Utilizing Atomic Force Microscopy for Microstructural Surface Analysis and Reservoir Evaluation of Shale

Abstract

This study leverages atomic force microscopy (AFM) to analyze shale structure, thereby assessing the reservoir capacity of shale formations. The methodologies employed include the observation of surface morphology, characterization of surface roughness, mechanical property measurements, examination of interfacial forces between solids and liquids, and evaluation of surface potential. Utilizing these methods, we have examined shale samples from the Weiyuan area and discovered that different samples exhibit varying degrees of roughness and surface potential distribution. Additionally, we have identified a correlation between the mechanical properties of functional probes made from oil droplets and the samples. The study’s main conclusion underscores the effectiveness of AFM as a tool for evaluating shale reservoir capacities. Through a thorough investigation, this research illuminates the current state of AFM applications in shale studies and suggests prospective avenues for future research.