Sheng Peng, Ph.D.
Bureau of Economic Geology
Jackson School of Geosciences
The University of Texas at Austin
An understanding of fluid flow in the multiphase system and fluids-rock interaction in shale is fundamental in many aspects in shale oil/gas production, including completion, primary drainage, enhanced oil recovery, and water management. In addition to serving as a caprock, utilization of depleted shale formations as a medium for carbon storage is an emerging area of research. Comparing to conventional reservoirs, the low porosity, nano-Darcy level permeability, and heterogeneity of rock composition make the study of shale and tight rocks very challenging. In this presentation, attempt will be given to untangle the complicated problems and the elusive controlling factors, including pore network, wettability, and heterogeneity through an integrated method of multiscale (core-to-pore scale) imaging of water/CO2/oil displacement and laboratory measurement of permeability and relative permeability. New findings and insights in flow dynamics and mechanisms, shale wettability, and fracture-matrix interaction will be shared, and the implications on CO2 enhanced oil recovery and carbon storage will be discussed.