A Feasibility Study of Non-Seismic Geophysical Methods forMonitoring Geologic CO2 Sequestration

• Main Authors: Gasperikova, Erika, Hoversten, G. Michael
• Language: unknown
• Published: 2018
• Subjects: 54 ENVIRONMENTAL SCIENCES; BRINES; HYDROCARBONS; MONITORING; OIL FIELDS; PETROLEUM INDUSTRY; SIMULATION; CARBON SEQUESTRATION; north slope; Alaska
• Online Access: http://www.osti.gov/servlets/purl/919010; https://www.osti.gov/biblio/919010

Because of their wide application within the petroleumindustry it is natural to consider geophysical techniques for monitoringof CO2 movement within hydrocarbon reservoirs, whether the CO2 isintroduced for enhanced oil/gas recovery or for geologic sequestration.Among the available approaches to monitoring, seismic methods are by farthe most highly developed and applied. Due to cost considerations, lessexpensive techniques have recently been considered. In this article, therelative merits of gravity and electromagnetic (EM) methods as monitoringtools for geological CO2 sequestration are examined for two syntheticmodeling scenarios. The first scenario represents combined CO2 enhancedoil recovery (EOR) and sequestration in a producing oil field, theSchrader Bluff field on the north slope of Alaska, USA. The secondscenario is a simplified model of a brine formation at a depth of 1,900m.