f 3D Seismic Inversion Orocual Field - Las Piedras, Monagas-Venezuela

Seismic inversion techniques, integrating 3D<br>poststack seismic data, impedance logs and<br>geological knowledge, are widely used as a first step<br>of lithoseismic reservoir characterisation procedures.<br>They produce acoustic impedance images which are<br>much more convenient for inferring reservoir<br>properties (Net to gross, Shaliness, Porosity, etc.)<br>than the conventional seismic.<br>These techniques were applied to the Las Piedras<br>formation in the Orocual field, Venezuela, using<br>IFP’s InterWell software.<br>The main objective of the study was to provide an<br>acoustic impedance distribution of the Intra Las<br>Piedras Fm. in order to detect and delineate lateral<br>variations or heterogeneities of shallow Miocene to<br>Pliocene sands.