摘要
随着鄂尔多斯盆地勘探开发程度的不断增强,对子长油田长2储层岩石学特征及储集特征进行了深入研究,为油藏高效开发提供地质依据。综合利用储层砂岩薄片鉴定、铸体分析、压汞分析、测井分析等方法,对子长油田长2储层岩石学特征、储层物性特征、储集特征进行系统研究。结果表明:研究区岩性以浅灰、灰白色块状细砂岩为主,属中-低渗透储层;岩石粒间孔与溶蚀孔发育,为细喉型储层,非均质性突出;储层孔隙结构类型分为I类中孔中细喉型、II类中孔细喉型、III类中-小孔微细喉型、IV类小孔微喉型4类,I类中孔中细喉型为本区主要储集空间和渗流通道。
With the development of exploration and development in Ordos Basin,it is necessary to study the petrological and reservoir characteristics of Chang 2 reservoir in Zichang oilfield,in order to provide geological basis for efficient development of the reservoir.In this study,the methods of thin section identification,casting analysis,mercury injection analysis and well logging analysis are comprehensively used to systematically study the petrological characteristics,physical properties and reservoir characteristics of Chang 2 reservoir in Zichang oilfield.The results show that the lithology of the study area is mainly light gray,gray white block like fine sandstone,which belongs to medium low permeability reservoir;the intergranular pores and dissolution pores are developed,which are fine throat type reservoir with outstanding heterogeneity;the pore structure types of the reservoir are divided into four types:I medium pore fine throat type,II medium pore fine throat type,III medium pore fine throat type,IV small pore micro throat type,and I medium pore medium fine throat type is the main reservoir space and seepage channel in this area.
作者
黎胜男
崔英敏
石观涛
李庆龙
房永生
李丽
Li Shengnan;Cui Yingming;Shi Guantao;Li Qinglong;Fang Yongsheng;Li li(School of Earth Sciences,Yangtze University,Wuhan,Hubei,430100,China;PetroChina ndustrial Group Company,Xi’an,Shaanxi,710016,China;No.11 oil production plant of PetroChina Changqing Oilfield Company,Xifeng,Gansu,745000;The exploration enterprise department of QingHai oilfield company,736202,GanSu,Dunhuang;Exploration and Development Research Institute of QingHai oilfield company,GanSu,Dunhuang,736202)
出处
《新疆地质》
CAS
CSCD
北大核心
2020年第4期512-515,共4页
Xinjiang Geology
关键词
孔隙结构
岩石学特征
储层特征
长2油组
Pore structure
Petrological characteristics
Reservoir characteristics
Chang 2 reservoir
