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INDONESIA
JOURNAL OF EARTH ENERGY ENGINEERING
Published by Universitas Islam Riau
ISSN : -     EISSN : 25409352     DOI : -
Core Subject : Science, Engineering,
Earth & Planetary Sciences Energy Engineering Materials Science & Nanotechnology
Journal of Earth Energy Engineering (eISSN 2540-9352) is a Bi-annual, open access, multi-disciplinary journal in earth science, energy, and engineering research issued by Department of Petroleum Engineering, Universitas Islam Riau. The journal is peer reviewed by experts in the scientific and engineering areas and also index in Directory of Research Journals Indexing (DRJI) and CrossRef Member.
Arjuna Subject : -
Articles 2 Documents
 1 
Search results for , issue "Vol. 13 No. 1 (2024)" : 2 Documents clear
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.
The Alternative way to estimate the global solar radiation in Sabha city in southern Libya Abdalraheem, Ali; Omar, Baba
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.2024.14336

Abstract

In Libya some climatic parameters without solar radiation data are measured at meteorological stations. In south of Libya where the most solar energy available, there is no recorder data any more. Because of equipment installation, repair costs, poor maintenance culture and recent events in Libya. This study aims to estimate the global solar radiation in the city of Sabha in southern Libya. Data used in this purpose is the average monthly daily values of sunshine hours for previous years (2000 - 2010). The data were obtained from the archive of the meteorological station at Sabha airport. A model based on the hours of sunshine is used to calculate the horizontal solar radiation in the city. Calculated values are compared with other measurement data from NASA website. The comparisons are made using standard statistical tests, namely root mean square error (RMSE), mean bias error (MBE) and the correlation coefficient R. Statistical analysis: the RMSE average value in all years is positive and small (0.42), which make it desirable. The MBE average value in all years has negative value (-0.10), which is under estimation. Finally, the correlation coefficient   R, the correlation between the estimated values and the measured values from NASA is a positive correlation in all years, reaching (0.9) and the correlation strength is strong. It may almost reach complete correlation.

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