项目名称： 基于空间特征的孔缝介质多尺度数字岩心构建方法研究

项目编号： No.51504146

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 矿业工程

项目作者： 王鑫

作者单位： 山东省科学院

项目金额： 22万元

中文摘要： 岩心中孔缝特性的精细表征对于非常规油藏的评价及开发具有重要意义，建立有效的孔缝介质表征方法是孔缝介质精细表征中的难点问题。本项目针对如何基于空间特征表征的孔缝介质多尺度数字岩心这一科学问题，通过“点”化、量化裂缝空间开展裂缝的非平面特性的表征方法研究；通过沿骨架分步切割孔隙空间截面、孔隙空间分割等方法对孔缝截面形态及孔缝网络模型的构建要素开展研究；通过多级岩心图像匹配、差异位置定位“安装”以及部分反弹流场解释方法对孔缝空间多尺度表征方法开展研究，从而获得裂缝识别方法、孔缝网络模型构建以及多尺度表征等一系列方法，最终构建出一种基于空间特征的孔缝介质多尺度数字岩心构建方法，为缝洞型油藏的高效开发提供理论支撑。

中文关键词： 微观渗流；多尺度；格子-波尔兹曼方法；离散裂缝网络模型；网格技术

英文摘要： Multi-scale characterization of pore and fractures system are well developed in carbonate rock, and are also the main factor affecting the seepage, so to establish a set of multi-scale characterization methods studying on extraction and identification of fractures and pores is very important. In this project, We starts from geometry and topology characteristics of the fractured space, digital rock imaging, mathematical statistics, micro-nano scale molecular simulation, microcosmic seepage force etc., to establish a set of methods constructing digital rock of multi-scale fractures and pores, including new methods to describe and identify fractured space, methods to extract the skeleton of pore space based on the characteristics of the fractured space, new segmentation method of the pore space. A new scale upgrade scheme based on partial rebound theory is submitted in this project. To characterize feasibility of this project, all schemes are validated and demonstrated primarily in requisition. The research content provides theoretical contribution to exploitation with high efficiency of fracture-vug reservoir.

英文关键词： micro flow;multi-scale;lattice-bolztmann;fractured network;pore network