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提高上桥油区长4+5、长6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。认为长4+5、长6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≥16Ωm;声波时差≥228μs/m;含油饱和度≥40%。
Improve the interpretation accuracy of logging data of 4 + 5 and 6 wells in Shangqiao oil zone, and carry out reservoir “quasi- ” research by collecting, sorting, correcting and analyzing all kinds of data. The Chang 4 + 5 and Chang 6 reservoir lithologies are mainly feldspar and lithic feldspathic sandstones, followed by feldspar lithic sandstones. 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 ≥ 16Ωm; acoustic time difference ≥ 228μs / m; oil saturation ≥ 40%.