顺序指示模拟技术及其在3D数字岩心建模中的应用  

Sequential Indicator Simulation Technique and Its Application in 3D Digital Core Modeling

作　　者：朱益华[1] 陶果[1] 

机构地区：[1]CNPC测井重点实验室中国石油大学,北京102249

出　　处：《测井技术》2007年第2期112-115,共4页Well Logging Technology

基　　金：国家自然科学基金资助项目(50374048)

摘　　要：传统的数值模拟孔隙微观结构的建模方法过于理想化和简单化;而用X射线超薄片图像技术来得到3D孔隙结构的高分辨率的图像却又过于昂贵和耗时。利用从现场得到的2D铸体薄片提供的地层信息作为条件数据,用顺序指示模拟技术可构建出3D孔隙介质模型,由此得到的数字岩心的孔隙结构可最大程度地与实际岩石接近。这种数字岩心不仅可用来精确预测岩心渗透率,而且还可作为其他物理特性模拟的共享对象。介绍了顺序指示模拟原理和地质统计学在3D数字岩心建模中应用原理的概率论表达式,3D数字岩心模型建立方法,以及3D数字岩心应用实例;认为岩石物理的研究应该向数字岩心方向发展。The traditional modeling method of numerical micro pore structure simulation is too idealization and simplification; while X-ray ultra-slice graphics technology needs too much cost and time to obtain a 3-dimensional pore structure graph with high definition. The method used to construct the 3D digital core model is the sequential indicator simulation technique, in which the conditional data are acquired from 2D epoxy-saturated thin sections obtained very easy from real cores. With this method, the pore structure of the digital core could approach the real rock with the most possibility. This kind of digital core is not only capable to accurately forecast permeability of a core, but to be a share object to simulate other physical characteristics as well. The probability expressions of the sequential indicator simulation technique and the geological probability applying to model 3D digital core, the method to construct the 3D digital core model, as well as the examples of 3D digital core application, are presented in this paper. It is believed that the research of petrophysics should be developed along the direction of digital core.

关 键 词：石油测井 孔隙结构模拟 随机建模 顺序指示模拟 变差函数 数字岩心 

分 类 号：O343.2[理学—固体力学] TP311.12[理学—力学]