基于岩石微观特征及多场耦合数值模拟的碳酸盐岩裂缝量化预测研究

项目名称： 基于岩石微观特征及多场耦合数值模拟的碳酸盐岩裂缝量化预测研究

项目编号： No.41272141

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 李静

作者单位： 中国石油大学（华东）

项目金额： 84万元

中文摘要： 裂缝性碳酸盐岩油气藏已成为近年来石油增储上产的重要新领域。裂缝是碳酸盐岩储层重要的储集空间及主要的渗流通道，搞清楚碳酸盐岩裂缝发育程度、分布规律及裂缝通道的有效性，对此类油气田勘探开发影响甚大。本研究拟综合集成扫描电镜、荧光、红外和拉曼光谱等手段，采用数据融合的方法，建立岩心显微光谱综合分析系统，在光谱和空间两个方面对样品进行三维立体分析，利用图像数字化技术，将其转化成物化参数(渗透系数、弹性模量等)，准确揭示裂缝(包括裂缝充填物、包裹体)的微观特征及显微空间分布规律，研究裂缝成因机制及形成期次，判断裂缝的有效性；针对碳酸盐岩处于高地温、高地应力的特点，研发"碳酸盐岩多场耦合裂缝预测分析软件"，将微观物化参数及传统方法的岩石力学参数分别应用于该软件进行数值模拟；综合分析岩石裂缝微观特征、数值模拟的结果，建立多参数量化预测裂缝发育及其分布的新模型，为此类油气田勘探开发提供一种先进的技术手段。

中文关键词： 碳酸盐岩；裂缝预测；微观特征；岩石力学特征；多场耦合

英文摘要： In recent years, fractured carbonate reservoir has become the important new field of petroleum reserves. Fracture is the important reservoir space and the main fluid flow channel of carbonate reservoirs. To figure out the development degree, distribution and the effectiveness of carbonate fracture has a great impact on the exploration and development for such oil-gas field. In this study, the scanning electron microscopy, microscopic fluorescence, infrared and Raman spectroscopy and other techniques will be comprehensively integrated, and the method of data fusion will be applied to establish analysis system of inclusion microscopic spectrum. The three-dimensional analysis and recognition will be conducted for samples at two aspects of spectrum and space, and the digital image processing technology will be led into, it will be converted into the physicochemical parameters (permeability coefficient, elastic modulus, etc). The microscopic features of rock (include fracture filling, fluid inclusions) and the microscopic spatial distribution will be effectively revealed, fracture formation mechanism and forming period will be researched, then the effectiveness of fracture can be judged. The software of fracture prediction and analysis of multi-field coupling in carbonate rock is self-developed for the characteristic

英文关键词： carbonate rock；fracture prediction；microcosmic characters；rock mechanics characteristics；multi-field coupling