1887

Abstract

Summary

Traditionally, deep saline aquifers are considered and evaluated for long term geological storage of CO2 due to relatively high CO2 solubility in water. In the oil industry, also, CO2 is used is as one of the injection agents to displace oil and enhance its recovery. The utilization of depleted gas fields for CO2 storage, however, is considered to be a more expensive option compared to oil field, since the enhanced recovery of gas with CO2 is not effective. For this reason, our study considers the potential use of CO2 EOR (enhanced oil recovery) in depleted gascondensate fields.

This potential is evaluated by performing numerical simulations for typical-size gas-condensate reservoirs with and without active aquifers, in order to estimate both storage efficiency and additional oil recovery from condensed C5+ hydrocarbon fractions, that otherwise will be never recovered and lost in the reservoir. Obtained results indicate significant potential for CO2 storage and additional condensate recovery from the typical gas-condensate field of Eastern Ukraine.

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/content/papers/10.3997/2214-4609.202021085
2020-11-16
2024-04-28
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