The relationship between CO2 flux and gas composition in soils above an EOR- CO2 oil field (Brazil): A guideline for the surveillance of CO2 storage sites

Surface and Subsurface Geochemical Monitoring of an EOR-CO2Field: Buracica, Brazil

“…Whereas the amount of CO 2 in soils seems correlated with parameters governed by the topography, we suggest that the fluxes are related to the physical characteristics of the soil. Indeed, the upwelling flux of the CO 2 produced in situ will depend on the permeability and tortuosity of the soil, which are tied to the texture and water saturation of the soil [24][25]. However, given the lack of constraints on meteorological and petrophysical variables as well as the water saturation, it is impossible at the moment to interpret flux data.…”

The DEMO-CO2 project: A vadose zone CO2 and tracer leakage field experiment

“…Interesting results were retrieved from CO 2 -enhanced oil recovery operations (Romanak et al, 2012(Romanak et al, , 2013Beaubien et al, 2013;Rouchon et al, 2011a). Romanak et al (2012) developed the concept of process-based monitoring, which uses the stoichiometric relationships between O 2 and CO 2 that result from respiration and methane oxidation for determining the biogenic trend of natural gas component.…”

Worldwide Status of CCUS Technologies and Their Development and Challenges in China

“…The CLEAN project in Germany started a CO 2 -EGR project in the Altmark gas fields in 2009; however, public protests have prevented CO 2 injection on the site [65]. Many other countries including Australia and Norway are also positively developing this technology [64,[66][67][68][69][70][71][72][73][74].…”