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:
Mar. 31, 1992
Filed:
Dec. 03, 1990
Applicant:
Inventors:
Douglas G Naae, Houston, TX (US);
Lawrence E Whittington, Katy, TX (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
252-8551 ; 2528554 ; 2523153 ; 523130 ; 166274 ; 166275 ; 166273 ; 166308 ;
Abstract
The invention is an aqueous shear-thickening composition comprising in one embodiment about 0.2% to about 1% by weight of hydroxypropyl cellulose having an average molecular weight between about 1,000,000 and about 1,300,000, about 0.1% to about 0.7% by weight of an alkali metal dodecyl sulfate in a ratio of about 2.5:1 to about 1.5:1 hydroxypropyl cellulose to alkali metal dodecyl sulfate, and water containing less than about 2000 ppm TDS.