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:
Mar. 05, 2024
Filed:
Apr. 06, 2021
Vinegar Technologies Llc, Bellaire, TX (US);
William Marsh Rice University, Houston, TX (US);
Eva Vinegar, Bellaire, TX (US);
Philip M. Singer, Richmond, TX (US);
George J. Hirasaki, Bellaire, TX (US);
Zeliang Chen, Houston, TX (US);
Xinglin Wang, Houston, TX (US);
Harold J. Vinegar, Bellaire, TX (US);
Vinegar Technologies LLC, West Lake Hills, TX (US);
Abstract
The following invention is used for determining the relative permeability of a fluid in a rock for three different phases: water, oil, and gas, in both conventional and unconventional formations. The permeability of a phase describes how much it can flow in porous media given a pressure gradient and is useful in evaluating reservoir quality and productivity. The following invention is a method to determine the three-phase relative permeabilities in both conventional and unconventional formations using NMR restricted diffusion measurements on core with NMR-active nuclei, combined with centrifugation of the core. In addition, the tortuosity, pore size (surface-to-volume ratio), fluid-filled porosity, and permeability is determined for each of the three phases in a rock.