Patent ID: 9410398
Filing Date: 2016-08-09
CPC Classification: E21B

Claim Text:
1. A downhole system comprising: a tubular having a wall with at least one port there through; at least one member arranged to cover the at least one port in a compressed condition thereof, and configured to at least partially displace cement pumped on an exterior of the tubular in a radially expanded condition of the at least one member; and, at least one sleeve engaged within the tubular and movable between a first position preventing fluid communication between an interior of the tubular and the at least one port during radial expansion of the at least one member, to a second position to expose the at least one member to the interior of the tubular after the cement has at least substantially cured; wherein the at least one member degrades a strength of cured cement in an area occupied by the at least one member.