MULTI-PIECE STACKED SEALING SYSTEM AND METHOD OF USING SAME
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United States of America Patent
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Issued Date -
May 19, 2011
app pub date -
May 7, 2010
filing date -
May 7, 2009
priority date (Note) -
Abandoned
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Abstract
Subsea wells have a variety of proprietary well head configurations that require sophisticated locking and sealing profiles that allow the well bore to be sealed off and the production of hydrocarbons to be safely controlled. A universal tubing hanger and lockdown assembly uses a sealing apparatus to annularly seal the well bore. When compressed, a multi-piece stacked sealing system employs rigid and elastic members to seal the well bore annulus in both the top-down and bottom-up directions. Top-down pressure containment is needed for appropriate well system testing and bottom-up pressure containment is necessary to control the internal pressure of the well.
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