Constructing the Fractional Flow Curve for the Masrab Oilfield Using Production Data: A Case Study in Libya

Abstract

This study focuses on evaluating the flow performance of oil and water in the Masrab oilfield, Libya, using production data. The main goal is to apply the production data method to calculate fractional flow curves, which are essential for optimizing production strategies in mature oilfield. The analysis was conducted using Excel software, which facilitated efficient calculations and plotting of the fractional flow curves. The results reveal that the field is oil-wet, a condition that has a direct impact on oil recovery efficiency. Oil wet reservoirs tend to have lower recovery rates, as water does not easily displace oil from the rock surfaces, leading to challenges in maximizing oil extraction. The production data method used in this study proved to be more accurate and practical for field applications compared to traditional methods like the Buckley-Leverett approach. Furthermore, this approach was shown to be more cost-effective and time-efficient, particularly in environments where core sampling or extensive fluid property data is difficult to obtain. The study highlights the importance of using real-time production data to assess reservoir performance, especially in challenging conditions where conventional methods may not be feasible. Based on the results, it is recommended that the production data approach be preferred in oil-wet reservoirs like Masrab, as it offers significant advantages in terms of improving oil recovery and optimizing field operations. This approach provides a more practical and accessible solution for enhancing reservoir management and increasing long-term production efficiency.