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US 6,149,693 AGranted
Hydrocarbon gels useful in formation fracturing
AssigneeEthox Chemicals, LLC
InventorGeorge Gregory Geib
Life of this patent
Estimating the term…
Abstract
Liquid hydrocarbons are gelled by the introduction of a phosphate ester and a crosslinking agent. Gelling times and viscosities are improved through the use of an enhancer which is, preferably, an oxyalkylated amine or a blend of an oxyalkylated amine with another amine or a non-nitrogen-containing component. Preferred phosphate esters are ether phosphate esters.
Claims18
A gelling composition for fracturing formations comprising:
- a) a hydrocarbon liquid capable of gellation, b) a phosphate ester, c) a crosslinking agent, and d) an enhancer comprising i) an oxyalkylated amine selected from the group consisting of ethoxylated alkyl amines, propoxylated alkyl amines, and butoxylated alkyl amines;
- ii) an oxyalkylated dialkyl amine selected from the group consisting of ethoxylated dialkyl amines, propoxylated dialkyl amines, and butoxylated dialkyl amines, or mixtures thereof.
A gelling composition for fracturing formations comprising:
- a) a hydrocarbon liquid capable of gellation, b) a phosphate ester, c) a crosslinking agent, and d) an enhancer comprising an oxyalkylated diamine.
A gelling composition for fracturing formations comprising:
- a) a hydrocarbon liquid capable of gellation, b) a phosphate ester, c) a crosslinking agent, and d) an enhancer comprising an oxyalkylated aryl amine.
Dependencies are inferred from the claim text.