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本文探讨了应用微磁寻找油气这一领域的研究现状以及发展趋势，总结了微磁异常的形成机制。文章指出：有多种因素可导致微磁异常，如碳氢渗漏环境中产生的磁性矿物，岩石中的碎屑磁铁矿，沉积岩的热变质作用产生的燃烧渣以及其它干扰因素等。由于微磁的形成与分布存在三种不确定性：①在碳氢渗漏环境中微磁的形成与分布的固有的不确定性；②由地下水的“移流效应”导致的不确定性；③化探异常的不确定性。因此，我们在研究中应遵守一定的准则，并将微磁纳入到非地震找油法的系统中，以多方法、多参数的结合为手段来提高信息准确度。
This paper explores the research status and trends of the field of micro-magnetic oil and gas exploration and summarizes the formation mechanism of micro-magnetic anomalies. The article pointed out: There are many factors that can lead to micro-magnetic anomalies, such as magnetic minerals generated in hydrocarbon leakage environments, detrital magnetites in rocks, combustion residues produced by thermal metamorphism of sedimentary rocks, and other disturbances. There are three kinds of uncertainties due to the formation and distribution of micro-magnetism: (1) the inherent uncertainty of the formation and distribution of micro-magnetism in a hydrocarbon leakage environment; (2) the uncertainty caused by the “migration effect” of groundwater; Uncertainty of geochemical anomalies. Therefore, we should follow certain guidelines in our research, and include the micro-magnetism in the system of non-seismic oil-finding method, in order to improve the information accuracy by means of multi-method and multi-parameter combination.