Organo-metallic compounds
First Claim
1. An organo-metallic compound comprising a reaction product of (a) a zirconium compound selected from the class consisting of zirconium halides and zirconium oxyhalides, (b) at least one selected from the group consisting of polyhydroxy alcohols and monosaccharides and (c) at least one alpha-hydroxy carboxylic acid.
2 Assignments
0 Petitions
Accused Products
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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Citations
26 Claims
- 1. An organo-metallic compound comprising a reaction product of (a) a zirconium compound selected from the class consisting of zirconium halides and zirconium oxyhalides, (b) at least one selected from the group consisting of polyhydroxy alcohols and monosaccharides and (c) at least one alpha-hydroxy carboxylic acid.
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18. A composition according to 17 in which the said solvatable polysaccharide is selected from the class consisting of galactomannan gums, glucomannan gums and cellulose derivatives.
Specification