Publications

The interpreted field is in the Baram Delta along the northern margin of Borneo, which sits between the actively colliding Eurasian, Pacific, and Australian plates. The north Borneo margin is a relative aseismic region with much of the ongoing structural reorganization due to gravity-driven processes. In the Baram Delta, Cycle V stacked shoreface sandstones were deposited, providing reservoir rocks for the Middle to Upper Miocene Sandstone Plays. Subsequent gravity-driven extensional faulting caused structural traps for Cycle V reservoirs from the Middle Miocene to Pliocene (Davis, 2014). Recent progress in seismic broadband processing and inversion technologies has produced innovative solutions to extend the bandwidth of seismic data. The resulting broadband seismic can be integrated with well and geological information in a Bayesian framework to predict elastic properties and enhance lithology distribution at a very fine scale (Escobar, 2006). An integrated approach incorporating nine wells and two seismic surveys was adopted to ensure the consistency of the broadband seismic with well data at various seismic processing steps. The processed seismic data includes two seismic surveys shot orthogonally from each other. Subsequently, a pre-stack geostatistical inversion was carried out to integrate well data with the broadband seismic to predict high resolution elastic and petrophysical properties to be incorporated into the reservoir model (Araman, 2011). The zone of interest was a succession of laminated sands over an average thickness of 3000 meters. As the two seismic surveys were strictly processed in the same manner, further interest was found for 4D signal in the deeper area highlighting the production effects seen in the field.