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:
Nov. 27, 1984
Filed:
Aug. 25, 1982
Applicant:
Inventors:
Nancy S Sherwood, Coraopolis, PA (US);
Christine A Costello, Coraopolis, PA (US);
Gary F Matz, Pitcairn, PA (US);
Assignee:
Calgon Corporation, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166274 ; 166294 ; 252 / ;
Abstract
The instant invention is directed to a method of recovering oil and/or gas from a subterranean formation which is penetrated by a well bore, and for reducing the concomitant production of reservoir water therefrom comprising injecting into said formation through said well bore an aqueous treating solution or emulsion containing a polyampholyte prepared from: