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:
Oct. 09, 1984
Filed:
May. 08, 1981
Applicant:
Inventors:
Roy F House, Houston, TX (US);
Lonnie D Hoover, Chappell Hill, TX (US);
Assignee:
NL Industries, Inc., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; E21B / ;
U.S. Cl.
CPC ...
252 / ; 252 / ;
Abstract
A method of producing a well servicing fluid containing zinc bromide in which an activated hydroxyethyl cellulose is either admixed with a zinc bromide solution containing above about 30% by weight zinc bromide, or, in the alternative, is admixed with a non-zinc bromide containing solution to produce a viscosified solution which is then admixed with a zinc bromide containing solution.