Minimum CO2 Miscibility Pressure Evaluation using Interfacial Tension (IFT) and Slim-tube Hybrid Tests

Muslim Abdurrahman; Asep Kurnia Permadi; Agus Arsad; Anis Farhana Abdul Rahman; Wisup Bae; Ully Zakyatul Husna; Ai Ling Pang; Rifal Fauzi

doi:10.1021/acsomega.2c08085

Minimum CO₂ Miscibility Pressure Evaluation using Interfacial Tension (IFT) and Slim-tube Hybrid Tests

ACS Omega. 2023 Feb 24;8(9):8703-8711. doi: 10.1021/acsomega.2c08085. eCollection 2023 Mar 7.

Authors

Muslim Abdurrahman¹, Asep Kurnia Permadi², Agus Arsad³, Anis Farhana Abdul Rahman³, Wisup Bae⁴, Ully Zakyatul Husna⁵, Ai Ling Pang⁶, Rifal Fauzi¹

Affiliations

¹ Department of Petroleum Engineering, Universitas Islam Riau, Riau 28284 Indonesia.
² Department of Petroleum Engineering, Institut Teknologi Bandung, Jawa Barat 40132, Indonesia.
³ UTM-MPRC Institute for Oil and Gas, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia.
⁴ Department of Energy and Mineral Resources Engineering, Sejong University, 05006 209 Seoul, Republic of Korea.
⁵ Pertamina Hulu Rokan, Sumatera Region Zone 3, Pekanbaru 28131, Indonesia.
⁶ Department of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman, 31900 Kampar, Perak, Malaysia.

Abstract

The effectiveness of CO₂-enhanced oil recovery (EOR) is strongly dependent on the CO₂-oil minimum miscible pressure (MMP) value, which can be estimated using various methods. In this study, interfacial tension (IFT) and slim-tube tests were used to estimate the MMP value. Experimental results indicated that the IFT test had a higher MMP value than the slim-tube test. Particularly, the outcomes of IFT and the slim-tube tests differed slightly, i.e., 0.7% and 4.3% at 60 and 66 °C, respectively. Furthermore, the current work also compares MMP data gathered using visual observation and equation of state (EOS) simulation. The MMP estimated by EOS is higher but close to the IFT and slim-tube recovery factor method, where all results are within the 1650-1700 psi and 1700-1800 psi visual observation ranges at 60 and 66 °C, respectively. However, MMP deviations concerning the slim-tube test and EOS were consistent at different temperatures. This study offers an alternative to estimate and evaluate CO₂-oil MMP for EOR applications accurately and efficiently.