Compressional and shear wave velocities relationship in anisotropic organic shales
Compressional and shear wave velocities relationship in anisotropic organic shales
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各向异性有机页岩的压缩波速和剪切波速关系
DOI：
10.1016/j.petrol.2022.111070
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发表时间：
2022-09
影响因子：
--
通讯作者：
Geng Jianhua
中科院分区：
文献类型：
--
作者：
Qin Xuan;Zhao Luanxiao;Cai Zhenjia;Wang Yang;Xu Minghui;Zhang Fengshou;Han De-hua;Geng Jianhua
Understanding the relationship between compressional and shear wave velocities and their anisotropic characteristics in self-resourcing reservoir shales is of considerable interest for petrophysical, geophysical, and geomechanical applications of unconventional resources exploration and production. We compile laboratory measurements on the ultrasonic velocity of known shale reservoirs worldwide. Their compressional and shear wave velocities propagating in the vertical and horizontal directions can be characterized by a linear model with the coefficients of determination (R2) close to 0.9. The P-to-S-wave velocity ratio in the vertical direction is overall higher than that in the horizontal direction. The P-to-S-wave velocity ratio decreases with decreasing P-wave velocity due to the increasing organic matter content and hydrocarbon-filled porosity. Mineralogy influences the relationship between compressional and shear wave velocities to a minor degree. Carbonate-rich shales have a higher P-to-S-wave velocity ratio than silica-rich shale when the P-wave velocity is lower than 4 km/s and a lower ratio when the P-wave velocity is higher than 5 km/s. By employing anisotropic fluid substitution, we justify that the model derived from the laboratory measurements can apply to shale reservoirs containing gas or volatile oil. We apply the linear models to predict the shear wave velocity in two vertical wells of shale reservoirs. The predictions of shear wave velocity in the targeted reservoirs have less than 3% errors, demonstrating that the proposed linear models, to the first order, can predict shear wave velocity in unconventional shale reservoirs.
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影响因子：
3.3
作者：
Krongrath Suwannasri;T. Vanorio;Anthony Clark
通讯作者：
Krongrath Suwannasri;T. Vanorio;Anthony Clark
DOI：
10.1190/segam2013-1319.1
发表时间：
2013
期刊：
Seg Technical Program Expanded Abstracts
影响因子：
--
作者：
Fuyong Yan;De‐hua Han
通讯作者：
Fuyong Yan;De‐hua Han
影响因子：
3.5
作者：
L. Vernik;C. Landis
通讯作者：
L. Vernik;C. Landis
油窗湖相页岩微观孔隙结构特征及成因——以东营凹陷为例
影响因子：
3.5
作者：
Linye Zhang;Zhonghong Chen;Zheng Li;Shouchun Zhang;Juyuan Li;Qing Liu;Rifang Zhu;Jingong Zhang;Youshu Bao
通讯作者：
Youshu Bao
影响因子：
3.3
作者：
L. Vernik;Jadranka Milovac
通讯作者：
L. Vernik;Jadranka Milovac