An Integrated Approach for Overpressure Prediction in a Wild Cat High Pressure, High Temperature (HPHT) Exploration Well

Pore pressure prediction plays a very important role in well planning as exploration targets are shifting to deeper overpressured reservoirs. Pressure related problems in such zones are mainly associated with narrow operating windows resulting in severe well control incidents, sometimes even leading to early abandonment. Uncertainties in prediction models arise from input data, assumptions used in the workflow, and the complexity of the geological and structural conditions. It is important to analyse these uncertainties and develop an understanding of their sources prior to drilling so that various plans and mitigation systems can be put in place.