Abstract

Regional depositional trend of the geological formations during and after sedimentary deposition play a crucial role in terms of lithofacies connectivity and heterogeneity. This process will not only help to define shape, size and orientation of different lithofacies but also help in petrophysical property population in 3D reservoir modeling. To capture the facies architecture, its connectivity, size, shape, orientation, proportion and distribution, various methods have been adopted in industry. Conceptual geological model based on geological understanding and sediment depositional trend identification has been popular over the year but this has the limitation of subjectivity of the conceptualization of the model with individual. To overcome this problem, geostatistical techniques supported by geological concept is widely accepted in the industry to build the realistic model. Geostatistics is an indispensable tool and technology for reservoir description which deals with the spatial relationship between data point in the geological context. These tools and technologies works on the numerical values of the property in the geological formation recorded by different type of tools and methods. This also provides logical, numerical model close to realistic behavior of the strata in sedimentary process thus reducing uncertainty in reservoir property population