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:
Nov. 16, 2004
Filed:
Feb. 14, 2002
Applicant:
Inventors:
William J. Benton, Magnolia, TX (US);
John A. Toups, Sugar Land, TX (US);
U. Roger Weems, Willis, TX (US);
Assignee:
Cabot Specialty Fluids, Inc., The Woodlands, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 7/02 ; C09K 7/06 ;
U.S. Cl.
CPC ...
C09K 7/02 ; C09K 7/06 ;
Abstract
A drilling fluid or mud is described wherein the drilling fluid contains at least one alkali metal formate or monovalent carboxylic acid salt. The drilling fluid preferably further contains at least one emulsifier or surfactant and at least one hydrocarbon-based fluid. The drilling fluids of the present invention can contain other conventional ingredients. The present invention permits drilling fluids to be essentially solids free due to the use of the alkali metal formate.