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. 12, 2019
Filed:
Jun. 16, 2017
Conocophillips Company, Houston, TX (US);
Cenovus Energy Inc., Calgary, CA;
Amos Ben-Zvi, Calgary, CA;
Jason Abbate, Calgary, CA;
Thomas J. Wheeler, Houston, TX (US);
Siluni L. Gamage, Katy, TX (US);
Harbir Chhina, Calgary, CA;
Alexander E. Filstein, Calgary, CA;
Brent D. Seib, Calgary, CA;
ConocoPhillips Company, Houston, TX (US);
Cenovus Energy, Inc., Calgary, CA;
Abstract
A method and system in which foams are used (instead of, or in addition to, NCG) to maintain pressure in a mature chamber during blowdown operations of a SAGD process or other enhanced oil recovery process. The foam occupies the depleted void space within the mature chamber after injection ceases, maintaining pressure, and improving blowdown performance. This use of the foam in the method and system also improves the performance of less mature chambers that are being operated at higher pressure adjacent to the mature chamber in blowdown. Foaming agents, such as metal carbonates, bicarbonates, and hydroxides, surfactants or any other colloidal foams, aerosols, hydrosols, emulsions or dispersions can be utilized. The method and system can be utilized in conjunction with other known art, such as heat scavenging in the chamber, or enhanced oil recovery utilizing foams, to displace oil in the chamber.