Acidizing compositions for improved fluid performance
AssigneeHalliburton Energy Services, Inc.
InventorsAaron M. Beuterbaugh, Larry Steven Eoff
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Abstract
A method of stimulating a subterranean carbonate formation includes delivering a composition comprising a hydrophobically modified polymer, a phosphorylated alkyl amino polycarboxylic acid, and a base treatment acid into the subterranean formation; and contacting the subterranean carbonate formation with the composition to form conductive flowpaths in the subterranean carbonate formation. The method may further include producing hydrocarbons from the subterranean carbonate formation. A composition for stimulating a subterranean formation includes a hydrophobically modified polymer; a phosphorylated alkyl amino polycarboxylic acid; and a base treatment acid.
Claims6
A composition for stimulating a subterranean carbonate formation, comprising:
- between 0.05 and 1.0 wt. % of a hydrophobically modified polymer solution comprising a hydrophobically modified polymer selected from the group consisting of acrylamide/octadecyldimethylammoniumethyl methacrylate bromide copolymers, dimethylaminoethyl methacrylate/hexadecyldimethylammoniumethyl methacrylate bromide copolymers, dimethylaminoethyl methacrylate/vinyl pyrrolidone/hexadecyldimethylammoniumethyl methacrylate bromide terpolymers, and acrylamide/2-acrylamido-2-methylpropane sulfonic acid/2-ethylhexyl methacrylate terpolymers;
- between 1.8 and 3.0 wt. % of a phosphorylated alkyl amino polycarboxylic acid comprising N-phosphonomethyl iminodiacetic acid (PMIDA);
- and
- 15 wt. % of a base treatment acid comprising hydrochloric acid.
Dependencies are inferred from the claim text.