摘要
柴达木盆地大面积发育湖相沉积,碳酸盐岩储层广泛分布,勘探潜力具大。通过近年来的攻关,以英西为代表的湖相碳酸盐岩储层特征逐渐明晰:①矿物组分类型多,黏土矿物、长英质、碳酸盐岩矿物混积,储层岩性复杂,通过统计储层岩性为泥质、含泥灰云岩;②发育四类储集空间,包括晶间孔、溶蚀孔、角砾化孔(洞)和网状裂缝,四类储集空间组合为两大类储层,广泛发育的孔隙型储层及局部发育的缝(洞)-孔隙型储层;③其中,孔隙型储层奠定了英西整体含油的基础,缝(洞)-孔隙型储层是高产的前提。
Large-scale development of lacustrine sediments in the Qaidam Basin,Widely distributed carbonate reservoirs,Exploration potential is great.Through research in recent years,The characteristics of lacustrine carbonate reservoirs represented by Yingxi gradually become clear:①There are many types of mineral components,Clay minerals,felsic,carbonate minerals,Reservoir lithology is complex,By statistics reservoir lithology is argillaceous and marl-bearing dolomite;②Development of four types of storage space,Including intergranular pores,dissolution pores,brecciated pores(holes)and reticular cracks,The four types of reservoir space are combined into two types of reservoirs,Widely developed porosity reser voirs and Locally developed fractures(holes)-porous reservoirs;③Among them,Pore-type reservoirs lay the foundation for overall oil content of the yingxi area,Fracture(hole)-porous reservoir is a prereq uisite for high production.
作者
任世霞
姜营海
贾生龙
张博策
REN Shi xia;JIANG Ying hai;JIA Sheng long;ZHANG Bo ce(Institute of Drilling and Production Technology,Qinghai Oil Field,CNPC,Dunhuang,Gansu Province 736202;Institute of Exploration and Development,Qinghai Oil Field,CNPC,Dunhuang,Gansu Province 736202)
出处
《内蒙古石油化工》
CAS
2020年第9期106-109,共4页
Inner Mongolia Petrochemical Industry
基金
中国石油青海油田分公司“英西E_3~2油藏分布规律及勘探开发一体化部署研究”(编号:研究院2018-技术-勘探-03)资助
关键词
柴达木盆地
英西地区
碳酸盐岩
储层特征
Qaidam Basin
Yingxi area
Carbonate
Reservoir characteristics
作者简介
任世霞(1985-),女,青海湟源人,硕士研究生,工程师。
