Ugbor, C.C. et al. 2026. Reducing Geopressure Related Non-Productive Drilling Downtime: A Case of Recent Proposed HPHT Deep Exploration Well, Onshore-Shelf, Niger Delta Basin, Nigeria. Iranian Journal of Earth Sciences. 18, 2 (Jun. 2026). DOI:https://doi.org/10.57647/j.ijes.2025.16945.