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. 31, 2013
Filed:
Nov. 18, 2010
Applicants:
Laurence Waino Mckeen, Sewell, NJ (US);
Michael Albert Hooper, Calgary, CA;
Inventors:
Laurence Waino McKeen, Sewell, NJ (US);
Michael Albert Hooper, Calgary, CA;
Assignee:
E I du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 43/24 (2006.01); E21B 36/00 (2006.01); F28F 13/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for treating a water stream produced in the recovery of heavy oil from geological formations. The process includes use of a heat exchange unit having at least one tube having a multi-layer coating. The multi-layer coating includes a melt flowable copolymer of tetrafluoroethylene adhered to the interior surface or exterior surface of the tube.