The spatial and temporal distribution of subsurface temperature is of major importance for the petroleum prospectivity of a sedimentary basin. The thermal history controls the maturation of source rocks and the quality of reservoir rocks. The porosity loss associated with quartz cementation is directly dependent on temperature ( ).

Thermal modeling is part of basin modeling ( ). Conventional basin modeling is driven by input from the geological disciplines and geochemistry. We present an alternative integrated approach, where emphasis is put on geophysical observations. In a frontier setting, this typically includes 2D regional seismic lines and stacking velocities, gravity and magnetics, and preferably one or more wells for local calibration.

The proposed methodology is demonstrated with a case example from the northern North Sea.


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