桑合油田油水相对渗透率曲线类型及其驱替模式探讨  

Relative Permeability Curves of Oil and Water and Its Displacement Pattern in Sanghe Oilfield

作　　者：杨建成[1] 莫小国[1] 谢利华[2] 卢新莉[1] 

机构地区：[1]中原油田分公司勘探开发科学研究院,河南濮阳457001 [2]中国地质大学(北京)能源学院,北京100083

出　　处：《石油天然气学报》2008年第05X期284-287,共4页Journal of Oil and Gas Technology

摘　　要：根据桑合油田砂砾岩储层相对渗透率的实验资料,按水相相对渗透率曲线形态划分,其相对渗透率曲线可分直线型和下凹型两种类型。研究表明,水相相对渗透率曲线形态与储层岩性、非均质性、润湿性、渗透性、压实程度和粘土矿物等因素有关;形成下凹型水相相对渗透率曲线的主要原因是驱替过程中堵喉效应。无论是直线型相对渗透率曲线,还是下凹型相对渗透率曲线,油水相对渗透率比值与含水饱和度均呈较好的指数关系模式,其驱替模式均表现为丙型水驱曲线特征。Based on the data reservoir relative permeability of sandstone reservoirs in Sanghe Oilfield,the oil-water relative permeability curves of Sanghe oilfield could be classified into straight line and downward concave types.Statistical researches show that shapes of phase permeability to water are in connection with reservoir lithology,heterogeneity,wettability,permeability,degree of compaction and clay minerals factors.Mainly reasons include downward concave curves are due to plugged throat effect during displacement.Whether straight line or downward concave types,relational expression of the oil-water relative permeability ratio and water saturation is exponential model and its displacement pattern assumes Type C water drive curve.

关 键 词：桑合油田 砂砾岩储层 相对渗透率曲线 驱替模式 水驱曲线 

分 类 号：TE312[石油与天然气工程—油气田开发工程]