Organo-metallic compounds
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United States of America Patent
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Feb 18, 1992
Issued Date -
N/A
app pub date -
Dec 1, 1989
filing date -
Dec 16, 1988
priority date (Note) -
Expired
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Abstract
An organometallic compound which is the reaction product of (a) a zirconium halide or oxyhalide, (b) a polyol and (c) an alpha-hydroxy acid is claimed. The preferred polyol is sorbitol and preferred alphahydroxy acids are citric, malic or lactic acid. The compounds find use as cross-linking agents in fracturing fluids employed in the hydraulic fracturing of oil or gas-containing subterranean strata. The claimed compounds can be used to produce a slow or delayed gel formation in such fluids.
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