Wells – Processes – Placing fluid into the formation
Reexamination Certificate
2008-04-16
2010-06-01
Bagnell, David J (Department: 3672)
Wells
Processes
Placing fluid into the formation
C166S279000, C166S280100, C166S300000
Reexamination Certificate
active
07726404
ABSTRACT:
A method of treating a shale-containing subterranean formation penetrated by a wellbore is accomplished by forming a carbon dioxide treatment fluid having a viscosity of less than about 10 mPa-s at a shear rate of about 100 s−1. The carbon dioxide treatment fluid is introduced into the formation through the wellbore at a pressure above the fracture pressure of the formation. In certain embodiments, the treatment fluid may be comprised of from about 90% to 100% by weight carbon dioxide and may contain a proppant. A method of treating hydrocarbon-bearing, shale-containing subterranean formation penetrated by a wellbore may also be carried out by forming a carbon dioxide treatment fluid and introducing the carbon dioxide treatment fluid into the formation through the wellbore at a pressure above the fracture pressure of the formation. The formation being treated may have a permeability of less than 1 mD.
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Kubala Gregory
MacKay Bruce A.
Bagnell David J
Cate Dave
Loikith Catherine
Nava Robin
Rzaniak Martin
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