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:
Sep. 14, 1982
Filed:
Jul. 14, 1980
Roger L Smith, Tulsa, OK (US);
Robert P Murphy, Bixby, OK (US);
Standard Oil Company (Indiana), Chicago, IL (US);
Abstract
This invention relates to determining the movable oil saturation in underground rock reservoir by use of a log-inject-log technique. The formation rock adjacent to the wellbore is prepared such that the saturation conditions are representative of those in the interwell area. A pulsed neutron log is then run. A crude oil is injected into the formation. A second pulsed neutron log is then run. A chlorinated crude oil is injected into the formation to displace the previously injected crude oil. A third pulsed neutron log is then run. A salt water of known salinity is then injected into the well to displace a portion of the chlorinated crude oil and all of the formation water. A fourth pulsed neutron log is then run. Fresh water is then injected into the formation to displace the injected salt water. A fifth pulsed neutron time log is then run. These five logs are then used to determine the reservoir characteristics.