稠油相对渗透率曲线影响因素分析  

Affecting factors of relative permeability curve in heavy oil reservoir

作　　者：阳晓燕 杨胜来[2] 李秀峦[3] 

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300452 [2]中国石油大学(北京)石油工程教育部重点实验室,北京102249 [3]中国石油勘探开发研究院,北京100083

出　　处：《断块油气田》2011年第6期758-760,共3页Fault-Block Oil & Gas Field

基　　金：国家科技重大专项"水平井热力开采近井流动机理研究与提高稠油蒸汽驱效率技术"(2008ZX05012-001)

摘　　要：油藏相对渗透率是油田开发设计和分析的一个重要地层参数,实验室中常通过分析岩心非稳态驱替数据获得。文中通过不同的实验温度、束缚水饱和度,以及不同的驱替方式、CaCO3沉积研究稠油油藏相对渗透率曲线的变化。实验结果表明:实验温度、束缚水饱和度、驱替方式对稠油油藏相对渗透率曲线的形状、等渗点、残余油饱和度,以及残余油饱和度对应的油相渗透率有重要影响;实验温度和束缚水饱和度越高,相对渗透率曲线特征越好;蒸汽驱相对渗透率曲线特征好于水驱;CaCO3沉积后残余油饱和度较低,油相相对渗透率较高,储层亲水性明显。Relative permeability of reservoir is an important formation parameter of developing design and analysis of oilfield, which can be gotten through the analysis of unstable-state displacement data of core in laboratory. This paper discusses the relative permeability curve change of heavy oil reservoir according to different experimental temperature, different bound water saturation, different displacement pattern and CaCO3 deposition. Study shows that the experimental temperature, bound water saturation and displacement pattern indicate a major impact on the shape and isotonic point of relative permeability curve, residual oil saturation and the oleic permeability corresponding with residual oil saturation. The higher experimental temperature and bound water saturation, the better the characteristics of relative permeability curve are. The corresponding displacement pattern is steam flooding. The residual oil saturation is low after CaCO3 deposition, with oleic permeability high and water wettability of reservoir obvious.

关 键 词：相对渗透率 影响因素 稠油 驱油效率 

分 类 号：TE345[石油与天然气工程—油气田开发工程]