Victoria A. UMEJURU, Isaac E. IHUA-MADUENYI, & Adaobi S. NWOSI-ANELE. (2026). Performance Evaluation and Economic Assessment of Electrical Submersible Pumps for Heavy Oil Production in Mature Niger Delta Oilfields. FUDMA Journal of Engineering and Technology, 2(1), 500-516. https://doi.org/10.33003/pgc94k49