摘要
鄂尔多斯盆地新窑子沟区长8储层物性较差,开发难度大,为了能准确识别出长8有效储层段,就需要确定出长8储层有效厚度下限。利用岩心、录井、测井、试油试采、分析化验等资料,在长8储层特征及四性关系研究的基础上,采用经验统计法和图版法确定了长8储层的有效厚度下限。结果表明,岩性下限为细砂岩;含油性下限为油迹;物性下限为孔隙度7.5%,渗透率0.14 mD;电性下限为声波时差230μs/m,电阻率20Ω·m,含油饱和度39%。
The Chang 8 reservoir has poor physical properties and exploits difficultly in Xinyaozigou area of Ordos Basin,in order to identify effective Chang 8 reservoirs accurately,it is necessary to determine lower limits of effective thickness of Chang 8 reservoir.Based on the characteristics and four properties relationship of Chang 8 reservoir by studying dates of core、mud logging、well logging、oil production testing and laboratory testing,lower limits of effective thickness of Chang 8 reservoir is determined by using empirical statistical method and chart method.The results show that:lower limits of effective thickness of Chang 8 reservoir is:the lower limit of lithology is fine sandstone;and the lower limit of oil bearing condition is oil stains;and the lower limit of physical properties are porosity of 7.5% and permeability of 0.14 mD respectively;and the lower limit of electrical properties are acoustic transit time of 230 μs/m,resistivity of 20 Ω·m and oil saturation of 39% respectively.
作者
赵冲
刘佳豪
徐宁
张程哲
Zhao Chong;Liu Jiahao;Xu Ning;Zhang Chengzhe(Fu xian Oil Production Plan of Yanchang oilfield Co.,Ltd.,Yan'an,Shannxi 727500,China)
出处
《云南化工》
CAS
2022年第11期108-111,共4页
Yunnan Chemical Technology
基金
延长油田石油储量计算科研项目(YT19KT-007-11)。
关键词
长8储层
有效厚度下限
四性关系
新窑子沟区
Chang 8 reservoir
lower limits of effective thickness
four properties relationship
Xinyaozigou area
