--> Abstract: Understanding the Pore Pressure, Burial History and Rock Properties Using 3D Basin Modeling, by Abid G. Bhullar; #90105 (2010)

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AAPG GEO 2010 Middle East
Geoscience Conference & Exhibition
Innovative Geoscience Solutions – Meeting Hydrocarbon Demand in Changing Times
March 7-10, 2010 – Manama, Bahrain

Understanding the Pore Pressure, Burial History and Rock Properties Using 3D Basin Modeling

Abid G. Bhullar1

(1) Exploration Resource Assessment Department, Saudi Aramco, Dhahran, Saudi Arabia.

Three dimensional modeling of the petroleum system offers the possibility of evaluating the pore pressure and filling history of tight gas reservoirs by integrating different processes involved in the evolution of sedimentary basins and corresponding pore fluids. This approach also provides the possibility of evaluating the rock properties combined with the depositional history of the basin, which ensures a more geologically coherent process.

Conventional pore pressure prediction workflows such as seismic velocity analysis, petrophysical methods and real time monitoring of drilling operations have their limitations in this data constrained setting and play. In many of these areas with deep and tight reservoirs, poor seismic and quality calibration data, complicate the pore pressure prediction. The data from these methods is further limited by their static nature, whereas basin modeling provides a dynamic approach.

In this study, 3D basin modeling results were presented from the South Ghawar area of the Arabian Basin where pore pressure evolution combined with the filling history and rock properties of reservoirs was investigated. In addition, the effective stress and porosity trends were modeled through time to understand the controls on reservoir deliverability.