摘要
东营凹陷北部陡坡带深层砂砾岩体岩性识别难度大,钻井取心、岩屑录井和井壁取心资料不能满足储层评价的需求。基于测井资料具有信息丰富、全井段采集的优点,探讨了利用岩心和岩心扫描图像刻度地层微电阻率扫描成像(FMI)测井,建立了利用FMI精细划分岩性和岩性组合的方法和模型;利用FMI划分岩性的成果刻度常规测井资料,提取不同岩性的常规测井曲线特征值,探讨了利用中子—密度孔隙度、声波—密度孔隙度交会和M—N值识别岩性的方法。结果表明,M和N值识别岩性效果较好,利用该方法识别的岩性与FMI识别的岩性具有较好的一致性,准确率达到79.99%,可满足测井评价的需要。
It is difficult to recognize the conglomerate of Shahejie formation in the deep northern steep slope of Dongying depression.Drilled core, logging and sidewall coring debris can not meet the requirement of reservoir evaluation.Well logging data has the advantage of full-hole and continuity of information in the whole strata.Based on logging data advantages,using core and core scanned image to calibrate FMI imaging logging,we recognized lithology and lithological association and showed their character of FMI.The results are used to calibrate conventional well logging data,and extract the different lithologic logging curves of conventional logging data,and then the neutron-density and M-N cross plots are well mapped.The cross plots showed that M-N was reliable to identify the lithology.The result of identification is well correlated with the identification of FMI with an accuracy up to 79.99%that may meet the requirement of log evaluation.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2010年第3期57-59,共3页
Petroleum Geology and Recovery Efficiency
基金
中国石化重点科技攻关项目"深层砂砾岩体测井评价研究"(GKC0701)
