Method for fracturing high temperature subterranean formations

Details Method for fracturing high temperature subterranean formations Method for fracturing high temperature subterranean formations

1992-12-21

1994-04-26

Suchfield, George A.

Wells

Processes

Chemical inter-reaction of two or more introduced materials

166308, 252 8551, E21B 43267

Patent

active

053058321

ABSTRACT:
A method for hydraulic fracturing using crosslinked guar polymers wherein the high temperature viscosity and thermal stability of said polymers is maximized by adjusting the pH such that the cationic charge density of the polymer is at its maximum. These maximums occur for guar at a pH of 10.5 and for carboxymethylhydroxypropyl guar at a pH of 10.7.

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"Gravity Concentration to Hydrogen Energy" Kirk-Othmer Encyclopedia of Chemical Technology, Third Edition, vol. 12, pp. 58,62,63 Wiley-Interscience Publication, New York, USA.

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