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US 4,382,003 AGranted
Breaker system for hydraulic fracturing fluids
AssigneeThe Dow Chemical Company
InventorsClare H. Kucera, Richard B. Connell
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Abstract
Aqueous compositions having properties making them suitable for use as a hydraulic fracturing fluids are disclosed. These compositions comprise (a) an uncrosslinked aqueous polysaccharide solution, and (b) a 4,4'-thiodiphenol. Ingredient (b) acts as a "breaker" and causes the composition to lose viscosity at a controlled rate.
Claims10
A formulated fluid composition having properties making it suitable for use as a hydraulic fracturing fluid, said composition comprising:
- (a) a viscosity-increasing amount of an uncrosslinked aqueous polysaccharide solution, and
- (b) a 4,4'-thiodiphenol corresponding to the formula ##STR2## wherein each R is hydrogen or an inert substituent, said 4,4'-thiodiphenol being present in amounts sufficient to break the viscosity of said composition.
Dependencies are inferred from the claim text.