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应用氦、钋测量方法普查油气田效果探讨 被引量:1

Analysis of the effect of oil-gas field reconnaissance using helium and polonium determinations
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摘要 氦主要是放射性元素衰变释放出的a粒子与两个电子结合而成的,钋是放射性元素氡的衰变子体。氦、氡的地球化学特性表明它们可以在油气藏中富集,也易于从油气藏中逸出并透过盖层到达地表。由于油气田上方的次生变化,使它们在油气田上方形成环状异常。氦、钋测量实例表明,异常的重现性好,油气田上方的环状异常基本上对应油气田的范围。因此,这两种测量方法在油气田普查中应用前景广阔。 Most helium result from the combination of one a particle released by decaying radioactive element with two electrons. polonium is the decay daughter of radioactive element radon. The geochemical properties of helium and radon show that they can accumulate in hydrocarbon reservoir and easy migrate upward from the hydrocarbon reservoir to the surface. They usually form circular distribution zones over oil-gas field because of secondary change over the field.The real determinations of helium and polonium elements show their good surface circular distribution zones, which generally correspond to the extents of oil-gas field. Therefore, the determinations of the two elements will have wide application prospects in oil and gas reconnaissance.
机构地区 中国地质大学
出处 《石油地球物理勘探》 EI CSCD 北大核心 1991年第2期220-226,266,共8页 Oil Geophysical Prospecting
关键词 放射性测量 油气田普查 环状异常 Subject heading: radioactive determination, oil-gas field reconnaissance, circular distribution zone
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