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. 25, 1984
Filed:
Dec. 28, 1982
Applicant:
Inventor:
Israel J Heilweil, Princeton, NJ (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; E21B / ;
U.S. Cl.
CPC ...
252 / ; 252 / ; 524548 ;
Abstract
There is provided an aqueous brine fluid having a pH of less than about 5 and containing a high salt concentration and a basic N-heterocyclic polymer or copolymer such as polyvinyl pyridine which serves to increase the viscosity of the fluid, particularly at elevated temperatures of above about 300.degree. F. These fluids are particularly useful as drilling fluids for the drilling of oil and gas wells.