Patent ID: 9507047
Filing Date: 2016-11-29
CPC Classification: G01N,G01V

Claim Text:
1. A method for making estimates of subterranean rock properties, comprising: a) positioning a logging tool inside a well bore, c) measuring in situ well properties in the well interval in the well using the logging tool, d) estimating rock properties in the well for a location of the logging tool in the well interval using the measured in situ well properties, e) retrieving at least one rock sample from the well interval in the well, f) preparing said at least one rock sample for digital rock physics analysis, g) scanning the at least one rock sample to produce a digital image of said rock sample, h) segmenting said digital image of said rock sample to define pores and grains in said digital image, i) adjusting said digital image to represent said rock properties at in-situ conditions using said well properties, j) calculating rock properties from said adjusted digital image of said rock sample using said in situ fluid properties, k) comparing said rock properties at the well interval where the logging tool was positioned and said rock properties from said digital image of said rock sample using said in situ fluid properties, l) positioning a logging tool inside a well bore of a similar formation as that of the wellbore of step a), m) repeating step c) for measuring in situ well properties using the logging tool used in step l), n) estimating rock properties in the well for a location of the logging tool used in step l) in a well interval using the measured in situ well properties from step m), and o) correcting the estimates of rock properties from step n) during the logging process using rock properties or rock property trends determined from said adjusted digital image in step j).