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:
Dec. 04, 2018
Filed:
May. 31, 2013
Applicant:
M-i L.l.c., Houston, TX (US);
Inventor:
Shaohua Lu, Katy, TX (US);
Assignee:
M-I L.L.C., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/72 (2006.01); C09K 8/52 (2006.01); E21B 37/00 (2006.01); C09K 8/60 (2006.01);
U.S. Cl.
CPC ...
C09K 8/52 (2013.01); C09K 8/602 (2013.01); E21B 37/00 (2013.01);
Abstract
Described is a method including emplacing a breaker fluid into a wellbore drilled with an oil-based drilling fluid that forms an oil-based filter cake. The breaker fluid includes a non-oleaginous base fluid and a surfactant blend comprising an alkyl polyglycoside, an ethoxylated alcohol, and a triethyleneglycol monobutyl ether. The method further includes allowing the breaker fluid to break the oil-based filter cake.