面向石油勘探的网格变形

发布时间：2018-03-10 07:18

本文选题：石油勘探　切入点：三维地质建模　出处：《浙江大学》2015年硕士论文　论文类型：学位论文

【摘要】：在石油勘探领域中,常常需要利用各种不同的勘探技术来获取地质数据,再利用计算机可视化技术对复杂的三维地质模型进行表示,从而让地质学家能够更加直观地观察地质环境的构造和特征,最终更好地确定油气资源的位置。地质数据的可视化是通过对地下地质结构进行三维地质建模来完成的。由于不同属性的物质区域有相互接触的关系,所以不能单独对每个区域进行建模,而应将其组织在一起进行共同操作。本文在研究和分析现有网格变形技术的基础上,提出利用网格变形来建立地下地质结构模型的算法。首先使用一个网格模型来表示地下地质结构的整体形状,然后通过对该模型进行网格切割来得到地质结构中各个子区域的网格模型,由于实际中每个区域形状并不规整,最后需要通过网格变形来调整模型形状。考虑到地下地质结构的相互接触性,一个网格模型变形时,与它相邻的网格模型也应有相应变形,本文利用二叉树结构来建立模型之间的层次关系并建立相关模型之间的顶点对应关系,从而在一个网格模型进行变形之后,自动进行变形传递改变周围网格模型的形状。实验结果表明,通过本文的方法,可以有效地建立较为复杂的地下地质结构。
[Abstract]:In the field of oil exploration, often need to obtain data using various geological exploration techniques, and then by using the computer visualization technique for complex three-dimensional geological model, allowing geologists to observe the structure and characteristics of the geological environment, and ultimately to better determine the oil and gas resources. Geological data visualization is to by 3D geological modeling of the underground geological structure. Because of the contact area of the different attributes of the material, it is not alone in each region is modeled, and it should be organized together by common operation. This paper analysis and based on the existing grid deformation technology, proposed the use of mesh deformation to establish geological the underground structure model algorithm. First use a grid model to represent the overall shape of the underground geological structure, and then through the The model of mesh cutting to get sub grid model of regional geological structure, because each region in the actual shape is not regular, the need to adjust the model shape through the mesh deformation. In consideration of the mutual contact of the underground geological structure, the deformation of a mesh model, mesh and its adjacent should also have the corresponding deformation in this paper, using two binary tree structure to establish the hierarchical relationship between the models and the corresponding relationship between the vertex model, after which deform in a mesh model, automatically change the deformation transfer week lattice shape fence. The experimental results show that this method can effectively establish the underground geological structure is more complex..

【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;TP391.41

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