Hydrocarbon gelling compositions useful in fracturing formations
AssigneeEthox Chemicals, LLC
InventorGeorge Gregory Geib
Life of this patent
Estimating the term…
Abstract
The invention relates to compositions and methods for gelling liquid hydrocarbons by the introduction of certain phosphate esters, a crosslinking agent, and an enhancer. The enhancer of the present invention is preferably an oxyalkylated amine or a blend of an oxyalkylated amine with another amine or a non-nitrogen-containing component. Mixed phosphate esters containing an oxyalkylene group are useful in the practice of the invention. Gel-forming compositions for addition to liquid hydrocarbons, as well as methods for forming fracturing fluids, are encompassed. The present compositions and methods are an improvement in the field of hydrocarbon gelling, e.g., in fracturing formations, by providing more rapid gellation and greater viscosities.
Claims2
A synergistic phosphate ester composition useful in gelling compositions comprising mixtures of first and second phosphate esters, wherein said first and second phosphate esters comprise mixtures selected from the group consisting of a C2, C8, C10 alkyl phosphate, having 30.3% C2, 32.1% C8, and 37.6% C10 with a C2-C18 alkyl, C6 aryl ether phosphate having 30.6%C2, 21.6% C8, 25.4% C10, and 22.4% C6 aryl ether oxyalkylated with 1 mole of oxyethylene;
- a C2-C18 alkyl, C6 aryl ether phosphate having 31%C2, 25% C8, 30% C10, and 14% C6 aryl ether oxyalkylated with 1 mole of oxyethylene with a C2-C18 alkyl, C6 aryl ether phosphate having 29.8% C2, 26.3% C8, 30.9% C10, and 13.0% C6 aryl ether oxyalkylated with 1 mole of oxybutylene;
- and a C2, C8, C10 alkyl phosphate, having 30.3% C2, 32.1% C8, and 37.6% C10 with a C2-C18 alkyl, C6 aryl ether phosphate having 31%C2, 25% C8, 30% C10, and 14% C6 aryl ether oxyalkylated with 1 mole of oxyethylene.
Dependencies are inferred from the claim text.