西南石油大学学报(自然科学版) ›› 2006, Vol. 28 ›› Issue (2): 32-35.DOI: 10.3863/j.issn.1000-2634.2006.02.009

• 石油与天然气工程 • 上一篇    下一篇

油藏任意约束平面域PEBI网格的生成算法

向祖平1 张烈辉1 陈中华1 陈平2 苏领3 马亮4
  

  1. (l.“油气藏地质及开发工程”国家重点实验室·西南石油大学,四川成都610500;2.大庆油田有限责任公司第四采油厂;3.新疆石油工程建设有限责任公司;4.新疆克拉玛依市勘探开发研究院开发所)
  • 收稿日期:2005-03-07 修回日期:1900-01-01 出版日期:2006-04-20 发布日期:2006-04-20
  • 通讯作者: 向祖平

ALGORTTHM FOR CONSTRUCTING PEBI MESH OF ARBITRARILY SHAPED AND CONSTRAINED PLANAR DOMAINS IN OIL RESERVOIR

XIANG Zu-ping 1 ZHANG Lie-hui 1 CHEN Zhong-hua 1 et al.

  

  1. ( Southwest Petroleum University,Chengdu Sichuan 610500, China)
  • Received:2005-03-07 Revised:1900-01-01 Online:2006-04-20 Published:2006-04-20
  • Contact: XIANG Zu-ping

摘要: 针对油藏任意约束平面多边形区城提出了一种实用的局部正交化网格(PEBI)生成葬法。首先对边界顶点和区域内部散乱点按扫描方式排序,依次扫描各点生成新的三角形,再扫描新生成的三角形中不满足Delaunay准则的三角形,进而不断的处理这些不合理三角形最终完成整个区域的三角网格化,最后连接每个三角形的外接圈固心生成PEBI网格。剖分过程中采用了弹性平清和对角线交换优化方法,很容易实现局部区域的最优化剖分。通过平面映射法就可以应用到油藏的三维PEBI网格剖分,因此本算法具有很好的可操作性和实用性。

关键词: 局部正交化网格, 算法, 三角形网格, 网格剖分

Abstract: An algorithm for constructing PEBI mesh of arbitrarily shaped and constrained planar domains was presented. When it acted on polygonal domain, all the vertices of boundary edges and scattered points within the domain were sorted in scan man-ner. Each time a feasible vertex was taken to generate a new triangle on known edge, then scanning these triangles which didn't
meet the Delaunay rule in these new triangles and continually dealt with them until the whole domain is triangulated. Finally, connecting each circumcircle center of these triangles, PEBI mesh~generated. Elasticity smoothing and swapping diagonal of quadrilateral methods were applied to locally optimize the cell form.By plan mapping, It could be applied to 3D mesh of reservoir. Ap-
placation of the method was proven that it was practicable.

Key words: PEBI mesh, algorithm, triangulation, mesh generation

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