oa Advances in 3-D geologic modeling at Saudi Aramco

3-D geologic modeling of Saudi Aramco oil and gas reservoirs has evolved over the last three decades. Technical processes have ranged from simple hand-drawn 2-D maps and cross-sections to using the latest, sophisticated 3-D modeling computer software and hardware technology. Early on, 2-D modeling was time-consuming and tedious. Interpretation results took longer to produce and critical decisions regarding drilling and field development were sometimes made at a cost. Later, as newer computer applications became available, modelers have had more technical capabilities designed to better image the subsurface geology and reservoir properties in full 3-D perspective. State-of-the-art technology was always at the forefront of any 3-D geological modeling practice at Saudi Aramco. The use of the geologic models varies from well planning and placement, field development, reserves calculation, strategic field optimization to enhanced field recovery. To leverage the largest gas and oil fields of the world requires embracing up-to-date technology in terms of the most modern modeling applications with high-caliber professionals. The aim of this presentation is to show the major technical advances that 3-D geologic modelers have implemented over the past 30 years with the goal of producing the most accurate representation of the geology of Saudi Arabia’s gas and oil reservoirs. Chronological illustration of modeling techniques will be covered based on the capabilities and limitations of the modeling applications.