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:
May. 07, 1991
Filed:
Oct. 03, 1990
Applicant:
Inventors:
Donald L Whitfill, Ponca City, OK (US);
Lee E Whitebay, Ponca City, OK (US);
Assignee:
Conoco Inc., Ponca City, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166285 ; 166292 ;
Abstract
A method of forming a flow-restricting layer on a wellbore surface prior to cementing a casing string in the wellbore. The flow-restricting layer is formed by reaction of an injected fluid with divalent ions at and near the wellbore surface. The injected fluid is a composition containing a water-soluble polymer and one or more potassium salts.
Quick Actions:
Whitfill, Donald. (1991). Method for restricting gas influx during well cementing (U.S. Patent No. 5012869). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5012869
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile