Analysis of West of Shetland drilling results has been discussed in various papers by Loizou (2008). Loizou attributes these failures to be the result of poorly understood amplitude anomalies due to lithology, AVO artifacts and spurious DHIs rather than hydrocarbons.
In this talk, we will show how development of a regional database and Integration of data from a range of geo-science disciplines has allowed the construction of a seismic interpretation and modelling framework that can be used both in the identification and de-risking of prospects as well as for reservoir characterisation purposes. ‘Dynamic rock physics’ modelling incorporating diagenetic (rate dependent) and pressure (effective stress) components allows the prediction of rock properties for an array of geological scenarios (deep burial, over-pressure, uplift etc).
Analysis has highlighted the potential for mis-interpretation of the seismic signature of reservoirs at various present day burial depths and offered additional explanations and mechanisms as to why these effects may be occurring.
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