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根据鄂尔多斯盆地靖边气田上方的ＭＩ０２线、江苏储家楼油田与江汉盆地花园油田地表十字剖面土壤磁性的测量结果，研究地表是否存在与深部油气藏中烃类垂向运移相关磁性蚀变带的可能性及其分布形式．结果表明，ＭＩ０２线样品显示了明显的高磁性异常特征，并与酸解烃之间呈很强的正相关．磁滞回线形态与参量显示出明显的亚铁磁性特征．电子探针分析结果表明，样品中主要磁性矿物（磁铁矿）中高温杂质元素含量很低．江汉盆地花园油田十字剖面磁滞回线参量（饱和磁化强度Ｊｓ与饱和等温剩磁Ｊｒ）的高异常位于油田周边，油田顶部土壤呈典型顺磁性特征．储家楼油田地表土壤的高磁性异常主要位于油田上方，它们均与盖层中的断裂构造对应，储家楼油田的高磁性样品中发现的典型球粒状磁铁矿为次生低温磁铁矿，它与烃运移之间存在成因关系．
Based on the measurements of soil magnetism at surface cross-section of MI02 line above Jingbian gas field in Ordos Basin, Chuji Oilfield in Jiangsu Province and Huayuan Oilfield in Jianghan Basin, we investigated whether there is a magnetic alteration zone associated with hydrocarbon vertical migration in deep reservoirs The possibilities and their forms of distribution. The results show that the MI02 line shows obvious high magnetic anomalies and shows a strong positive correlation with acid-hydrolyzed hydrocarbons. Hysteresis loop morphology and parameters show obvious ferrimagnetism. The result of electron probe analysis shows that the content of high temperature impurity elements in the main magnetic minerals (magnetite) in the sample is very low. The high anomalies of the hysteresis loop parameters (saturation magnetization Js and saturated isothermal remanence Jr) of the cross section of the Garden Oilfield in Jianghan Basin are located in the periphery of the oilfield, and the top soil of the oilfield shows typical paramagnetic characteristics. The high magnetic anomalies in the surface soil of Chujialou oil field are mainly located above the oil fields, which correspond to the fault structures in the caprock. The typical spheroidal magnetite found in the high magnetic samples of the Chujialou Oilfield is a secondary cryogenic magnetite , It has a genetic relationship with hydrocarbon migration.