复杂非均质地层的等值线生成算法研究

等值线图是复杂油气藏地质研究中的一类重要表示形式。针对地层数据特点，研究和分析了复杂非均质地层数据等值线绘制方法的不足，提出一种新的分区方法，实现了带断层的数据集合划分。基于Delaunay三角剖分算法，并以几何多边形为雏形，建立了带约束的三角网格模型。采用约束Delaunay三角网的拓扑结构，选用改进的反距离加权插值算法，有效地解决了断层两侧高程值问题，并结合实际应用要求在VC++与OpenSceneGraph的开发环境下，实现了非均质带断层的地层等值线的绘制。通过对国内某采油厂的实际油气储集地层数据等值线图的绘制和可视化，证明了方法的可行性和准确性。

Research of contour generation algorithm for complex heterogeneous reservoir. computer engineering and applications

Contour map is an important type of representation in the study of complex reservoirs. Aimed at the characteristics of formation data, this paper firstly analyzed the shortcomings of the contour drawing method and proposed a new partition method, which realizes the partition of data sets with faults. Then it established a triangular mesh model based on the Delaunay triangulation algorithm and geometric polygons. Using the topology of constrained Delaunay triangulation and improved inverse distance weighted interpolation algorithm, this paper solved the problem of elevation values on both sides of the faults. In the development environment of VC++ and OpenSceneGraph, this paper realized the contour drawing of the stratum with heterogeneity fault. Through the drawing and visualization of the contour map of the actual oil and gas reservoir data, it proves the feasibility and accuracy of the method.