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:
Apr. 15, 2003
Filed:
Jul. 07, 2000
Applicant:
Inventor:
Egil Sunde, Sandnes, NO;
Assignee:
Den norske Stats oljeselskap A.S., Stavanger, NO;
Primary Examiner:
Int. Cl.
CPC ...
E21B 4/322 ;
U.S. Cl.
CPC ...
E21B 4/322 ;
Abstract
Air is introduced into the injection water for microbial enhanced oil recovery. The injection water is passed through an ejector where it is entrained and the oxygen subsequently dissolves in the water.