柴北缘南八仙油田古近系上部～新近系下部储层特征研究  

The Upper Paleogene-Lower Neogene Reservoir Characteristics of Nanbaxian Oilfield in the Northern Margin of Qaidam Basin

作　　者：贾艳艳[1,2,3] 邢学军 陈吉 张春燕[5] 王振 史基安[1] 孙国强[1] 

机构地区：[1]中国科学院油气资源研究重点实验室,甘肃兰州730000 [2]中国科学院研究生院,北京100049 [3]中石油冀东油田分公司勘探开发研究院,河北唐山063004 [4]中石油冀东油田分公司钻采工艺研究院,河北唐山063004 [5]中石油青海油田分公司勘探开发研究院,甘肃敦煌736202 [6]中石化华北石油工程有限公司录井分公司,河南郑州450006

出　　处：《石油天然气学报》2014年第8期18-26,3,共9页Journal of Oil and Gas Technology

基　　金：国家重点基础研究发展规划("973"计划)(2011CB201104);中国科学院油气资源研究重点实验室开放基金项目(KFJJ2012-05)

摘　　要：基于岩心、测井、薄片、扫描电镜、物性及压汞分析等资料,对柴达木盆地南八仙油田古近系上部～新近系下部砂岩储层特征进行了细致的研究,为油气藏勘探开发提供地质资料.结果表明：该套储层发育辫状河三角洲储集砂体,粒度较细,具有成分成熟度较低、结构成熟度中等的岩石学特征;储层物性中等,孔隙度、渗透率呈正相关关系,受成岩作用影响较弱;储集空间以原生粒间孔为主,孔隙结构为细喉道,孔喉分选中等,连通性较好.Based on data of cores,well logging,thin section,scanning electron microscopy(SEM),physical property and mercury injection,etc,the characteristics of Upper Paleogene-Lower Neogene sandstone reservoirs were carefully studied and geologic data were provided for the exploration and development of oil and gas reservoirs.The result indicates that braided delta sand bodies are mainly developed in this set of reservoirs with fine grain,low compositional maturity and medium structural maturity.Physical properties of the reservoirs are medium,and the porosity and permeability are positive correlation because the reservoirs are weakly influenced by diagenesis.The reservoir space of this set of reservoirs is mainly primary intergranular pores,the pore structure is fine throat,and pore throat is medium sorting with good connectivity.

关 键 词：储层特征 纵向变化 辫状三角洲 南八仙油田 柴达木盆地 古近系上部 新近系下部 

分 类 号：P618.13[天文地球—矿床学]