河流相储层层内流动单元数值模拟研究  

Numerical simulation research on intrastratal flow unit in fluvial reservoir

作　　者：白振强[1] 杜庆龙[1] 王曙光[1] 凌阳[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2008年第3期55-58,共4页Petroleum Geology & Oilfield Development in Daqing

摘　　要：为了确定利用渗透率差异划分层内流动单元划分的界限,根据流动单元的定义,设计了层内正韵律非均质模型,利用Eclipse数值模拟软件通过理论模型的模拟,研究了河流相储层层内非均质正韵律储层不同渗透率级差下垂向各部分的水淹特征、水淹规律和采出程度的关系。模拟结果表明储层层内渗透率的相对大小决定了注入水驱油自然形成的通道。不同厚度储层划分层内流动单元的界限明显不同,二者呈明显的正相关关系。通过理论模型验证,提出了层内流动单元划分的渗流差异指标,为层内流动单元的划分提供主要的依据。In order to determine division limitation of intrastratal flow unit by using differences of permeability, intrastratal positive rhythm heterogeneous model is designed based on the definition of flow unit. The relatiouships of water- flooding characters, water-flooding rules and production degree in vertical in intrastratal positive rhythm heterogeneous reservoir with various ratio of permeability in fluvial reservoir are studied with numerical simulation software of Eclipse. Results indicate that, flow path of injected water depends on relative permeable values. Limitation for dividing intrastratal flow unit by positive rhythm with various thicknesses is obvious different. The thicker the reservoir is, the higher the limitation is. There is a positive correlation between the permeability ratio index and the thickness of fluvial reservoir. These results provide an important basis for the division of intrastratal flow units.

关 键 词：河流相储层 层内流动单元 渗透率级差 层内非均质性 数值模拟 

分 类 号：TE319[石油与天然气工程—油气田开发工程]