In this paper, we describe how we designed and built two 3D finite difference (FD) models for Bintuni Bay, Irian Jaya Barat to help us understand key subsurface components adversely affecting seismic data quality for clastic reservoirs below thick and karstified carbonates. Our modeling efforts consisted of four main steps: creation of realistic geologic models based on seismic interpretation; construction of 3D velocity and density models based on the geologic model and well data; generation of 3D FD shot records with dense, areal, receiver grids; and depth migration of subsets of shots and receivers corresponding to various acquisition geometries.

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