CONTRIBUTION OF INVERTED SEISMIC DATA IN EXTRACTING ATTRIBUTES TO CHARACTERIZE PLIOCENE AGED CHANNEL LOCATED OFF-SHORE THE NILE DELTA, EGYPT

摘要

Seismic attribute technology can extract information from seismic data and used in predicting, characterizing, and monitoring hydrocarbon reservoirs. Multi-trace windowed extraction method is one of the methods used to extract event attributes. Root Mean Square (RMS) amplitudes and the maximum negative amplitudes of Pliocene aged channel located offshore the Nile Delta, Egypt were extracted using different seismic volumes. The extraction of RMS amplitudes with time window of (-5,5 ms) from the top of the channel using; near, mid, far, and full offset angle stacks volumes, showed the effect of lithology and fluid. Maximum negative amplitudes were extracted between the top and the base of the channel using; reflectivity, Colored Inversion (CI), and Absolute Acoustic Impedance (AAI) near angle stack volumes. Reflectivity and Cl near angle stack volumes, showed the difference between the channel complex and the background shale. AAI volume provided detailed description of the reservoir.