US 12,253,508 B2
Methods and systems for estimating properties of organic matter in geological rock formations
Bastian Christoph Eddie Sauerer, Sandsli (NO); Paul Ryan Craddock, Cambridge, TX (US); and Wael Abdallah, Dhahran (SA)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Appl. No. 17/907,409
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Mar. 9, 2021, PCT No. PCT/US2021/021486
§ 371(c)(1), (2) Date Sep. 27, 2022,
PCT Pub. No. WO2021/216210, PCT Pub. Date Oct. 28, 2021.
Claims priority of provisional application 63/015,247, filed on Apr. 24, 2020.
Prior Publication US 2023/0118696 A1, Apr. 20, 2023
Int. Cl. G01N 33/24 (2006.01); E21B 49/02 (2006.01); G01J 3/44 (2006.01); G01N 21/3563 (2014.01); G01N 21/65 (2006.01)
CPC G01N 33/24 (2013.01) [G01N 21/3563 (2013.01); G01N 21/65 (2013.01); G01N 33/241 (2013.01); E21B 49/02 (2013.01); G01J 3/44 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for characterizing organic matter in a geological rock formation, the method comprising:
a) obtaining a rock sample of the geological rock formation;
b) performing a Raman spectroscopy measurement on the rock sample to acquire a Raman spectrum of the rock sample; and
c) using at least one processor to perform operations that involve
i) analyzing the Raman spectrum of the rock sample to determine data characterizing at least one Raman spectral feature corresponding to the rock sample,
ii) inputting the data characterizing the at least one Raman spectral feature corresponding to the rock sample into a computation model that determines a value of at least one property of organic matter in the rock sample given the data characterizing the at least one Raman spectral feature as an input, wherein the at least one property of organic matter includes a density of kerogen in the rock sample, and
iii) storing or outputting or displaying the value of the property of organic matter in the rock sample.