Metal-to-metal seal for oil well tubing string

Details Metal-to-metal seal for oil well tubing string Metal-to-metal seal for oil well tubing string

1992-04-24

1993-05-18

Britts, Ramon S.

Wells

Above ground apparatus

Releasable seal or cleaner disengaged by projection on inner...

166118, 277236, E21B 3310

Patent

active

052112268

ABSTRACT:
A straight bore metal-to-metal seal for connecting a tubing string to the mandrel of a well packer has a radially deflectable sealing member compressed between the internal bore surface of a tubular seal receptacle and the tubular body portion of a seal mandrel. The seal receptacle has a radially stepped sealing surface which is engaged by the deflectable sealing member in the operative sealing position. The inside bore of the deflectable sealing member is positively sealed against the outside surface of the seal mandrel by a pair of metal V-rings. A positive seal is also produced by engagement of the deflectable sealing member against the radially stepped bore of the seal receptacle. The deflectable sealing member is loaded by radial compression forces produced as a result of interference engagement of the deflectable sealing member against the radially stepped bore.

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