Infill well evaluations of Jonah Field tight gas: characterization and simulation of complex architectural elements

This paper summarizes recent reservoir characterization and simulation studies performed in the Jonah Field, one of the most prolific natural gas fields in the Rocky Mountain region of the United States. The goal of the studies was to integrate geology, petrophysics, 3D seismic, and engineering data into 3D geologic and engineering models to evaluate infill well development in different regions of the field. This article shows how variations in channel development and thickness have a direct impact on gas recovery and optimal well spacing for different areas of the field. We also show that these channels can be mapped with the help of attributes inverted from pre-stack seismic data.