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Title Subsurface monitoring of large-scale CO2 injection at SECARBís Phase-III Cranfield site
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Nunez-Lopez, V.
Hovorka, S.D.

A research-focused large-scale carbon dioxide (CO2) injection at Cranfield Field, Mississippi, conducted as part of the Southeast Regional Sequestration Partnership (SECARB), is building experience in technologies and approaches that may be valuable in commercial deployment of CO2 storage projects. Since July 2008, more than 3 million tons of CO2 have been injected into a 25 m thick interval of the Lower Tuscaloosa Formation at 3.2 km depth, with the general goal of providing policy makers with the information needed to increase confidence in CO2 geologic storage capacity predictions and retention estimates. A suite of novel and traditional monitoring technologies was utilized to observe the evolution of the CO2 plume and obtain data about the performance of the reservoir in multiphase flow conditions. The monitoring program focused on above-zone pressure surveillance, down dip plume-edge mapping, and multiphase flow process in heterogeneous sandstone. The project started CO2 injection into the oil bearing formation of the field and advanced injection into the associated water leg, linking enhanced oil recovery (EOR) and downdip brine storage. Monitoring and injection continues through 2017. Key findings: CO2 moved in preferential paths along fluvial channels. A number of successfully deployed imaging tools support this channel-dominated flow theory. CO2 moved downdip and not preferentially updip, indicating buoyancy forces were not flow dominating at the interwell scale of the experiment. We hope results from this experimental project provide a strong foundation for transferable research and knowledge gain from the monitoring program, based on both strengths and weaknesses of applied monitoring technologies will be relevant for future commercial CO2 storage applications.

Collection GCCC Bookshelf
Pages 11
Issue Number
Keywords Monitoring Monitoring-Design Field study
Year 2012
Date Published 0000-00-00 00:00:00
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