改进约束三角网在沉积相带图中的应用研究.pdf

第24卷摇 第11期 计 算机 技 术 与发 展 Vol.24摇 No.11 2014年11月 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 COMPUTERTECHNOLOGY AND DEVELOPMENT摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 Nov.摇 2014 改进约束三角网在沉积相带图中的应用研究 尚福华,冀摇 宇,曹茂俊 (东北石油大学计算机与信息技术学院,黑龙江 大庆 163318) 摘摇 要:针对在沉积相带追踪中,常规三角剖分算法构造的三角网无法自动解决河道砂体跨井排不连通问题,提出了一种 相带边界线自动识别方法。 该方法的关键步骤是采用逐点插入法先生成无约束三角网;再根据河道砂体连通情况插入虚 拟井,并通过该虚拟井建立跨井排井的连通线,将这两条线作为约束边插入第一步生成的三角网中,将三角网部分重构, 形成最终约束三角网,对该三角网进行相带边界追踪。 系统前端采用.NET 网页框架和Applet 网页嵌入技术,核心绘图功 能采用Java2D绘图技术,效果良好。 关键词:约束三角网;两步法;虚拟井;沉积相带边界线 中图分类号:TP391摇 摇 摇 摇 摇 摇 摇 文献标识码:A摇 摇 摇 摇 摇 摇 文章编号:1673-629X(2014)11-0242-04 doi:10.3969/j.issn.1673-629X.2014.11.061 Application Research on Improved Constrained Triangular Irregular Network for Sedimentary Facies Maps SHANG Fu-hua,JI Yu,CAO Mao-jun (School of Computer Information Technology,Northeast Petroleum University, Daqing 163318,China) Abstract:In sedimentaryfaciestracing,thetriangularirregularnetworkconstructedbytheconventionaltriangulationalgorithmcannotau鄄 tomatically solve theproblem ofunconnected the channel sand on different well array,put forward an automatic identification method of the sedimentaryfaciesbordercurve.Firstofall,themethodadoptstheincrementalinsertingalgorithmtogenerateunconstrainedtriangular irregular network.Secondly,insert virtual wells according to the channel sand body connectivity,and establish connected line of wells which are on thedifferentwellarraythroughthevirtualwell,theninsertthetwolinesasconstraintboundarytotheconstrainedtriangular irregular network that generated inthefirst step,reconstructingapart ofthetriangularnetwork,formingthefinalconstrainttriangulation, and tracing the triangularnetwork faciesbound