新北油田馆上段储层电阻率特性及影响因素  

Study on resistivity characteristics and influencing factors of Upper Guantao reservoir in Xinbei Oilfield

作　　者：齐陆宁[1,2] 杨少春[1] 时丕同[2] 杜维雷[2] 

机构地区：[1]中国石油大学(华东)地球资源与信息学院,山东东营257061 [2]胜利油田分公司海洋采油厂,山东东营257237

出　　处：《断块油气田》2011年第3期301-304,共4页Fault-Block Oil & Gas Field

基　　金："十五"国家重点攻关项目"大中型油田勘探开发关键技术研究"(2003BA613A-02)

摘　　要：通过对新北油田油气层、油水同层及水层围岩的电阻率特性分析,认为该区电阻率差异较大,既存在正常油气层的电阻率特征,又存在低阻油气藏的电阻率特征。研究总结有如下规律:该区油气层束缚水饱和度越高,电阻率越低;油层厚度越薄,电阻率越低;构造幅度越小,电阻率越低;地层水矿化度越大,电阻率越低;油水系统越复杂,电阻率越低;原油性质好,钻井液侵入后的油层电阻率相对较低。最后,从油气藏成因角度总结出,该区低阻油气层形成的最根本原因是受到区域的构造背景、沉积环境成藏过程等控制。对于此类油层的认识,要综合考虑以上各种因素,建立相关的解释模型才能进行准确判断和识别。By studying the resistivity characteristics of oil-gas layer,oil-water layer,water layer and the surrounding rock of Upper Guantao reservoir in Xinbei Oilfield,we considered that the resistivity in this area has great difference,which not only has the characteristics of normal reservoir,but also has the resistivity characteristics of low resistivity reservoir.Study shows that the higher the irreducible water saturation is,the lower the resistivity is;the thinner the oil layer is,the lower the resistivity is;the smaller the structure amplitude is,the lower the resistivity is;the higher the reservoir water salinity is,the lower the resistivity is;the more complex the oil-water system is,the lower the resistivity is.If the oil property is good,the oil layer resistivity after the mud invades is relatively low.Finally,from the reservoir genetic features,this paper sums up that the low resistivity reservoir is controlled by the regional structural setting,depositional environment and accumulation processes.In order to accurately identify and understand such reservoirs,we must consider all influencing factors and build the related interpretation models.

关 键 词：电阻率特征 低阻油层 影响因素 馆上段 

分 类 号：P631.8[天文地球—地质矿产勘探]