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. 08, 1991
Filed:
Aug. 31, 1990
Applicant:
Inventors:
Bobby E Hall, Houston, TX (US);
Clarita A Szemenyei, The Woodlands, TX (US);
D V Gupta, The Woodlands, TX (US);
Assignee:
The Western Company of North America, The Woodlands, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166278 ; 166300 ; 252-8551 ;
Abstract
This invention relates to the breaking of high viscosity aqueous fluids in which xanthan gum was used as a thickening agent. The invention provides a breaker system comprising two oxidizers, an organic acid, and two catalysts. The invention is particularly useful in oil field operations such as placement of a gravel pack or distribution of a proppant in a fractured formation.