Country of Publication:
- United States
- Language:
- English
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