The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 1994
Filed:
Oct. 15, 1992
Dennis A Williams, Houston, TX (US);
James R Looney, Houston, TX (US);
Daniel S Sullivan, Houston, TX (US);
Brent I Bourland, Kingwood, TX (US);
John A Haslegrave, Abingdon, GB;
Paul J Clewlow, Faringdon, GB;
Niall Carruthers, Abingdon, GB;
Terence M O'Brien, New Hinksey, GB;
Exxon Chemical Patents Inc., Linden, NJ (US);
Abstract
A method of acidizing a subterranean formation with an acqueous acid solution wherein the acid solution contains corrosion inhibiting amounts of an amine derivative prepared by reacting an unsaturated carboxylic acid with (a) fatty amine or polyamine, or (b) a fatty amido amine or polyamine, or (c) a fatty imidazoline amine or polyamine. The derivative is characterized by the absence of primary amino groups, and preferably contains only tertiary amino groups.