Terahertz-dependent identification of simulated hole shapes in oil–gas reservoirs
Bao Ri-Ma1, 2, †, , Zhan Hong-Lei1, 2, †, , Miao Xin-Yang2, Zhao Kun1, 2, 3, ‡, , Feng Cheng-Jing2, Dong Chen2, Li Yi-Zhang2, Xiao Li-Zhi1
       

THz absorbance spectra of the three groups of punched and crude oil filled samples with triangular (red), circular (blue), and square (olive) holes in a frequency range from 0.1 THz to 2.2 THz, respectively.