From Micro to Macro: Integrated Characterization and Simulation for Shale Gas Reservoir Development

Jie (Jason) Zhan



In this work, we have revisited the apparent permeability model developed by Dr. F. Javadpour. Based on the apparent permeability model, we quantify the difference of productivity between the Darcy permeability and apparent permeability. A different methodology to simulate the adsorption/desorption process is presented. We also quantify the pressure maintenance and the production contribution of the adsorption/desorption process. In addition to the conventional Langmuir model, the BET model which could depict multiple adsorption layers is implemented. A sorption-dependent effective pore radius is introduced. The adsorption/desorption induced heterogeneity is quantified. Based on the Bakken shale lab data, two-way coupling geomechanics is introduced to examine the shale formation stress-sensitivity. And the transient permeability evolution is provided. Additional heterogeneity is induced by the stress-sensitivity. The induced heterogeneity effect on the transient pressure response is provided. With handy tools, a practical solution to characterize shale gas reservoir performance is provided. A novel integrated workflow for shale gas reservoir field development is provided.