Seismic lithology discrimination in complex fluvial stratigraphy: Tenerife 3D 3C Survey, Middle Magdalena Valley (Colombia).

Abstract

Middle Magdalena Basin is an active producing region in Colombia, that in last years has been chosen to be developed by water and steam flooding. However complex stratigraphy has prevented to have detailed reservoir static models. Tenerife 3D3C experiment was conducted in 2009 as a first integral (from acquisition design to interpretation) application of multicomponent technology to discriminate lithology (sand and clays) in a Colombian field. Acquisition design resulted in a 480.000 traces/Km 2 density, 22.3 Km 2 survey. Petrophysics showed that density is the best V clay discriminant so the main objective was to obtain a good density estimation from surface seismic. Density from PP+PS joint inversion was more detailed and stable than density derived from PP simultaneous inversion and is currently guiding the location of new wells in the oilfield.