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. 21, 1993
Filed:
Oct. 30, 1992
Applicant:
Inventor:
Weldon M Harms, Duncan, OK (US);
Assignee:
Halliburton Company, Duncan, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166300 ; 166308 ;
Abstract
A method of treating a subterranean formation utilizing a first acidic crosslinked aqueous gel followed by a second alkaline crosslinked aqueous gel having a different crosslinking agent. The first fluid assists in breaking the viscosity of the second fluid upon completion of the treatment. The first fluid may contain a gasifiable fluid which will provide a gas assist to the return of the first and second fluids upon completion of the treatment.