The Application of Seismic Attributes in Fault Detection and Direct Hydrocarbon Indicator in Tomboy Field, Western-Offshore Niger Delta Basin

Seismic attribute analysis is important in subsurface data interpretation, such as seismic which could involve stratigraphic and structural interpretation. This interpretation often hampered by resolution and, sometimes, human inability to identify a subtle feature on the seismic. These factors have frequently led poor of geologic features. Thus, an integral approach studying patterns hydrocarbon bearing zones using attributes was carried out Tomboy field 3D covering approximately 56 km2 western belt Niger Delta. The volume underwent post-stack processing, enhanced discontinuities. A deep steering first created, several dip filters were applied enhance faults study area. After that, curvature similarity calculated dip-steered fault-enhanced volume. calculations show detailed geometry lineaments. Six (F1, F2, F3, F4, F5 F6) identified mapped. range from antithetic crest growth faults. Two major (F5 revealed northeast southwest directions. near-extensive fault (F4) appeared beneath Although minor fractures displayed southern central portions dipping data, fault, F6, are responsible for holding found within closures. Using increased confidence mapping interpreting Furthermore, energy used Direct Hydrocarbon Indicators (DHI) visualize viable areas study, allows more robust Time slices taken regions flat bright spots. spectral decomposition run these display high amplitude reflection typical hydrocarbon-bearing trapped mainly regional sub-regional surface generated shows that predominantly controlled serving traps hydrocarbon.