The Application of Seismic Anisotropy Technology in Fractured Carbonate Reservoir

The main production layer in Oseil field is carbonate rock in Manusela Formation, East Indonesia. The main storage and accumulation space of the carbonate is fractured porous media and the reservoir distribution possesses strong heterogeneity. With integrated utilize the petro-physical forward modeling and pre-stack seismic anisotropy analysis technology, we find a suite of techniques for fractured carbonate reservoir description, which is also suitable for the poor seismic quality. Compared with the traditional fracture detection method, such as coherence and stress field analysis, the seismic anisotropy analysis has the feature of high accuracy and reliability. There are two newly drilling wells in 2010 which are coincident with the prediction result. It also suggested the feasibility of the technology suite and the reliability of the workflow.