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:
Jan. 02, 2018
Filed:
Apr. 14, 2017
Applicant:
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Inventors:
Badr Salem Ba Geri, Dhahran, SA;
Mohamed Ahmed Mahmoud, Dhahran, SA;
Assignee:
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 21/00 (2006.01); C09K 8/50 (2006.01); C09K 8/035 (2006.01); C09K 8/36 (2006.01);
U.S. Cl.
CPC ...
C09K 8/50 (2013.01); C09K 8/035 (2013.01); C09K 8/36 (2013.01); E21B 21/003 (2013.01); C09K 2208/10 (2013.01); C09K 2208/30 (2013.01);
Abstract
A drilling fluid system using retarded acid systems such as gelled acid (VES or polymer) and/or emulsified acid to drill carbonate formations (calcite and dolomite). Foamed acid may be used in low abnormal pressure carbonate reservoirs. The drilling fluid system permits drilling a target hydrocarbon-producing formation with zero-invasion of the drilling fluid system. A method for using the drilling fluid system for fluid loss control during drilling operations.