Paper Title
Stratigraphic Interpretation of Thin Reservoirs in ‘Jude Field’, Offshore Niger Delta Using Spectral Decomposition Technique
Abstract
An important exploration zone of focus in the oil and gas industry is the turbidite sands within the deep water depositional system. An example of such is found in the offshore Niger Delta. However, because of the inhomogeneity of the sand and shale distribution within the Agbada formation and the complexity of the subtle structures wherein lie the thin reservoirs of interest for hydrocarbon accumulation, precise reservoir characterization is quite demanding. Different techniques have been widely applied to locate hydrocarbon within this delta. Due to the complexity of the structures, a precise seismic imaging tool Spectral Decomposition, is needed for characterization of such complicated reservoirs. Seismic data in time domain is converted into frequency domain using Spectral Decomposition method through mathematical methods such as Continuous Wavelet transform etc. The obtained result revealed subtle and complex geologic features such as thin bed reflections, meandering channels and lobes. Erroneous appraisal of seismic amplitude may lead to inaccurate interpretation and increase exploration risks.
Keywords - Reservoir Characterization, Inhomogeneity, Meandering Channels, Hydrocarbon Accumulation.