Fort Nelson Test Site - Site Characterization Report
The PCOR Partnership worked with Spectra Energy Transmission to determine the feasibility of large-scale injection of CO2 into a deep brine-saturated carbonate formation near Fort Nelson, British Columbia, Canada, for the purpose of CO2 storage. Site characterization activities were conducted to address three critical issues affecting the viability of the Fort Nelson test site: 1) the capacity of the target formation, 2) injectivity, and 3) containment the potential for leakage of the injected CO2 into overlying formations and/or the near-surface environment. Geochemical, mineralogical/petrophysical, geomechanical, and hydrogeological data were collected for the purpose of supporting modeling, risk assessment, and monitoring, verification, and accounting (MVA) activities. The geology, stratigraphy, and lithology were evaluated, delineated, and described for the entire sedimentary succession from the base of the Devonian-age Presquile reef complex to the top of the Fort Simpson shale (cap rock) in the Fort Nelson project area. The structural elements of the reef complex were investigated to identify any existing faults and/or fractures that would allow migration of any reservoir and/or injected fluids out of the storage reservoir. On this basis, a geologic model was built, with particular attention given to the Devonian injection interval and overlying and underlying sealing formations.View/Download Document