Abstract.

Today's exploration for hydrocarbon traps is, in many areas, characterized by smaller discoveries in subtle traps-perhaps in previously unexplored geological formations. At the same time, an increased pressure to minimize time from discovery to production is experienced, and the need for optimal utilization of all field related information is becoming increasingly obvious. This calls for accurate geometric and palinspastic basin descriptions on all scales and at any time from deposition up to the present. In this presentation a dynamic basin model is described, which is designed to utilize all available data at all scales, and to serve as one modelling tool from exploration to reservoir studies.

This challenge calls for the utilization of optimal data bases together with geological, as well as geophysical modelling and reservoir simulation tools. The core of- the concept is a 3-dimensional data model. The model must be developed to include basic geological and geophysical data as obtained in the earliest exploration stage, with the ability of being ‘infinitely’ expanded over the life-time of the field. Accordingly, such a model must be built on the best modern technology to obtain necessary solidity, long life and flexibility.

The data base is regarded as a core in a cluster of geophysical, geological and reservoir modelling tools. It is expected that such tools will undergo an enormous development in the near future. This demands that the central data base as well as the modelling tools are built by common standards, so that new versions and new tools can easily be incorporated.

1. INTRODUCTION

Although new areas still are to be opened, the number of mature hydrocarbon provinces which are available for hydrocarbon exploration is decreasing.

Combined with a pronounced pressure to explore with less cost and to exploit existing reserves more efficiently, this challenges the oil companies to better utilize their resources in terms of personnel, data, interpretation and simulation techniques. In mature areas the larger fields have already been explored, and only smaller discoveries, maybe in the form of subtle traps, in less favourable and less known formations, remain to be found. At the same time, there is pressure to minimize the time from discovery to production, and the need for optimal utilization of all relevant geological and geophysical information is becoming increasingly obvious. This calls for accurate geometric and palinspastic basin descriptions on all scales at any time in the basin history.

Centrally in meeting these challenges lies optimal data bases which are accessible for geophysical and geological modelling, as well as production simulation. Through times of exploration and production oil companies have accumulated enormous amounts of geophysical, geologi

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