US 11,940,398 B2
Method to determine relative thermal maturity from porosities measured by quantitative imaging on uncleaned samples and GRI porosity measured on crushed cleaned samples
Shannon Lee Eichmann, Katy, TX (US); David Jacobi, Spring, TX (US); and Poorna Srinivasan, Houston, TX (US)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by ARAMCO SERVICES COMPANY, Houston, TX (US)
Filed on Aug. 19, 2022, as Appl. No. 17/821,108.
Prior Publication US 2024/0060915 A1, Feb. 22, 2024
Int. Cl. E21B 41/00 (2006.01); E21B 44/00 (2006.01); E21B 49/02 (2006.01); G01N 23/2251 (2018.01); G01N 33/24 (2006.01)
CPC G01N 23/2251 (2013.01) [E21B 41/00 (2013.01); E21B 44/00 (2013.01); E21B 49/02 (2013.01); G01N 33/24 (2013.01); E21B 2200/20 (2020.05); E21B 2200/22 (2020.05); G01N 2223/418 (2013.01); G01N 2223/616 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of determining a thermal maturity model of a subterranean region of interest, comprising:
obtaining a plurality of rock samples for the subterranean region of interest;
for each of the plurality of rock samples, using a computer processor:
determining a first porosity value,
determining a second porosity value,
determining an amount of organic matter,
determining a thermal maturity index based, at least in part, on the first porosity value, the second porosity value and the amount of organic matter, and
determining, using a computer processor, the thermal maturity model based, at least in part, on the thermal maturity index for each of the plurality of rock samples.