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:
Feb. 25, 2014
Filed:
Nov. 01, 2011
Thomas W Willingham, Sugar Land, TX (US);
Robin Gupta, Houston, TX (US);
Mauro Lo Cascio, Houston, TX (US);
Peter Griffin Smith, Jr., Houston, TX (US);
Jung-gi Jane Shyeh, Houston, TX (US);
Thomas W Willingham, Sugar Land, TX (US);
Robin Gupta, Houston, TX (US);
Mauro Lo Cascio, Houston, TX (US);
Peter Griffin Smith, Jr., Houston, TX (US);
Jung-gi Jane Shyeh, Houston, TX (US);
ExxonMobil Upstream Research Company, Houston, TX (US);
Abstract
Methods and systems for enhanced oil recovery from a subterranean formation are provided. An exemplary includes separating fluid produced from the subterranean formation into a first fluid stream that includes an aqueous stream containing multivalent ions. At least a portion of the multivalent ions in the first fluid are removed to form a second fluid stream and the second fluid stream is injected into the subterranean formation. The first fluid stream and the second fluid stream have substantially the same interfacial tension with a hydrocarbon and substantially the same kinematic viscosity, and the second fluid stream has a total concentration of ions greater than about 100,000 ppm.