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All Journal Journal of Earth Energy Science, Engineering, and Technology Scientific Contributions Oil and Gas
Cahyaningtyas, Ndaru
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Chemical Engineering, Chemistry & Bioengineering Energy

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Optimization of Hydraulic Fracturing Modeling on The Proppant Flowback Issue Well DF-007 Nugraha, Fanata Yudha; Cahyaningtyas, Ndaru; Addin, Dhaffa Izuddin; Tony, Brian; Nandiwardhana, Damar
Journal of Earth Energy Science, Engineering, and Technology Vol. 8 No. 3 (2025): JEESET VOL. 8 NO. 3 2025
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/dkvxbf52

Abstract

Well DF-007, Field IA, Talang Akar Formation has low permeability that hinders well productivity. To improve production performance, hydraulic fracturing operations need to be conducted on the well. However, after the operation, a proppant flowback problem was discovered when the well was put back into production. This issue disrupts production performance and causes proppant accumulation. This problem indicates the need for a comprehensive analysis of the factors leading to proppant flowback issues, before determining a solution that addresses the root cause of the problem. The research flow begins with analyzing the factors causing proppant flowback issues such as initial production management settings, mechanical, and hydrodynamic force factors. After identifying the main issue, which is the hydrodynamic force factor, the process continues to the re-modeling stage by selecting proppants and fracturing fluids. The solution is determined by selecting the YF135.1HTD fracturing fluid with high viscosity to optimize proppant transportation, as well as choosing a combination of conventional proppants and adding resin-coated or rod-shaped proppants in the final stage to strengthen the stability of the proppant layer. The evaluation results show that the use of a combination of the fracturing fluid YF135.1HTD and the proppants BorProp 16/20 (Ceramic) + 16/20 XRT Ceramax I (Resin Coated Ceramic) can increase the average formation permeability from 5.33 mD to 181 mD, skin factor from +11.65 (damaged) to -6.03 (stimulated), fold of increase (FOI) of 8.21 times, as well as an increase in the gross rate on the inflow performance relationship (IPR) from previously 88 BFPD to 880 BFPD.
Fluid-To-Fluid Interaction of Rhamnolipid Biosurfactants with Divalent Ions: Investigation of Interfacial Tension and Emulsion Viscosity Hariyadi; Cahyaningtyas, Ndaru; Nugraha, Fanata Yudha; Larasati, Karina; Fatahillah, Azhar Faari; Astuti, Dian Indri
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.v49i1.1927

Abstract

Rhamnolipid biosurfactants derived from microbial sources have gain substantial interest as environmentally sustainable alternatives to synthetic surfactants, particularly in the realm of Microbial Enhanced Oil Recovery (MEOR). Their biodegradability, low toxicity, and effectiveness under extreme conditions make them ideal candidates for improving oil displacement in reservoir. However, the presence of divalent ions, specifically calcium (Ca²⁺) and magnesium (Mg²⁺), which are abundant in reservoir brine, can significantly affect the performance of these biosurfactants. This research investigates the influence of Ca²⁺ and Mg²⁺ ions on the phase behavior, stability, and interfacial properties of rhamnolipid-based microemulsion systems, which play a critical role in MEOR processes. A series of experiments was conducted to analyze the impact of varying concentrations of Ca²⁺ and Mg²⁺ ions on rhamnolipid microemulsions. The study evaluated phase transitions, stability, and microstructural characteristics of emulsions using a spinning drop tensiometer to measure interfacial tension (IFT) and rheological analysis to determine viscosity. The results demonstrate that both Ca²⁺ and Mg²⁺ ions influence the optimal salinity conditions required for microemulsion stability, with their presence causing shifts in the phase boundaries. Notably, Ca²⁺ ions exert a more pronounced effect on phase stability compared to Mg²⁺, leading to increased IFT and viscosity at higher concentrations. These findings further elucidates the crucial role of divalent ions in governing the stability and functionality of biosurfactant systems under reservoir conditions and highlight the importance of controlling ion concentrations to achieve efficient MEOR applications. Overall, this research provide valuable insight for optimizing the formulation of rhamnolipid-based systems to enhance oil recovery performance while mitigating the adverse effects of high divalent ion content in brine. The research contributes to ongoing efforts to improve biosurfactant efficacy, offering a pathway toward refining MEOR strategies and advancing sustainable oil recovery technologies.
Co-Authors Addin, Dhaffa Izuddin Astuti, Dian Indri Damar Nandiwardhana, Damar Fatahillah, Azhar Faari Hariyadi Karina Larasati Nugraha, Fanata Yudha Tony, Brian