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油气区地表黄土具有磁化率异常,早已是一 个不争的事实,而为什么会产生这种异常,以及这 种异常对探测油气藏是否具有某种指导性意义,一 直是国内外油气地球物理工作者关注和研究的课题 之一。本文作者对油气区地表黄土磁化率异常成因 进行了分析,并采用适当的数学手段,对中国西部 某油气区黄土样品磁化率观测值进行了处理;合理 地划分出黄土磁化率背景值,根据磁化率异常确定 油气远景区和量化评价因子。经过实际油井验证, 证明了应用磁化率指示油气藏信息的有效性。
It is an indisputable fact that surface loess has abnormal magnetic susceptibility. It is an indisputable fact that why this kind of anomaly occurs and whether this anomaly has some guiding significance to the exploration of oil and gas reservoirs has been the concern of oil and gas geophysical workers at home and abroad And one of the topics studied. In this paper, the author analyzes the causes of anomaly of surface loess magnetic susceptibility in oil and gas regions and applies appropriate mathematical methods to treat the magnetic susceptibility of loess samples in a certain oil and gas region in west China. The background value of loess susceptibility is reasonably divided, Abnormal rate of determination of oil and gas prospects and quantitative evaluation factor. After the actual oil well verification, proved the application of magnetic susceptibility to indicate the validity of reservoir information.