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. 10, 1992
Filed:
Feb. 26, 1991
Bernard A Baldwin, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
A method is provided for determining the relative wettability of a sample of a porous media with respect to a first liquid and a second liquid. The method includes the steps of providing the sample at a partially saturated state with respect to the first liquid; obtaining a first nuclear magnetic resonance (NMR) parameter value for the partially saturated sample; exposing the partially saturated sample to the second liquid for a predetermined period of time, wherein the second liquid is treated with a paramagnetic species such that the presence of the second liquid in the sample does not substantially affect the NMR signal response of the sample; obtaining a second NMR parameter value for the sample after exposure to the second liquid; and determining the relative wettability by comparing the first and second NMR parameter values.