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本文通过对东海陆架盆地平湖地区表层沉积物的系统应性测量和化探指标分析，揭示烃类微渗漏对沉积物磁性特征的影响，探讨磁性测量方法在表层油气勘探中的应用前景。研究表明，平湖地区表层沉积物中主要的磁性矿物为磁铁矿，一般磁性较弱沉积物中磁铁矿晶粒以单畴（SD）为主，而磁性较强的沉积物中以较粗的假单畴／多畴（PSD／MD）为主，磁性参数与化探数据酸解烃、蚀变碳酸盐存在明显的相关性，表明磁性测量可作为油气勘探的间接手段。在平湖地区，指示磁铁矿晶粒大小的磁性参数与化探数据具有最好的相关性。因此，运用磁性测量进行油气勘探，不应仅局限于检测磁性强弱形成的异常，而应通过系统的磁性参数测量，根据磁性矿物在类型、含量、晶粒等方面的变化特征，充分揭示烃类渗漏信息。
In this paper, the systematic measurement of the surface sediments in the Pinghu area of the East China Sea shelf basin and the analysis of geochemical indicators are carried out to reveal the influence of hydrocarbon microleakage on the magnetic characteristics of the sediments and to explore the application prospect of magnetic measurement methods in the surface oil and gas exploration. The results show that the main magnetic minerals in the surface sediments of Pinghu area are magnetite. Generally, the single-domain (SD) magnetite grains are dominant in the relatively weakly-magnetite sediments and the thicker ones (PSD / MD). The magnetic parameters are significantly correlated with the acid-solution hydrocarbon and altered carbonate of geochemical data, indicating that magnetic measurements can be used as an indirect means of oil and gas exploration. In Pinghu, the magnetic parameters that indicate the magnetite grain size have the best correlation with the geochemical data. Therefore, the use of magnetic measurements for oil and gas exploration, should not be limited to the detection of magnetic anomalies, but should be measured by the magnetic parameters of the system, according to the magnetic minerals in the type, content, grain and other aspects of the changes in the full disclosure of hydrocarbons Leakage information.