| http://www.w3.org/ns/prov#value | - U.S. Pat. No. 5,417,287 to Smith et al. is directed to a method for fracturing a subterranean formation which involves adding to a hydrocarbon liquid (a) an organic phosphate of the formula HPO4RR??? where R is an alkyl or alkaryl group having from 6 to 18 carbon atoms and R??? is hydrogen or an aryl, alkaryl or alkyl group having from 1 to 18 carbon atoms; and (b) a ferric salt.
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