Method and application of accurate determination of nano-pore adsorption thickness in shale oil reservoir

Abstract At present, there is no method to accurately characterize the liquid film thickness of shale nanopores with different mineral compositions. This article describes the wetting modification of a 500nm homogeneous quartz model, measures the liquid film thickness under different pressure gradients, and establishes experimental expressions. Based on the experimental results, a prediction method for the thickness of the nanopore boundary layer and a theoretical model for the thickness of the