基于FZI的致密砂岩渗流特征分析

发布时间：2018-05-23 09:22

本文选题：致密岩性 + 渗流特征　；参考：《西安科技大学学报》2017年03期

【摘要】：为解决致密岩性油气藏储层非均质强渗流特征复杂,剩余油富集规律不清的问题,以靖边油田为例,运用Amaefule提出的流动分层指标法,建立流动单元分类标准图版,进而确定出流动单元类型。通过岩心归位建立孔、渗透率的解释模型,求取各井点FZI值,划分平面流动单元,采用单井劈分法研究剩余油的分布规律,分析流动单元类型与剩余油分布响应关系。结果表明致密岩性储层的渗流特征体现流动单元类型与剩余油的响应关系,流动单元类型与井网完善程度对剩余油分布均有明显控制作用,井网完善程度较低时,流动单元指数越高,单井的剩余储量越大,井网完善程度较高时,在流动单元的过渡区剩余油的储量较大。利用FZI流动分层指标法研究致密岩性储层的渗流特征,可以更加有效地指导开发剩余油。
[Abstract]:In order to solve the problem that the heterogeneous strong seepage characteristics of tight lithologic reservoirs are complex and the rules of remaining oil enrichment are not clear, the standard chart of flow unit classification is established by using the flow stratification index method proposed by Amaefule, taking Jingbian Oilfield as an example. Then the type of flow unit is determined. The interpretation model of porosity and permeability is established by core homing, the FZI value of each well point is obtained, the plane flow unit is divided, the distribution law of remaining oil is studied by single well splitting method, and the relationship between the type of flow unit and the distribution response of remaining oil is analyzed. The results show that the percolation characteristics of tight lithologic reservoir reflect the response relationship between the flow unit type and the remaining oil, and the flow unit type and the well pattern perfection degree have obvious controlling effect on the remaining oil distribution, and when the well pattern perfection degree is low, the flow unit type and the well pattern perfection degree have obvious control to the remaining oil distribution. The higher the flow unit index is, the larger the remaining reserves of single well are, and the larger the remaining oil reserves are in the transition area of the flow unit when the well pattern is perfect. Using FZI flow stratification index method to study the percolation characteristics of tight lithologic reservoirs can guide the development of remaining oil more effectively.
【作者单位】：延安大学石油学院;延长油田股份有限公司靖边采油厂;延长油田股份有限公司定边采油厂;
【基金】：国家自然科学基金(61379026) 延安市科学技术研究发展计划项目(2013-KG01)
【分类号】：TE31

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