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:
Aug. 07, 1990
Filed:
Nov. 23, 1988
Applicant:
Inventor:
William H Smith, Walters, OK (US);
Assignee:
Halliburton Company, Duncan, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ; E21B / ;
U.S. Cl.
CPC ...
252-8551 ; 252-8554 ; 2523153 ; 1061971 ;
Abstract
The present invention relates to a method for treating a well bore and the surrounding subterranean formation. A non-reducing sugar is admixed with a polysaccharide polymer and crosslinking agent in aqueous liquids to subsequently initiate viscosity reduction of the crosslinked polymer. The non-reducing sugar provides a means for obtaining time-controlled viscosity reduction at formation temperatures.