Method of and apparatus for securing capillary tubing in a wellhead
AssigneeDouble-E Inc.
InventorRobert L. Heinonen
Life of this patent
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Abstract
A body having a bore therethrough for insertion of capillary tubing. A first means slidably coupled into the bore of the body frictionally restrains movement of the tubing by hydraulically engaging the periphery of the tubing with an elastomeric compressible sealing member. A second means slidably coupled into the bore of the body prevents movement of the tubing in the bore of the body by hydraulically actuating a plurality of slips to impart select engagement of the periphery of the tubing for its securement therein. A third means suspends the tubing in the bore of the body by manually engaging a plurality of suspension slips around the periphery of the tubing.
Claims20
A wellhead pack-off system for controlling the movement of small diameter tubing into and out of a well, comprising:
- a body having a bore therethrough for insertion of said tubing;
- first means slidably coupled into said bore of said body for frictionally restraining movement of said tubing by hydraulically engaging the periphery of said tubing with an elastomeric compressible sealing member;
- and
- second means slidably coupled into said bore of said body for preventing movement of said tubing in said bore of said body by hydraulically actuating a plurality of slips to impart select engagement or disengagement of the periphery of said tubing for its securement therein.
A method for controlling the movement of small diameter tubing into and out of a well, comprising the steps of:
- inserting said tubing into a body having a bore therethrough;
- frictionally restraining movement of said tubing by hydraulically engaging the periphery of said tube with an elastomeric compressible sealing member;
- and
- preventing movement of said tubing in said bore of said body by hydraulically actuating a plurality of slips to impart select engagement of the periphery of said tubing for its securement therein.
Dependencies are inferred from the claim text.