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:
Apr. 07, 1987
Filed:
Feb. 01, 1985
Applicant:
Inventors:
Joseph J Dickert, Jr, Yardley, PA (US);
Israel J Heilweil, Princeton, NJ (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
252-85 ; 252-8511 ; 252-8514 ;
Abstract
A clay-thickened, water-based drilling fluid composition demonstrating enhanced stability at the elevated temperatures encountered in deep drilling oil and gas recovery operations in described. The drilling fluid composition comprises an aqueous clay dispersion and a dispersing amount of a polymer crosslinked through a polyvalent metal cation.