Corrosion Control in CO2 Enhanced Oil Recovery From a Perspective of Multiphase Fluids

Abstract

Carbon capture and storage (CCS) combined with CO 2-enhanced oil recovery (EOR), has been recently viewed as an economical and effective method for the reduction of carbon emissions. However, corrosion is a challenging issue in the whole chain process of CO 2-EOR production if water presents and mild steel pipeline is used. In this paper, the corrosion risk of pipeline at different stages of CO 2-EOR production is systematically assessed based on a detailed analysis of the fluid characteristics. According to the fluid state of CO 2 , water and crude oil, current understandings on the corrosion behavior of steel materials in multiphase flow conditions are reviewed. Furthermore, the intermittent water wetting phenomena and the fluid behavior of water droplets or clusters in an electrolyte/non-electrolyte emulsion are correlated with the steel corrosion performance, providing new insights into the corrosion phenomena. Besides application of corrosion resistant materials and corrosion inhibitors, tailoring of processing parameters, such as enhancing the water entrainment, shortening the water contact time, and reducing the solution corrosivity, is highly recommended as an effective method for corrosion control in aggressive CO 2-EOR production conditions. Based on these, some important future research topics on the corrosion in multiphase fluids are suggested.

Supercritical Fluid Application in the Oil and Gas Industry: A Comprehensive Review

“…The ability of supercritical fluids to penetrate porous media makes them attractive for extracting hard-to-recover crude hydrocarbons from the subsurface. According to [12,76], wells with a pressure of more than 20 MPa (a depth of about 5000 feet (1524 m)) can be suitable for injecting supercritical CO 2 . Wells with such parameters are unsuitable for steam injection because the thermal parameters in the well are above the critical point for water, and heat losses make steam injection disadvantageous.…”

“…Sustainability 2022, 14, 698 [76,12], wells with a pressure of more than 20 MPa (a depth of about 5000 feet (1 can be suitable for injecting supercritical CO2. Wells with such parameters are un for steam injection because the thermal parameters in the well are above the critic for water, and heat losses make steam injection disadvantageous.…”

Impact of Crude Oil Emulsion on Pipeline Corrosion

“…The viscosity of crude oil decreases enormously with increasing pressure and temperature. It should also be noted that, in W/O emulsions, a lower viscosity can lead to easier separation of phases a condition that increases the risk of corrosion [7].…”

Recent developments, challenges, and prospects of ultrasound-assisted oil technologies

“…Similar challenge of environmental degradation occurs with chemical EOR [6] , [7] . And CO 2 EOR encounters corrosion issues, and potential pipeline and equipment leakages [8] . Hence, technologies such as ultrasound has been utilized in combination with these EOR methods in order to further boost their performance.…”