提高直罗油区长8储层测井解释精度,通过对各类资料的收集、整理、校正、分析,进行储层“四性”关系研究。研究认为长8储层岩性以长石砂岩、岩屑长石砂岩为主,其次为长石岩屑砂岩。岩性越好,对应的物性好,录井显示级别高,对应的深感应电阻率值也高,含油性也好。确定有效储层下限标准:孔隙度≥8.0%;含水饱和度≤60%;电阻率≥18Ωm;声波时差≥220μs/m;含油饱和度≥40%。 Improve the precision of logging interpretation of Chang 8 reservoir in Zhiluo oil zone, and conduct the research on reservoir “quatity ” relationship by collecting, sorting, correcting and analyzing all kinds of data. The study shows that the lithology of Chang 8 reservoir mainly consists of feldspar sandstone and lithic feldspathic sandstone, followed by feldspar lithic sandstone. The lithology is better, the corresponding physical properties are good, logging shows high level, the corresponding deep induction resistivity value is also high, and the oiliness is also good. Determine the lower limit of effective reservoir standards: porosity ≥ 8.0%; water saturation ≤ 60%; resistivity ≥ 18Ωm; sonic time difference ≥ 220μs / m; oil saturation ≥ 40%.