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US 6,147,034 AGranted
Gelling agent for hydrocarbon liquid and method of use
AssigneeNalco/Exxon Energy Chemicals, L.P.
InventorsCruise K. Jones, Grahame N. Taylor
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Abstract
This invention is directed to a gelling agent composition comprising the reaction product of a high molecular weight gelling agent additive, a low molecular weight phosphate diester acid, and a Group II or Group III metal salt, to methods of preparing the gelling agent composition, to a gelled hydrocarbon liquid comprising the gelling agent composition and to a method of fracturing subterranean formations using the gelled hydrocarbon liquid.
Claims17
A gelling agent composition comprising the reaction product of:
- (a) a high molecular weight gelling agent additive comprising the reaction product of;
- (aa) a polyalkylene glycol having a molecular weight of 6,000 to 26,000 wherein the alkylene unit consisting of 3 to 4 carbon atoms optionally including copolymers or terpolymers having ethylene oxide links, with
- (ab) P.sub.2 O.sub.5 or a polyphosphate prepared by reacting a trialkylphosphate having 1 to 6 carbon atoms with P.sub.2 O.sub.5 ;
- (b) a low molecular weight phosphorous compound having the formula;
- ##STR9## wherein R.sub.2 and R.sub.3 are independently H, aryl or C.sub.1 -C.sub.24 alkyl;
- and
- (c) a Group II or Group m metal salt.
4 more elements
A method of preparing a gelled hydrocarbon liquid comprising
- (a) reacting a high molecular weight gelling agent additive comprising the reaction product of;
- (aa) a polyalkylene glycol having a molecular weight of 6,000 to 26,000 wherein the alkylene unit consisting of 3 to 4 carbon atoms optionally including copolymers or terpolymers having ethylene oxide links, with
- (ab) P.sub.2 O.sub.5 or a polyphosphate prepared by reacting a trialkylphosphate having 1 to 6 carbon atoms with P.sub.2 O.sub.5 ;
- with
- (ac) a low molecular weight phosphorous compound having the formula;
- ##STR15## wherein R.sub.2 and R.sub.3 are independently H, aryl or C.sub.1 -C.sub.24 alkyl;
- to form a ester or diester;
- and
- (b) adding the ester or diester to the hydrocarbon liquid to form a ester or diester/hydrocarbon liquid mixture;
- and
- (c) adding a ferric salt or aluminum salt to the ester or diester/hydrocarbon liquid mixture.
8 more elements
Dependencies are inferred from the claim text.