SYSTEMS AND METHODS FOR IMPROVING DIRECT NUMERICAL SIMULATION OF MATERIAL PROPERTIES FROM ROCK SAMPLES AND DETERMINING UNCERTAINTY IN THE MATERIAL PROPERTIES

摘要

A testing system can analyze a 3D digital volume of a material sample. The testing system can define several test volumes with each test volume including a different numbers of voxels. The test volumes can define the size of portions of the 3D digital volume to analyze. For each test volume, the testing system can acquire two adjacent portions of 3D digital volume that are the size of the test volume currently being analyzed. The testing system can calculate a petrophysical property value for the two adjacent portions of the 3D digital volume and can calculate the difference value between the two adjacent portions of the 3D digital volume. The testing system can repeat the process for the different test volumes. The testing system can plot the mean difference values for the different test volumes. The testing system can analyze the plot to determine a representative elementary volume that meets a predefined difference value.

主权项

1. A method for analyzing material samples to determine material properties, the method comprising:
receiving a three-dimension (3D) digital volume, wherein the 3D digital volume is a representation of a material sample; defining a plurality of test volumes, wherein each of the plurality of test volumes comprises a number of voxels, and wherein the number of voxels for each of the plurality of test volumes is different; determining, for each of the plurality of test volumes, a difference value between a material property for two adjacent test volumes from the 3D digital volume, each adjacent test volume comprising the number of voxels associated with the test volume; plotting the difference value for each of the plurality of test volumes; and determining, from the plot, a representative elementary volume (REV) for 3D digital volume.