Wells – Processes – Placing fluid into the formation
Reexamination Certificate
2006-10-25
2010-10-12
Thompson, Kenneth (Department: 3672)
Wells
Processes
Placing fluid into the formation
C166S177500
Reexamination Certificate
active
07810570
ABSTRACT:
A shock tool is adapted to a bottom hole tool assembly for isolating a zone in a subterranean formation accessed by a wellbore. Fracturing fluid such as nitrogen is accumulated at fracturing pressures uphole of the shock tool for subsequent and rapid release to the formation. The tool assembly can be suspended from a conveyance string in which fluid is accumulated for shock release through a valve of the shock tool and through an injection tool to the zone isolated by the injection tool. After a first zone is shocked, the tool assembly can be moved to a new zone, or multiple shocks can be applied cyclically at the selected zone.
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Andreychuk Mark T.
Collins James
Andrews David
Calfrac Well Services Ltd.
Goodwin Sean W
Thompson Kenneth
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