E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/127 (2006.01) E21B 43/26 (2006.01)
Patent
CA 2740281
A process for fracturing a lined well uses a packer assembly in a liner string that provides a cement-free segment and interface with the formation. The device has multiple packers with inflatable elements that are run as an integral assembly. After the liner assembly is positioned, cement is circulated into the assembly and wiped from the interior of the liner string into the annulus. Pressure within the liner string is elevated to initiate time delays for the radial inflation of the packer elements. The inflation radially and axially displaces the cement surrounding the elements before the cement sets. Each packer is subsequently opened to expose the frac ports in the packer directly to the formation for frac operations.
Radmanovich Donald J.
Seutter Daniel
1473706 Alberta Ltd.
Gowling Lafleur Henderson Llp
LandOfFree
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