The construction of prototype models in reservoir modeling

The establishment of the geological databases for reservoir rocks is a key step in reservoir modeling, and may provide basic data and various statistical parameters for reservoir modeling. The present paper deals with main steps and contents for the establishment of the geological databases. In the case of insufficient information and parameters on reservoir rocks, it is necessary to construct prototype models in order to determine some important parameters for the reservoir modeling. These parameters include width (length)/thickness (ratios), symmetrical coefficients, horizontal variation functions and so on. Three methods are introduced in detail into the construction of prototype models including:outcrops, close-spaced well areas and simulation experiments of modern fluvial and lacustrine sediments.