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:
Jul. 30, 2013
Filed:
Jan. 19, 2011
Applicants:
Ali A. Al-taq, Qatif, SA;
Ayman R. Nakhli, Dammam, SA;
Habeeb H. Haji, Qatif, SA;
Jaffar A. Saleem, Saihat, SA;
Inventors:
Ali A. Al-Taq, Qatif, SA;
Ayman R. Nakhli, Dammam, SA;
Habeeb H. Haji, Qatif, SA;
Jaffar A. Saleem, Saihat, SA;
Assignee:
Saudi Arabian Oil Company, Dhahran, SA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/27 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of preventing phase separation of a viscoelastic surfactant fluid or diverting agent due to ferric ions during matrix acidizing of an oil well which involves the injection of both citric acid and acetic acid which prevents the separation of the viscoelastic diverting agent/acid with ferric ions which avoids damage to well productivity and/or injectivity.