摘要
为了充分认识槐树庄地区长7油层组储层特征,并提出合理的分类评价方法,综合运用砂岩普通薄片、铸体薄片、扫描电镜和压汞资料等,对研究区长7油层组储层岩石学特征、储集空间特征及物性特征进行了研究,并分析了成岩作用对储层物性的影响。结果表明,研究区长7油层组储层主要以长石砂岩为主,胶结类型主要为薄膜—孔隙式和孔隙式;储层孔隙度平均为8.29%,渗透率平均为0.23×10^-3μm^2,属于低孔—特低渗储层;并根据排驱压力和最大进汞饱和度,将研究区长7油层组储层物性特征简单划分为三类。压实作用和胶结作用对储层孔隙发育的影响最大,溶蚀作用对储层孔隙起到改善作用。
In order to fully understand the reservoir characteristics of the Chang 7 reservoir group in the Huaishuzhuang area,and put forward reasonable classification evaluation methods,the petrological characteristics,reservoir space characteristics and physical properties of the reservoir were studied by using sandstone common slices,cast slices,scanning electron microscope and mercury intrusion data,and the affecting of diagenesis to the physical properties was analyzed,too.The results show that the reservoir of Chang 7 oil layer in the study area is mainly feldspar sandstone,and the type of cementing is mainly thin film-pore type and pore type;The average porosity of the reservoir is 8.29%and the average permeability is 0.23×10^-3μm^2,and the reservoir belongs to low porosity-ultra and low permeability reservoir;Based on the displacement pressure and maximum mercury saturation,the physical properties of Chang 7 oil reservoir in the study area are simply divided into three categories.Compaction and cementation have the greatest impact on reservoir pore development,and dissolution has an effect on improving reservoir pores.
作者
白光辉
师学耀
陈立军
闻星宇
刘伟
庄岩
安鑫胜
BAI Guang-hui;SHI Xue-yao;Chen Li-jun;WEN Xing-yu;LIU WEI;ZHUANG YAN;AN Xin-sheng(Exploration and Development Technology Research Center,Yanchang Oilfield Co.Ltd,Yan′an 716000,China)
出处
《延安大学学报（自然科学版）》
2020年第3期56-60,共5页
Journal of Yan'an University：Natural Science Edition
关键词
槐树庄地区
长7油层组
成岩作用
储层特征
Huaishuzhuang area
Chang 7 oil layer formation
diagenesis
reservoir characteristics
