【摘要】 将地气测量技术应用于油气田勘查及评价工作中。地气测量反映出4000多m的深部构造形成的弱异常，地气异常间接指示了该地区的含气性。地气物质迁移机理研究结果表明，采样器上沉积的物质是以纳米级微粒及其集合体形式存在的。这些纳米级微粒由于具有一系列物理和化学特性，使得它可以与地壳中上升气流的气体相吸咐，随着垂向迁移的气体而上升。不断产生的纳米级微粒被上升气流带到地表，从而在地表形成地气异常。更多还原

【Abstract】 Geogas prospecting was applied to studying oil and gas field in this paper. It can reveal the weak anomaly that is formed by the structure with a depth of 4 000 m. The elements of weak anomaly are K, Na, La, Sm, Fe, Sc, Cr, Au, As, Sb, Zn and Co and they can be indirectly indicated on the area. The shape of geogas anomaly has something to do with the extension of concealed fault. In the lateral section, the anomalies of geogas elements appear above the ring structure. In the plane, the distribution of the anomalies is consistent with that of the ring structure. This shows the characteristics that geogas substance may be transported by ascend gas flow along the concealed fault. With the scanning electron microscopic technique, for instance, atom force microscopy (AFM) and transmission electron microscopy (TEM), the characteristics of particle absorbed in the collector, such as, granule size, feature, planar and dimensional distribution, microscopic composition, are observed. It has been turned out that the geogas substance deposited on the collectors is a type of several dozens of nanometer particles. The particles get to become catenulate, bigger and bigger, even nanometer line. Because the nanometer particle has a series of physical and chemical particular properties, it is absorbed and transported by ascending gas flow in the crust. When a large number of nanometer particles were transported up to the surface by ascending gas flows, the geogas anomaly was formed on the surface directly above the ring structure.更多还原