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地表—近地表烃渗漏包括主动和被动或宏观与微观渗漏;烃渗漏至少产生8种以上土壤和沉积物蚀变;在排烃期后运移模式中,烃以分相运移为主从油源穿过多层圈闭到达地表;不同地质背景下烃运移途径与过程不同,从而产生从壮观经大量至弱而高聚集到无渗漏的烃渗漏谱;由烃渗漏解释盆地地质与油气动力学更具勘探意义;建立地表—近地表烃渗漏与地下油藏关系的诊断性标志是实现油气直接勘探的关键,也是技术进步的标志。
Surface-near-surface hydrocarbon leaks include active and passive or macroscopic and microleakage; hydrocarbon leaks produce at least more than eight kinds of soil and sedimentary alterations; in the post-expulsion-hydrocarbon migration mode, hydrocarbons migrate in phases The main oil flow passes through multiple layers of traps and reaches the surface. Different hydrocarbon migration pathways and processes are different under different geological backgrounds, resulting in hydrocarbon leakage spectra from spectacular mass to weak to high concentration to no leakage. Interpretation of the basin geology and hydrocarbon dynamics more exploration significance; the establishment of surface - near-surface hydrocarbon leakage and underground reservoir diagnostic diagnostic signs is to achieve direct exploration of oil and gas is also a sign of technological progress.