Next Article in Journal
Homodyne Spectroscopy with Broadband Terahertz Power Detector Based on 90-nm Silicon CMOS Transistor
Next Article in Special Issue
Effect of Capillary Number on the Residual Saturation of Colloidal Dispersions Stabilized by a Zwitterionic Surfactant
Previous Article in Journal
Stability and Manoeuvrability Simulation of a Semi-Autonomous Submarine Free-Running Model SUBOFF with an Autopilot System
Previous Article in Special Issue
The Effect of Carbonyl and Hydroxyl Compounds Addition on CO2 Injection through Hydrocarbon Extraction Processes
Open AccessArticle

Compositional Modeling of Dimethyl Ether–CO2 Mixed Solvent for Enhanced Oil Recovery

1
Department of Earth Resources and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
2
Center for Climate/Environment Change Prediction Research, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2021, 11(1), 406; https://doi.org/10.3390/app11010406
Received: 16 December 2020 / Revised: 26 December 2020 / Accepted: 28 December 2020 / Published: 4 January 2021
(This article belongs to the Special Issue Advanced Oil Recovery Technologies)
Dimethyl ether (DME) is a compound first introduced by Shell as a chemical solvent for enhanced oil recovery (EOR). This study aims to investigate the efficiency of EOR using the minimum miscible pressure (MMP) and viscous gravity number when a mixed solvent of CO2 and DME is injected. Adding DME to the CO2 water-alternating-gas process reduces the MMP and viscous gravity number. Reduction in MMP results in miscible conditions at lower pressures, which has a favorable effect on oil swelling and viscosity reduction, leading to improved mobility of the oil. In addition, the viscous gravity number decreases, increasing the sweep efficiency by 26.6%. Numerical studies were conducted through a series of multi-phase, multi-component simulations. At a DME content of 25%, the MMP decreased by 30.1% and the viscous gravity number decreased by 66.4% compared with the injection of CO2 only. As a result, the maximum oil recovery rate increased by 31% with simultaneous injection of DME and CO2 compared with only using CO2. View Full-Text
Keywords: dimethyl ether (DME); water alternating gas (WAG); enhanced oil recovery (EOR); chemical solvent; miscible gas dimethyl ether (DME); water alternating gas (WAG); enhanced oil recovery (EOR); chemical solvent; miscible gas
Show Figures

Figure 1

MDPI and ACS Style

Lee, Y.W.; Lee, H.S.; Jeong, M.S.; Cho, J.; Lee, K.S. Compositional Modeling of Dimethyl Ether–CO2 Mixed Solvent for Enhanced Oil Recovery. Appl. Sci. 2021, 11, 406. https://doi.org/10.3390/app11010406

AMA Style

Lee YW, Lee HS, Jeong MS, Cho J, Lee KS. Compositional Modeling of Dimethyl Ether–CO2 Mixed Solvent for Enhanced Oil Recovery. Applied Sciences. 2021; 11(1):406. https://doi.org/10.3390/app11010406

Chicago/Turabian Style

Lee, Young W.; Lee, Hye S.; Jeong, Moon S.; Cho, Jinhyung; Lee, Kun S. 2021. "Compositional Modeling of Dimethyl Ether–CO2 Mixed Solvent for Enhanced Oil Recovery" Appl. Sci. 11, no. 1: 406. https://doi.org/10.3390/app11010406

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop