Delineation Stratigraphic Features Using Spectral Decomposition and AVO in B Field, Malay Basin

In the search for new hydrocarbon resources to optimize field development plan, delineation of stratigraphic features is becoming an important objective in the oil and gas industry. In the Malay Basin, most of the stratigraphic features are the channel systems which are filled up with either shales or sandstones (Mazlan B.M. et al., 1999). The sand-filled channels are potential targets of hydrocarbon accumulations, while the shale-filled channels can act as trap seal or barriers to fluid flow among reservoirs during field development. Their impacts on exploration and development have been observed from several fields in both northern and southern parts of the basin. Therefore the degree of accuracy in mapping the channel system is crucial to a proper evaluation of the reservoirs, which in turn will help improve the reserves base during the various stages of the field development. In this case study, a suitable methodology and workflow have been applied to address the above challenges for B field development.