.... temperature, and in-situ stress. However, these two parameters are hard to be considered simultaneously due to the limitation of the experimental apparatus. To address such an issue, rock samples are collected from the eastern Sichuan Basin, mainly including the sandstone located in the formations...

... velocities of Wufeng–Longmaxi shale of the Sichuan Basin in China, for finding a suitable model of this shale formation for predicting horizontal stress. These four models are divided into two types by whether or not there is Stoneley wave in model, which is group 1 including ANNIE model and M-ANNIE model...

... the spatial correlation of the logging data using analytical model and traditional neural network model. Therefore, based on the logging data of Da anzhai shale formation in Sichuan Basin, a hybrid neural network was proposed to predict the in-situ stresses. This hybrid neural network involved...