碳酸盐岩储层高电阻率影响因素探讨  

HIGH RESISTIVITY AFFECTING FACTORS OF CARBONATE RESERVOIR IN NORTH-EAST SICHUAN BASIN

作　　者：齐宝权[1] 张树东[1] 王兆年[2] 司马立强[1] 

机构地区：[1]西南石油大学 [2]西南油气田分公司

出　　处：《西南石油大学学报（自然科学版）》2007年第1期26-29,共4页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：与砂泥岩地层相比,碳酸盐岩地层常以高电阻率、深浅双侧向大幅度差异为特征。而影响碳酸盐岩地层电阻率高低的因素众多,由此造成储层的划分和流体性质解释难度较大。结合实测资料和模型模拟结果,对影响双侧向测量值和差异的各种因素逐一进行了分析,这些影响因素包括井眼大小、裂缝、岩性、流体电阻率、侵入深度等。总结了各种因素对双侧向测量值的影响程度,较好地解释了碳酸盐岩地层电阻率巨大起伏的原因和储层电阻率复杂多变的特性。该分析结果有助于更深入地认识碳酸盐岩地层中双侧向的变化规律,对储层进行更为精确的解释。Carbonate formation is characterized by higher resistivity and bigger difference of Dual and Shallow lateral logging compared with clastic formation. There are so many factors affecting the high risistivity of carbonate formations that it is difficult to identify the reservoir and interpret the property of fluids, the factors are analyzed which affect the values and differences of dual lateral logging combining the logging date with modeling results. The factors include borehole size, fracture, lithology, fluid resistivity, invasion depth etc. At last, the affecting degree to dual lateral logging is summarized and the reason of high resistivity and big fluctuating in carbonate interpreted. The conclusion is helpful to realize the change law of dual lateral logging of carbonate better as well as analyze the reservoir in detail.

关 键 词：双侧向 模型模拟 裂缝 饱和度 流体性质 侵入深度 

分 类 号：P631[天文地球—地质矿产勘探]