Millable bridge plug system
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United States of America Patent
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Sep 1, 2015
Grant Date -
Jun 19, 2014
app pub date -
Dec 19, 2012
filing date -
Dec 19, 2012
priority date (Note) -
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Abstract
A millable bridge plug system includes a mandrel, a sealing member, ring members, cone assemblies, and slip devices. The sealing member, ring members, cone assemblies and slip devices are positioned on and around the mandrel. Ring members abut against an upper end and a lower end of the sealing member. The other sides of the ring members abut against the cone assemblies, and the cone assemblies engage respective slip devices. The cone assemblies have surface interfaces contacting each of the slip devices so that pressure from the cone assemblies is exerted according to contact along the surface interfaces. Each surface interface can have a curvature or be a single radiused surface. Coordination of the surface interfaces control pressure to insure improved fixed positioning in the wellbore.
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