Method of and apparatus for dual packing of capillary tubing in a wellhead
AssigneeDouble-E Inc.
InventorsRobert L. Heinonen, Timothy Marshall
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 a compressible elastomeric 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 manually engaging the periphery of the tubing with a compressible elastomeric sealing member. 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.
Claims21
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 hydraulicly engaging the periphery of said tubing with an upper compressible elastomeric sealing member;
- and
- second means slidably coupled into said bore of said body for frictionally restraining movement of said tubing by manually engaging the periphery of said tubing with a lower compressible elastomeric sealing member 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;
- hydraulically engaging the periphery of said tube with an upper compressible elastomeric sealing member to frictionally restraining movement of said tubing;
- and
- manually engaging the periphery of said tube with a lower compressible elastomeric sealing member frictionally restraining movement of said tubing
Dependencies are inferred from the claim text.