低渗低阻油藏开发特征分析

Exploitation characteristics of low permeability and low resistivity reservoir

刘德华 刘志森 汪伟英 王芳

长江大学油气开采工程湖北省重点实验室，湖北 荆州 434023

Key Laboratory of Oil and Gas Production, Hubei Province, Yangtze University, Jingzhou 434023, China

低渗低阻油藏是一类特殊油藏，其成因和开发特征是人们一直关心的问题。以中原油田文13北块为实例对相关问题进行了研究和讨论，主要包括：低阻油藏的成因与认识，低渗油田的单相和两相渗流特征，裂缝方向与水驱方向的夹角对开发效果的影响，油田开发过程中的产量、含水率及水驱变化规律。产量变化主要表现为初始产量高，递减快，生产稳定后产量递减符合双曲线递减规律。最后探讨该类油藏开发中容易出现的主要问题及形成原因，并提出相应的处理对策，对提高该类油藏开发效果有借签意义。

Low permeability and low resistivity reservoir is a kind of special reservoir and its contributing factor and development feature
are always concerned by people. In this paper, the related questions are studied by taking the northern part of Block Wen 13 in
Zhongyuan Oilfield as an example. The questions include the contributing factor and understanding of low resistivity reservoir, the
filtering flow characteristics of single-phase and two-phase of low permeability reservoir, the influence of the included angle between
the fracture orientation and waterflooding orientation on development effect. At the same time, the changing laws of production, water
content and waterflooding are researched during field development. The changing laws of production is obtained, which are mainly
high production and quick decline in initial stage. The production rate after stable producing fits to the hyperbolic decline law. At
last, we discussed some major problems that may appear easily during field development.