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Design and Implementation of 3D Subsurface Geological Model for Petroleum Exploration
Zahra Naseri
Petroleum Geologist
National Irainian Oil Company
Iran
Abstract
Nowadays, discovering new sources of petroleum has the utmost value to succeed in the petroleum industry. The first step in petroleum exploration is management and analysis many different types of data such as geological and topographical maps, satellite imagery, seismic surveys and cross sections, and existing infrastructure information. As the complexity of available data increases, GIS becomes an integrating technology that provides a strong foundation for solving contemporary problems. Most of the spatial data are expanded in three dimensions and the need for 3D information is rapidly increasing and 2D GIS analyses for petroleum exploration purposes have shown its limitations in some situations. In this case, we designed and developed a 3D GIS in order to manipulate and present all spatial and non-spatial data in the way which can manage perfectly. As petroleum industry needs to stimulate subsurface layers, we have also developed a 3D model for an anticline which had not been drilled. A virtual 3D subsurface model can help to find a suitable position for a wildcat well and improve the forecast plan. Another feature of the project is the superposition all UGC maps in different level at the same time. The earth can be simulated from the surface till the prospect accurately. The combination of maps led to an easier way of presentation and more valid interpretation of geological data. In this paper the benefit of using 3DGIS for creating a virtual 3D model will be described.
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