OBETA, Perpetual Oby, and Esther SAMUEL. 2026. “Rheological Evaluation of Mucuna Sloanei (Ukpo) As a Sustainable Bio-Polymer Viscosifier for Water-Based Drilling Fluids in Nigeria”. Direct Research Journal of Engineering and Information Technology 14 (1): 150-59. https://doi.org/10.26765/DRJEIT176147853.