High temperature fracturing fluids and method of use

Details High temperature fracturing fluids and method of use High temperature fracturing fluids and method of use

2008-10-23

2010-12-28

Suchfield, George (Department: 3676)

Wells

Processes

Chemical inter-reaction of two or more introduced materials

C166S305100, C166S308500, C507S211000, C507S217000, C507S224000, C507S225000, C507S271000, C507S903000

Reexamination Certificate

active

07857055

ABSTRACT:
A treatment fluid for treating a subterranean formation is formed from an aqueous solution of a polysaccharide, a polyacrylamide, a crosslinking agent, which may be a Group 4 transition metal crosslinking agent, and less than 0.1% by weight of any clay component. In certain embodiments, the polyacrylamide may have an average molecular weight of from greater than 0.5 million to about 20 million and may be present in the fluid in an amount of from about 0.01% to 1% by weight of the fluid. A method of treating a subterranean formation penetrated by a wellbore may be carried out by introducing the treatment fluid into the formation through the wellbore. In certain embodiments, the treatment fluid may be introduced into a portion of the formation having a temperature of 120° C. or higher.

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