摘要
通过岩心观察、薄片鉴定以及物性与压汞数据分析,对白豹油田长63储层进行了岩矿特征研究,认为目标储层砂岩类型主要为长石砂岩及岩屑长石砂岩。详细分析了储层物性及微观孔隙结构特征,发现主要孔隙类型为长石溶孔和粒间孔,小孔微细喉为最优的孔喉组合。对区内长63储层岩石的成岩期次和类型、渗透率和孔隙度的最低下限进行了研究,结果表明研究区北部、中部区域经历绿泥石胶结等建设性成岩作用,储层物性较东部区域略好。
The rock and mineral characteristics of Chang 63 reservoir in Baibao Oilfield were studied through core observation,thin section identification and analysis of physical properties and mercury injection data,and it is held that the sandstone types of the target reservoirare mainly feldspar sandstone and lithic feldspar sandstone.The analysis of reservoir physical property and micro-pore structure characteristics shows that the main pore types of the reservoir are feldspar solution pore and intergranular pore,and the small pore-fine throat is the best pore-throat combination.The study on the stages and types of diageneses and the lower limits of permeability and porosity of Chang 63 reservoir rocks in the study area shows that the northern and central regions of the study area had experienced constructive diageneses such as chlorite cementation,where the reservoir physical properties are slightly better than those in the eastern region.
作者
李博克
谭成仟
LI Boke;TAN Chengqian(College of Earth Sciences & Engineering,Xi'an Shiyou University,Xi'an 710065,Shannxi,China)
出处
《西安石油大学学报（自然科学版）》
CAS
北大核心
2019年第1期50-54,75,共6页
Journal of Xi’an Shiyou University（Natural Science Edition）
基金
国家自然科学基金青年项目"深水重力流流态研究--以白云凹陷第四纪陆坡为例"(41302147)
关键词
孔隙结构
储层特征
长63储层
岩矿分析
白豹油田
鄂尔多斯
pore structure
reservoir characteristic
Chang 6 3 reservoir
rock and mineral analysis
Baibao Oilfield
Ordos Basin
