HIGH TEMPERATURE AQUEOUS-BASED ZIRCONIUM CROSSLINKING COMPOSITION AND USE
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United States of America Patent
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Issued Date -
May 7, 2009
app pub date -
Oct 31, 2008
filing date -
Nov 2, 2007
priority date (Note) -
Abandoned
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Abstract
A fracturing fluid or crosslinking composition suitable for use at high temperature (275-340° F., 135-171° C.) comprising (a) an aqueous liquid, (b) brine, (c) a thermal stabilizer, (d) a non-delaying alkaline buffer sufficient to provide a pH less than 9, (e) an organic acid, (f) hydroxypropyl guar and (g) a zirconium crosslinking agent. The composition is useful as a fracturing fluid in oil field applications, for example, for hydraulically fracturing a subterranean formation or selectively plugging a permeable zone or leak in a subterranean formation.
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