![]() ![]() Much has been written about these techniques, and attempting to gain an understanding on the theory and application of them by reading through various journals can be quite daunting. Inversion is another commonly used technique that attempts to tie the seismic data back to the geology. Analysing seismic data for direct hydrocarbon indicators (DHIs), such as full stack amplitude anomalies, or amplitude variation with offset (AVO), can help a seismic interpreter relate the geophysical response to real geology and, more importantly, to distinguish the presence of hydrocarbons. Changes in lithology and fluid fill affect the seismic wavelet. The acquisition of seismic data is a non-invasive technique used for determining the sub surface geology.
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