Method of determining reservoir properties and quality with multiple energy X-ray imaging

摘要

A method of evaluating a reservoir includes a multi-energy X-ray CT scan of a sample, obtaining bulk density and photoelectric effect index effect for the sample, estimation of at least mineral property using data obtained from at least one of a core gamma scan, a spectral gamma ray scan, an X-ray fluorescence (XRF) analysis, or an X-ray diffraction (XRD) analysis of the sample, and determination of at least one sample property by combining the bulk density, photoelectric effect index, and the at least one mineral property (e.g., total clay content). Reservoir properties, such as one or more of formation brittleness, porosity, organic material content, and permeability, can be determined by the method without need of detailed lab physical measurements or destruction of the sample. A system for evaluating a reservoir also is provided.

主权项

1. A method of evaluating a reservoir, comprising:
(a) performing a multi-energy X-ray CT scan of a sample at a depth interval at two or more different energy levels; (b) obtaining bulk density and photoelectric effect index for the sample using CT values obtained for voxels in the sample from the multi-energy X-ray CT scan; (c) estimating at least one mineral property using data obtained from at least one of a core gamma scan, a spectral gamma ray scan, an X-ray fluorescence (XRF) analysis, or an X-ray diffraction (XRD) analysis of the sample; and (d) determining at least one sample property by combining the bulk density, photoelectric effect index, and said at least one mineral property.