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All Journal International Journal of Community Service Jurnal AKAL: Abdimas dan Kearifan Lokal Petro : Jurnal Ilmiah Teknik Perminyakan Journal of Earth Energy Science, Engineering, and Technology Scientific Contributions Oil and Gas
Apriandi Rizkina rangga Wastu
Program Studi Teknik Perminyakan Fakultas Teknologi Kebumian Dan Energi Universitas Trisakti
Religion Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Public Health Social Sciences Transportation Other

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The Effect of MES-Ethanol Formulation in Enhancing Surfactant Flooding Efficiency - A Laboratory Scale Perspective Mulia Ginting; Muhammad Taufiq Fathaddin; Puri Wijayanti; Apriandi Rizkina Rangga Wastu; Zakia Azzahra; Eleonora Anselina Desi Letor; Ryan Gilberth de Fretes
Scientific Contributions Oil and Gas Vol 49 No 2 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i2.2096

Abstract

Surfactant flooding is an Enhanced Oil Recovery (EOR) technique aimed at improving oil displacement efficiency by reducing the interfacial tension (IFT) between oil and water. This study investigates the performance of palm oil–based Methyl Ester Sulfonate (MES) surfactant combined with 96% ethanol as a co-surfactant for EOR applications. The surfactant formulations were prepared at MES concentrations ranging from 0.5% to 2.0% and evaluated through density, viscosity, aqueous stability, phase behavior, interfacial tension, and coreflooding experiments. The aqueous stability test showed that all formulations remained clear without precipitation, indicating good thermal stability. Viscosity measurements showed that solution viscosity increased with higher surfactant concentrations but consistently declined as the temperature rose from 30 °C to 60 °C. Phase behavior analysis demonstrated that ethanol enabled the formation of emulsions at all concentrations, with middle-phase microemulsions observed at MES concentrations of 1.25% and 1.5%. The largest middle-phase emulsion volume of 3.00% was obtained at 1.25% MES, indicating the optimal formulation. Interfacial tension measurements showed a reduction to 0.521 mN/m, confirming the effectiveness of the co-surfactant in lowering IFT. Coreflooding results indicated that surfactant injection yielded an incremental oil recovery factor of 29.24% over conventional waterflooding, achieving a total cumulative recovery factor of 45.90%.
Effect of Corn Cob Addition on the Rheological and Filtration Properties of Water Based Drilling Mud Apriandi Rizkina Rangga Wastu; Ridha husla; Ghanima Yasmianiar; Asri Nugrahanti; Venezia Chelsea Reggiana Kalalo; R Hari Karyadi Oetomo; Siti Azizah
Scientific Contributions Oil and Gas Vol 49 No 3 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i3.2016

Abstract

Drilling mud is an essential tool in supporting the success of productive and economical oil and gas well drilling activities. Some chemical additives used to enhance the physical and rheological properties of mud tend to be toxic, non-biodegradable, and have negative environmental impacts. The use of household waste materials such as corn cobs, which can be reused as a natural polymer in drilling mud, presents a promising alternative. The separation of these materials serves the purpose of identifying a new type of polymer candidate, as they contain 41.27% cellulose, 46% hemicellulose, and 7.40% lignin, making them suitable for use as a polymer. The research involves analyzing the mud rheology, including plastic viscosity, yield point, gel strength, filtration loss, and mud cake, using three samples of water-based mud containing 1.5 grams, 3 grams, and 4.5 grams of finely ground corn cobs. The samples are then tested at two different temperatures, 80ºF and 200ºF, to observe the behavior of corn cobs when circulated into the well and entering formations with higher temperatures. Changes in rheological values and filtration loss with each additive addition will serve as indicators of the feasibility of corn cobs as a biodegradable alternative additive containing cellulose in drilling mud.
Co-Authors Abdul Hamid Ade Kurniawan Saputra Aqlyna Fattahanisa Arinda Ristawati Asri Nugrahanti Beta Resqy Avianti Eleonora Anselina Desi Letor Fadliah, Fadliah Firman Herdiansyah Ghanima Yasmaniar Ghanima Yasmianiar Gracia Betaria Jacqueline Timpal Havidh Pramadika Havidh Pramadika Lailatul Wastiyah lilik zabidi Mario Valentino Dio Muhammad Taufiq Fathaddin, Muhammad Taufiq Mulia Ginting Nadira Cahya Sutikna Onnie Ridaliani, Onnie Pauhesti Pauhesti puri wijayanti R Hari Karyadi Oetomo Reza Aryanto Ridha Husla Ridha Husla Ridha Husla Ryan Gilberth de Fretes Siti Azizah Sri Feni Maulindani Tedy Subardja Venezia Chelsea Reggiana Kalalo Widia Yanti Yulia, Prayang Sunny Zakia Azzahra