Abstract
The utilization of anthropogenic CO2 for enhanced oil recovery (EOR) can significantly extend the production life of an oil field, and help in the reduction of atmospheric emission of anthropogenic CO2 if sequestration is considered. This work summarizes the prospect of EOR and sequestration using CO2 flooding from an Indian mature oil field at Cambay basin through numerical modelling, simulation and pressure study based on limited data provided by the operator. To get an insight into CO2-EOR and safe storage process in this oil field, a conceptual sector model is developed and screening standard is proposed keeping in mind the major pay zone of the producing reservoir. To construct the geomodel, depth maps, well positions and coordinates, well data and well logs, perforation depths and distribution of petrophysical properties as well as fluid properties provided by the operator, has been considered. Based on the results from the present study, we identified that the reservoir has the potential for safe and economic geological sequestration of 15.04×106 metric ton CO2 in conjunction with a substantial increase in oil recovery of 10.4% of original oil in place. CO2-EOR and storage in this mature field has a bright application prospect since the findings of the present work could be a better input to manage the reservoir productivity, and the pressure field for significant enhancement of oil recovery followed by safe storage.
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Ganguli, S.S., Vedanti, N., Akervoll, I. et al. Assessing the feasibility of CO2-enhanced oil recovery and storage in mature oil field: A case study from Cambay basin. J Geol Soc India 88, 273–280 (2016). https://doi.org/10.1007/s12594-016-0490-x
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DOI: https://doi.org/10.1007/s12594-016-0490-x