--> --> Abstract: Application of Shoreline Trajectory in Geomodelling, Cretaceous Helvetiafjellet Formation, Arctic Norway, by Erling H. Siggerud; #90082 (2008)

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Application of Shoreline Trajectory in Geomodelling, Cretaceous Helvetiafjellet Formation, Arctic Norway

Erling H. Siggerud
SGS AS, Ranheim, Norway

The aim of this paper is to show how a sequence stratigraphical model, can be transferred to the computer and thereby logically test the sediment distribution in time and space. For the past decade, computer geo-modelling has increased significantly given the ability to characterise the reservoir and run production testing and field economics. Commonly, the computer geomodel is made to replicate the geological model by deterministic or stochastic approaches. However, the principle of shoreline trajectory have made it possible to transfer the sedimentological model in a manner maintaining the logical understanding of the system rather than only trying to emulate it. In short, the relative relationship of the shoreline trajectories is used in the geomodelling. This enables visualisation and actively tests the consequence of the model a quantitative manner. Accordingly, any given shallow marine depositional model can be visualised and tested -maintaining the dynamics of the system rather than passively emulating it. This principle has been applied to the shallow to non-marine Early Cretaceous Helvetiafjellet Formation, Norwegian Arctic Island of Svalbard. Here excellent outcrops on a basin wide-scale has led to the formation been extensively studied over the past forty years delineating a wide range of depositional scenarios. However, never before have all the field data been systematically converted to a computer model to test the consequence in facies distribution of the various models. Using the approach outlined above, have resulted in a more coherent model - not from the computer model alone but from using the opportunity the geomodelling offers in bringing the qualitative sedimentological model forward by logically testing the consequences of our understanding.

AAPG International Conference and Exhibition, Cape Town, South Africa 2008 © AAPG Search and Discovery