US 11,965,839 B2
Method and system for acquiring elastic modulus of rock containing sedimentary rhythms
Beixiu Huang, Beijing (CN); Lihui Li, Beijing (CN); and Xiao Li, Beijing (CN)
Assigned to INST. OF GEOL. & GEOPHYS., CN ACAD. OF SCIENCES, Beijing (CN)
Filed by INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES, Beijing (CN)
Filed on Apr. 4, 2022, as Appl. No. 17/712,927.
Claims priority of application No. 202110901612.8 (CN), filed on Aug. 6, 2021.
Prior Publication US 2023/0041637 A1, Feb. 9, 2023
Int. Cl. G01N 23/223 (2006.01); G01N 33/24 (2006.01)
CPC G01N 23/223 (2013.01) [G01N 33/24 (2013.01); G01N 2223/076 (2013.01); G01N 2223/616 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for acquiring an elastic modulus of a rock containing sedimentary rhythms, comprising:
acquiring a rock sample containing sedimentary rhythms;
measuring contents of rock elements in the rock sample at test points with an X-ray fluorescence (XRF) spectrometer, the test points being provided on different rhythms of the rock sample;
determining a lithology of the rock sample according to the contents of the rock elements;
determining an element-mineral relation equation according to the lithology;
determining mineral components of the rock sample with the lithology and the element-mineral relation equation;
determining a modulus coefficient of each of minerals according to the mineral components; and
determining an elastic modulus of the rock sample according to the mineral components and the modulus coefficient of each of the minerals.