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Carbon Storage Potential in the Los Angeles Basin
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 1st Geoscience & Engineering in Energy Transition Conference, Nov 2020, Volume 2020, p.1 - 5
Abstract
Summary
Permanent carbon storage relies on detailed subsurface characterization and subsequent dynamic modeling to predict plume and pressure geometries. In this study, Schlumberger evaluated carbon storage feasibility in the Los Angeles Basin using proven geomodelling and simulation workflows in Petrel and Eclipse. Specific geologic criteria must be present in the subsurface to achieve permanent storage. A saline sand formation with appropriate injectivity properties exists, is thick enough to ensure sufficient storage capacity, and is deep enough to store CO2 in a super critical state (800 m). An overlying shale formation must exist regionally to confine injected CO2. Once these criteria were met, leakage pathways and other subsurface risks were considered. For the purpose of this study a geocellular facies model was created from public and raster log well data to calculate storage capacity and identify five prospective storage site locations. Evaluation criteria such as fault leakage and reactivation, distance to subsurface operations, and reservoir storage potential were used to rank prospective locations. After identifying the most feasible proposed location, Eclipse dynamic modeling was performed using an injection rate of 1 million tons CO2/year over 20 years plus 50 years post injection to predict carbon plume migration and stabilization.
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