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A Systematic Literature Review on Interfacial Tension and Zeta Potential Analyses Behind Smart Waterflooding Riswati, Shabrina Sri; Prakoso, Suryo; Setiati, Rini; Fathaddin, Muhammad Taufiq
Journal of Earth Energy Engineering Vol. 13 No. 1 (2024)
Publisher : Universitas Islam Riau (UIR) Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jeee.2024.9431

Abstract

Smart waterflooding is a widely discussed topic for oil recovery improvement, with the main mechanism believed to be wettability alteration. However, the exact phenomena behind this effect are still being debated. This systematic literature review (SLR) utilized the Scopus database to analyze and assess studies on the interfacial tension (IFT) and zeta potential (ZP) concepts and their impact on smart waterflooding between 2017 and 2021. The review was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) methodology. The review found inconsistencies in the literature, with some studies suggesting that the reduction of IFT from smart waterflooding was not the reason for oil recovery improvement. Further evidence on the alteration of surface charge through ZP analysis is needed, and gaps are present in the area of simulation approach. The study suggests that improvements in model development and experimental setup design are necessary for future studies to obtain comprehensive conclusions. In summary, this SLR provides a critical overview of the recent understanding of the impact of IFT and ZP on smart waterflooding and highlights areas for further research, including a potential model that incorporates each mechanism with the ultimate oil recovery.
PEMANFAATAN LIMBAH ORGANIK MENJADI ECO-ENZYME SEBAGAI PRODUK SERBAGUNA UNTUK MENJAGA KELESTARIAN LINGKUNGAN PONDOK PESANTREN Mardiana, Dwi Atty; Riswati, Shabrina Sri; Sagarmatha, Erly Amai
Jurnal Abdi Masyarakat Indonesia (JAMIN) Vol 5 No 2 (2023): JURNAL ABDI MASYARAKAT INDONESIA (JAMIN)
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jamin.v5i2.16970

Abstract

Pengolahan limbah organik menjadi salah satu permasalahan yang ditemukan di lingkungan sebuah Pondok Pesantren di Ciampea, Kabupaten Bogor. Pemilahan jenis limbah juga belum dilakukan, sehingga dibutuhkan edukasi pengolahan dan pelatihan pemanfaatan limbah organik. Kegiatan dimulai dari observasi lapangan untuk mengetahui kebutuhan dan permasalahan mitra, dilanjutkan dengan penyuluhan terkait penggunaan produk rumah tangga yang kerap kali menggunakan bahan kimia dan bahayanya bagi kesehatan dan lingkungan, penyuluhan terkait eco-enzyme sebagai upaya pengolahan limbah organik yang bermanfaat, dan pelatihan pembuatan eco-enzyme sebagai produk serbaguna dari limbah organik yang ramah lingkungan. Bahan dasar utama eco-enzyme berasal dari kulit buah yang rutin dikonsumsi, dengan tambahan gula jawa dan air. Baik santri maupun pengurus pondok pesantren sangat antusias dalam mengikuti kegiatan pengabdian kepada masyarakat ini. Para peserta pelatihan berkomitmen untuk melanjutkan proses produksi eco-enzyme dan memanfaatkan eco-enzyme dalam kegiatan sehari-hari sebagai bentuk kepedulian terhadap lingkungan serta penghematan biaya belanja rumah tangga pondok pesantren. Di samping itu, mitra juga masih membutuhkan pelatihan lanjutan seperti pemurnian air untuk kebutuhan sehari-hari.
Utilizing Used Lubricants to Enhance Intermediate Crude Oil Recovery Through Water-in-Oil Emulsions Alfatih, Mukhlis Noor; Mardiana, Dwi Atty; Riswati, Shabrina Sri; Park, Changhyup
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.v48i4.1924

Abstract

This study experimentally analyzes the impacts of water-in-oil (W/O) emulsion derived from used lubricants on enhanced intermediate-crude-oil recovery. The objective is to identify a viable and economically efficient method to enhance the extraction of intermediate crude oil. Typically, W/O emulsions have been employed as displacing fluids in heavy oil reservoirs. According to the results, there have been challenges experienced in the selection of an affordable petroleum-based product and ensuring its availability for emulsion preparation. Used lubricants can be incorporated as a component in the formulation of an emulsion solution by mixing them with brine. The physical and chemical properties of these used lubricants are evaluated to determine their suitability as a displacing agent. Subsequently, several concentrations of the emulsion were prepared, ranging from 5% to 60% (vol/vol), to effectively evaluate their suitability as a displacing fluid. The experimental workflow covered viscosity testing, mobility ratio measurement, IFT evaluation, emulsion stability checks, adsorption analysis, and thermal stability assessment. Core-flooding is performed to determine the recovery factor. A 5% W/O emulsion is found to be an effective displacing fluid for intermediate crude oil. The core-flooding results showes about a 27% increase in recovery when using the conventional flooding emulsion. Overall, the findings indicate that adding used lubricants to W/O emulsions improves intermediate oil recovery due to their favorable viscosity and stability.