Subsurface Structural Investigation for Evaluation of Hydrocarbon Potential Using Aeromagnetic Data over Parts of Southeastern Nigeria

Airborne magnetic dataset Studies were carried out in parts of South eastern Nigeria. Airborne magnetic data covering the study area was acquired, processed, and interpreted with the aim of determining the depth to basement of for hydrocarbon potential in the study area. Various data enhancement techniques such as reduction to equator, Analytica Signal, First Vertical Derivative (FVD), upward continuation and 3D euler deconvolution were carried out on the magnetic data in order to filter unwanted signals. Analysis such as sediment thickness was evaluated using the Extended Euler Depth solution. Sediment thickness within the southern Benue Trough ranges from 151.1 to 1297.4 m. Afikpo Basin has sediment thickness ranging from 513.9 to >3469.6 m, while Anambra Basin has sediment thickness ranging from 228.4 to >3469.6 m. the thickest sedimentary unit within the Afikpo Basin is geographically located around Bende, Iduma, Ohafia, Okigwe, Abiriba, Uzuakolo and Amaeke, while that of the Anambra Basin is geographically located around Aka Ihobe, Orumba, OwereEzukala, Mbala, Agwu, Isuochi, Akwa, Umuawulu, Ezeagu, Onuba, Agbani and AbawaOgugu. Niger Delta Basin has the high sediment thickness with range of 3469.6 to 6760 m, with the thickest sediment geographically located around Omodema, Abara, Omoecheigbo, Etche, Imogwa, Okoroagu.