Abstract

Three-dimensional (3-D) seismic surveys have been a major tool in the exploration and exploitation of hydrocarbons. Conventional 3D designs were mainly concentrated on analysis of bin attributes in particular: fold, offset distribution, and azimuth distribution. These survey designs assume that Common Mid Point (CMP) coverage and Common Reflection Point (CRP) coverage are equivalent, but this is not the case if the investigated structure is complex. In such cases sub surface mapping may not be accurate, therefore illumination studies should be performed for better understanding of sub surface. Subsurface illumination studies are not most often applied to feasibility studies and survey design, but the concept offers a wider range of applications. Therefore 3D modeling studies are crucial and have become a common way to deal with survey design. There are many ways to perform illumination studies; the most common are binning methods. A 3D modeling study was carried out at Khoraghat