Application of seismic inversion and spectrum decomposition technology in deepwater exploration

Due to high investment, high risk and high technology in deepwater exploration, it is crucial to boost exploration success rate and search for prospects in frontiers or some areas with low degree of exploration or even no wells. In this article, no-well wave im-pedance inversion and spectrum decomposition were applied to a deepwater basin in West Africa. Spectrum decomposition was em-ployed to research on reservoir lateral distribution through tuning the corresponding relationship of amplitude properties in frequency do-main. The seismic resolution after decomposition is higher than conventional seismic. This aids the researchers to delineate reservoir and estimate layer thickness. Moreover, no-well wave impedance inversion in combination with seismic decomposition can be used to predict the beneficial facies tracts and reservoirs.