DELINEATING

This study was carried out with the aim of delineating and establishing the lithofacies present in the well. From a depth of 4,500 feet (4500 feet) to 11,500 feet (11500 feet) from the Well ‘X’ in the Greater Ughelli Depobelt, Niger Delta Basin, Southern Nigeria, 117 ditch cutting samples were taken from the Shell Petroleum Development Company (SPDC) and processed for sedimentological analysis. We created a lithostratigraphical map for the well that included lithofacies, lithofacies units, formations, and related minerals. Four lithofacies—sandstone, sandy shale, shale, and shale sand—are revealed by the sedimentological examination of the well (4500–11500 feet) in Southern Nigeria's Niger Delta Basin. Twenty-seven (27) lithofacies units were found in the well, including the following: the Sandy Shale lithofacies at units 2, 4, 6, 8, 10, 15, 17, 20, 22, and 26; the Shale lithofacies at units 1, 5, 23, and 25; the Sandstone lithofacies at units 11, 13, 18, and 27; and the Shaly Sand lithofacies at units 3, 7, 9, 12, 14, 16, 19, 21, and 24. In conclusion, the litholog application for studying Well ‘X’ was able to delineate and establishing the lithofacies (Hydrocarbon Play Elements) that are present, as the well under study has hydrocarbon play features such as source rock, reservoir rock, caprock, traps, and seals.