公开(公告)号：US11549902B2

公开(公告)日：2023-01-10

申请号：US16999242

申请日：2020-08-21

Applicant: CHEVRON U.S.A. INC.

Inventor： Martha Rebecca Stokes ,  Zheng Yang ,  Prince E. Ezebuiro ,  Timothy B. Fischer

IPC: G01N27/22 ,  G01N33/24 ,  E21B49/00 ,  E21B49/02

Abstract: Provided herein are various embodiments of determining a cation exchange capacity of a rock sample. One embodiment of a method of determining a cation exchange capacity of a rock sample comprises equilibrating the rock sample to a relative humidity, performing a dielectric permittivity measurement on the rock sample at the relative humidity, and determining a cation exchange capacity of the rock sample based on the dielectric permittivity measurement. One embodiment of a method of determining a cation exchange capacity of a rock sample comprises receiving a dielectric permittivity measurement on the rock sample, and determining a cation exchange capacity for the rock sample based on the dielectric permittivity measurement of the rock sample and a relationship between cation exchange capacity and dielectric permittivity measurements for mineral mixtures corresponding to a range of cation exchange capacity values.

公开(公告)号：US20230266241A1

公开(公告)日：2023-08-24

申请号：US18003440

申请日：2020-07-01

Applicant: Chevron U.S.A. Inc.

Inventor： Kenneth Thomas Ratcliffe ,  Luke Morgan ,  Paul Montgomery ,  Timothy B. Fischer

IPC: G01N21/3563

CPC classification number: G01N21/3563 ,  G01N2021/3595

Abstract: The present disclosure concerns methods of identifying and quantifying constituent phases in rock samples based on spectroscopic measurements, methods of determining values of pyrolysis parameters for rock samples based on spectroscopic measurements, and methods of determining amounts of organic phases in rock samples based on spectroscopic measurements, as well as associated computer programs, computer-readable media, data carrier signals and data sets, and methods of compiling associated data sets for use in such methods.