Journal of Northeastern University Natural Science ›› 2017, Vol. 38 ›› Issue (9): 1341-1346.DOI: 10.12068/j.issn.1005-3026.2017.09.026

• Resources & Civil Engineering • Previous Articles     Next Articles

3-D Grid Generation Method for Reservoir Numerical Simulation

CAO Kai, PAN Mao, SUN Peng, ZHANG Hui   

  1. School of Earth and Space Sciences, Peking University, Beijing 100871, China.
  • Received:2016-10-26 Revised:2016-10-26 Online:2017-09-15 Published:2017-09-08
  • Contact: CAO Kai
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Abstract: Because the application of unstructured grid is still need to be improved, a hexahedral-gridding method was designed in order to overcome limitations of the Pillar Grid when simulating complex faults and its non-orthogonality.The grid model is regular in XY direction and the discontinuous surface is presented as a stair-step style. First, a structural model is built, including faults and stratum; Secondly, the topological information and geometric elements of the structural model is extracted so as to build macroscopic topology model based on G-maps; Finally, a method of discretizing the geological surfaces into lots of tangent planes is used to generate grids. Cases have proved that the methods above are accurate and effective to generate the desired grid model.

Key words: reservoir numerical simulation, structural modeling, macroscopic topology, G-maps, grid generation

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