Article Per Year (5 Year)
p-Index From 2021 - 2026
2.286
P-Index
This Author published in this journals
All Journal International Journal of Community Service Jurnal Abdi Masyarakat Indonesia Banua: Jurnal Kesehatan Lingkungan Petro : Jurnal Ilmiah Teknik Perminyakan JURNAL ABDI MASYARAKAT INDONESIA (JAMIN) Journal of Earth Energy Science, Engineering, and Technology Journal of Emerging Science and Engineering Scientific Contributions Oil and Gas
Widia Yanti, Widia
Unknown Affiliation
Religion Humanities Chemical Engineering, Chemistry & Bioengineering 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 Other

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
Effect of LHP Nanosilica on Sandstone Wettability and Oil Recovery by Imbibition in Crude Oils with Different API Jumiati, Wiwiek; Hani, Berkah; Yanti, Widia; Sutresno, Wahyu; Wihdany, Falza Izza; Ghaziyah, Hawa Syuraih; Herlambang, Karyanto; Celli, Agli Tori; Wibowo, Gilang Saputra
Scientific Contributions Oil and Gas Vol 49 No 1 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i1.2053

Abstract

This study investigates the influence of lipophobic–hydrophilic polysilicon (LHP) nanosilica on wettability alteration and oil recovery performance through spontaneous imbibition in initially neutral-wet sandstone. The novelty of this study lies in its systematic comparative framework using two crude oils with distinct API gravities and SARA compositions to evaluate the role of fluid–rock interactions in depth. Two crude oils with different API gravities were selected to evaluate the role of oil composition in fluid–rock interactions. Crude oil properties were characterized using SARA analysis, while imbibition tests were conducted using 5000 ppm brine and nanosilica dispersions at controlled concentrations. Wettability Index (WI) was determined using the Amott cell method, and Oil Recovery Factor (ORF) was calculated from produced oil volume. Results indicate that LHP nanosilica consistently shifts rock wettability toward more water-wet conditions. The lighter crude oil exhibits a stronger wettability response and higher recovery improvement than the heavier oil. A positive correlation between WI and ORF confirms wettability alteration as the dominant enhanced oil recovery mechanism. These findings provide a significant contribution by establishing crude oil characteristics as a key controlling factor in nanofluid EOR design, which is crucial for field applications with complex fluid variations.
Effects of Palm-Oil-Based Methyl Ester Sulfonate (MES) in Laboratory-Scale Enhanced Oil Recovery Process Ridaliani, Onnie; Samsol; Setiati, Rini; Fathaddin, Muhammad Taufiq; Anggela, Lilian; Prima, Andry; Davy, Nandito; Yanti, Widia
Scientific Contributions Oil and Gas Vol 48 No 4 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i4.1825

Abstract

Natural Declining oil production is often caused by reduced natural driving forces within reservoirs. To address this limitation, enhanced oil recovery (EOR) technology introduces external energy or chemical agents to mobilize residual oil. This study evaluated the performance of palm-oil-based methyl ester sulfonate (MES) an anionic and biodegradable surfactant synthesized from renewable feedstock for improving recovery efficiency under laboratory-scale conditions. Core-flood experiments were performed using Berea sandstone cores, intermediate 33°API crude oil, low salinity of 10,000 ppm, synthetic brine at 60 °C. The testing sequence included screening test of palm-oil-based MES, brine saturation, oil saturation, waterflooding, and subsequent surfactant flooding with 1.5% MES solution. During waterflooding, the recovery factor reached 62.8 %, leaving 31.29 % residual oil saturation. Injection of 1.5 wt % MES increased the recovery factor to 68.8 % and reduced residual oil saturation to 26.25 %, indicating enhanced displacement and improved microscopic sweep efficiency. The results confirmed that palm-oil-derived MES effectively mobilizes trapped oil and demonstrates strong potential as an environmentally friendly and locally available surfactant for chemical EOR applications in the reservoirs.
Drilling Fluid Optimization Using Response Surface Methodology Satiyawira, Bayu; Maulani, Mustamina; Samura, Lisa; Pramadika, Havidh; Nugrahanti, Asri; Rosyidan, Cahaya; Prima, Andry; Arkaan, Muhammad Dzaki; Yanti, Widia
Scientific Contributions Oil and Gas Vol 48 No 4 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i4.1900

Abstract

Water-based drilling fluids commonly exhibit rheological degradation under high-temperature, high-pressure (HTHP) conditions, resulting in significant reductions in viscosity, yield point (YP), and gel strength (GS). Previous studies relying on conventional additives such as PAC, CMC, KOH, and NaOH have not fully resolved this issue, particularly in maintaining rheological stability at elevated temperatures. This study addresses this gap by introducing an alkaline polymer as a multifunctional additive intended to replace several conventional components while enhancing thermal resistance. Response Surface Methodology (RSM) with a Box–Behnken design was used to evaluate the combined effects of Carboxymethyl Cellulose (CMC) and alkaline polymer at three temperature levels: 80°F, 150°F, and 250°F. Experimental results show that at 150°F, the optimized formulation consists of 3.5 g CMC and 3.6 g alkaline polymer, yielding a viscosity of 17.64 cP, plastic viscosity of 12.46 cP, and a YP of 7.72 lb/100 ft², representing a substantial improvement compared to the baseline formulations, where YP values decreased significantly with temperature. The optimized mud also demonstrated improved gel strength and consistent filtrate control relative to non-optimized systems. The novelty of this study lies in the use of an alkaline polymer as a single multifunctional substitute for multiple drilling-fluid additives, combined with a multi-temperature RSM optimization framework. The findings provide a simplified, thermally stable drilling-fluid formulation suitable for HTHP environments.
Co-Authors -, Pauhesti Andry Prima Anggela, Lilian Aqlyna Fattahanisa Arkaan, Muhammad Dzaki Aryanto, Reza Asri Nugrahanti, Asri Bayu Satiyawira Cahaya Rosyidan Celli, Agli Tori Davy, Nandito Dini Daningrum Djoko Sulistyanto, Djoko Djunaedi Agus Wibowo Fadliah Fadliah, Fadliah Ghanima Yasmaniar Ghaziyah, Hawa Syuraih Hani, Berkah Harin Widiyatni Havidh Pramadika Henk, Alvin Herdyanti, Mixsindo Korra Herlambang, Karyanto Husla, Ridha Istibra, M. Khair Dabit Jane, Gabey Juanda, Firdaus Jumiati, Wiwiek Kashah, Muhammad Refli Lestari Said, Lestari Lumban Toruan, Michael Joshua Maman Djumantara, Maman Maulani, Mustamina Muhammad Taufiq Fathaddin, Muhammad Taufiq Onnie Ridaliani, Onnie Pauhesti, Pauhesti Poluan, Chris Elvano Puri Wijayanti, Puri Reno Warni Pratiwi Rini Setiati Ristawati, Arinda Riswati, Shabrina Sri Rizkina Rangga Wastu, Apriandi Rohman, Faiz Samsol Samsol Samura, Lisa Sunny Yulia, Prayang Sutresno, Wahyu Syamsul Irham, Syamsul Timpal, Gracia Betaria Jacqueline Wastu, Apriandi Rizkina Rangga Wibowo, Gilang Saputra Wihdany, Falza Izza wiwik dahani, wiwik Yarra Sutadiwiria Yoga Pratama, Aditya Yulia, Prayang Sunny