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. 15, 1978
Filed:
Jan. 19, 1977
Applicant:
Inventors:
Walter R Dill, Duncan, OK (US);
Eugene A Elphingstone, Duncan, OK (US);
Assignee:
Halliburton Company, Duncan, OK (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
252 / ; 166282 ; 166283 ; 252 / ; 260 / ; 260 / ; 260 / ; 526306 ;
Abstract
A well acidizing or fracturing composition is prepared by adding to an aqueous acid solution or emulsion or fracturing composition, a cross-linked copolymer of a sulfonic acid-modified acrylamide and a polyvinyl cross-linking agent. The cross-linked copolymer functions as an effective fluid loss additive and/or diverting agent. From about 25 pounds to about 100 pounds of the additive is utilized per 1000 gallons of the aqueous acid solution or acid emulsion.