Patent ID: 8728990

Claim:
A fracturing composition comprising: (a) a hydrocarbon liquid, (b) about 0.6 wt. % to about 0.9 wt. % based on a weight of the hydrocarbon liquid, of a mixture of phosphate esters, said esters selected from the group consisting of: monoester PO(OR 1 )(OH) 2 , PO(OR 2 )(OH) 2 , diester PO(OH)(OR 1 ) m (OR 2 ) 2−m where m=0, 1, or 2; triester PO(OH)(OR 1 ) n (OR 2 ) 3−n where n=0, 1, 2 or 3; and phosphoric acid H 3 PO 4 wherein R 1 and R 2 each have 2 to 18 carbon atoms; and (c) about 0.2 wt. % to about 0.8 wt. % based on the weight of the hydrocarbon liquid of an acidic polynuclear aluminum compound having an Al:Cl mole ratio ranging from about 1.40:1 to about 2.2:1, and wherein the acidic polynuclear aluminum compound is not partially or completely neutralized, wherein said fracturing composition is characterized by a substantially constant viscosity value.