Patent ID: 7516791
Filing Date: 2009-04-14
Classification: E21B

Abstract:
1. A system for isolating a section of a wellbore having fluid under pressure, comprising: (a) a wellhead positioned over the wellbore; (b) a lubricator positioned on the wellhead, the lubricator controlling fluid pressure in the wellbore; (c) a conveyance device conveyed into the wellbore via the lubricator and the wellhead; (d) a first anchor adapted to sealingly engage a wellbore tubular; (e) a second anchor spaced axially apart from the first anchor, the second anchor configured to sealingly engage a surface of the wellbore tubular; and (f) a plurality of interlocking sealing elements connecting the first anchor to the second anchor, the plurality of interlocking sealing elements having no portion sealingly engaging the wellbore tubular; and wherein the first anchor, the second anchor and the plurality of interlocking sealing elements are each configured to be separately conveyed into the wellbore with the conveyance device.