Multi-Scale Evaluation of Theoretical and Pressure-Constrained Capacity for Site Selection in the Appalachian Basin Region of the United States of America

Abstract

Preliminary CO2 capacity and injection performance are evaluated at the following scales: regional or formation scale, site scale, and near-well or local scale. Multiple target injection systems such as single formation injection zone and multiple formation stacked injection zones are explored. The reservoir feasibility assessment determined (a) volumetric capacity, and (b) dynamic capacity and injectivity for CO2 storage in the ~61,000 km2 study region in the Appalachian Basin. This paper presents the reservoir feasibility assessment methodology, which applied novel visual interpretation of potential target locations for CO2 storage, systematic performance-based screening and ranking workflow for potential storage sites, and numerical investigation of key operational constraints in select potential saline sites.