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. 01, 2008
Filed:
Mar. 23, 2006
Applicants:
Sandra L. Berry, Tomball, TX (US);
Brian Beall, Spring, TX (US);
Inventors:
Sandra L. Berry, Tomball, TX (US);
Brian Beall, Spring, TX (US);
Assignee:
BJ Services Company, Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 37/00 (2006.01); C09K 8/52 (2006.01);
U.S. Cl.
CPC ...
Abstract
A biodegradable water-in-synthetic oil base emulsion, effective in the removal of filter cakes, consists of an external phase of a surfactant emulsified in a paraffinic base oil. The emulsion is particularly effective in breaking-down the interfacial rheological properties of oil base mud and synthetic oil base mud filter cakes and acts as a demulsifier to break the water-in-oil emulsions present in such oil base and synthetic oil base muds.