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Elaboration of a Giant Fractured Carbonate Field Development Based on Long Multilateral Wells and New Reservoir Characterization Model for Haradh Increment Three Field, Ghawar, Saudi Arabia


Le Maux, Thierry1, Sylvain Sarda1, Tony R. Pham2, Nabeel Al Afaleg2 (1) Beicip-Franlab, Rueil Malmaison, France (2) Saudi Aramco, Dharan, Saudi Arabia


Haradh Increment 3 is the Southern part of Ghawar, the world largest oil field located in Saudi Arabia. The reservoir is 30 km long with several billions barrels of initial oil in place in the Arab-D formation. It includes a few wells producing since 1964 and was not further developed so far. The field is characterized by the presence of major heterogeneities such as long fracture corridors, super-permeability bodies and a tar barrier, that have a large impact on its dynamic behavior. A full field reservoir study was conducted to elaborate a Master Development Plan that maximizes both the plateau duration and the long term recovery. This Master Development is based on the use of long multilateral wells. This paper presents: „h The reservoir characterization mainly focused on super-permeability bodies and fracture corridors. „h The construction of the dual media simulation model and the history matching of the field from 1964 up to now. „h The Master Development Plan study including phenomenological studies on sector models to determine the optimum strategy for the use of multilateral wells in terms of type of wells, location, drilling sched­ule, water shut off strategies. The optimization of the master development plan took into account not only the plateau duration and long term recovery but also the overall reservoir sweep efficiency and the associated costs. Moreover, the impact of super-permeability bod­ies and fractures on field performance was assessed in terms of pressure maintenance, water fingering and well productivity.