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:
Jul. 25, 1978
Filed:
Jun. 23, 1977
Applicant:
Inventors:
Robert C Ransom, Placentia, CA (US);
LeRoy W Holm, Fullerton, CA (US);
Assignee:
Union Oil Company of California, Brea, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166252 ; 73152 ;
Abstract
A method for determining the fluid saturation, for example the hydrocarbon saturation, the residual oil saturation or water saturation, of a reservoir following a secondary recovery operation wherein there is injected into the reservoir via a well first hydrocarbons and then a secondary recovery medium to return the portion of the reservoir in the immediate vicinity of the well to the same fluid saturation as exists in the bulk of the reservoir. The reservoir is then logged with a logging instrument to determine the hydrocarbon saturation, gas saturation, residual oil and/or water saturation.