Compositions – Leather or fur treating
Patent
1982-06-28
1985-08-13
Lechert, Jr., Stephen J.
Compositions
Leather or fur treating
166283, 166308, 1663051, C09K 300, E21B 4316, E21B 4326
Patent
active
045348707
ABSTRACT:
A transition metal complex useful as a crosslinking agent for high temperature, high pH, water-based fracturing fluids incorporating polysaccharide polymers is provided. The crosslinker comprises a zirconium/triethanolamine complex having a Zr/TEA molar ratio of between about 1/6.0 and 1/10.0, with 1/6.5 to 1/9.5 being preferred. Methods for preparing the zirconium/triethanolamine crosslinker are also provided. The methods comprise mixing effective amounts of either n-butyl zirconate or n-propyl zirconate with triethanolamine until a uniform blend is obtained. Further, an improved hydraulic fracturing fluid incorporating a polysaccharide polymer, buffer, crosslinker, pH adjusting agent and antioxidant is provided wherein the improvement is utilizing a zirconium/triethanolamine crosslinker. Improved methods for crosslinking fracturing fluids and for hydraulically fracturing well formations are also provided.
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Lechert Jr. Stephen J.
Locker Howard J.
The Western Company of North America
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