Multi-Scale Drill-Core Digitalization Technique and its Applications for Reservoir Characterization: A Case Study of an Unconventional Reservoir in China

Abstract

Abstract Multi-scale drill-core digitalization has been recognized as an efficient technique in geological survey and geophysical exploration. This technique conducts a comprehensive examination of the internal structure of rocks, and investigates the underlying mechanism of mineral and pore genesis. In this paper, a drill-core interval from an unconventional reservoir in China is selected for digitalization, aiming to address the challenge of multi-scale parameter testing and analysis in reservoir characterization. Various advanced imaging techniques, including medical computed tomography (CT) scan, hyperspectral scan, micro-CT scan, backscattered electron (BSE) image, and quantitative evaluation of minerals by scanning electron microscopy (QEMSCAN) are used to perform the analysis. These findings are necessary parameters for reservoir characterization and this comprehensive analysis resulted in a detailed understanding of favorable reservoir distribution.