摘要：裂缝性油藏占探明石油储量的28%以上，具有岩相变化大、非均质性强等特点。围绕裂缝性油藏复杂渗流模拟、缝网分布不确定性的关键科学问题，以准确描述缝网形态和分布为目标，采用计算模拟、反问题建模与优化求解相结合的方法，开展裂缝性油藏数值模拟与分层次缝网分布反演研究，主要内容包括：（1）嵌入式离散裂缝油藏数值模拟方法；（2）基于水平集理论的缝网分布高渗区域宏观反演预测；（3）基于主成分分析理论的离散裂缝缝网分布精细反演预测。通过本项目的实施，将形成一套利用油藏开发动态数据反演地下缝网分布的实用方法，为裂缝性油藏开发的缝网不确定性问题提供解决思路与理论支持，提高油藏采收率。

The fractured reservoir, which has changeable lithofacies and strong heterogeneity features, accounts for more than 28% of proven oil reserves. Aimed at detailed description of fracture network forms and distribution, fractured reservoir simulation and hierarchical fracture network distribution inversion research is carried out by using a combined method of computation simulation, inverse problem modeling and optimization, which is circle on the key scientific problems as complex simulation of fracture reservoir and uncertainty of fracture network distribution. The content is as follows:(1)embedded discrete fracture reservoir simulation;(2) macroscopic inversion prediction based on the level set theory in high permeability area of fracture network distribution;(3)precisely inversion prediction based on the principal component analysis theory of discrete fracture network distribution. With the implementation of this project, a practical method would be formed by utilizing dynamic data during reservoir development to inverse underground fracture network distribution, which could provide solutions and theory support for uncertainty problems of fracture network during fracture reservoir development and enhance oil recovery.