塔里木盆地轮南油田油源分析及勘探前景

综合研究了轮南地区原油的地球化学特征,结合构造发育史、烃源岩演化史和油气分布特征,认为轮南地区原油主要来源于寒武系-下奥陶统烃源岩,并指出塔里木盆地的油气勘探应该主要集中到以寒武系-下奥陶统为主要烃源岩的战略目标上来,在轮南地区寄希望于中-上奥陶统为烃源岩来寻找大油田是不可思议的,必将引起对勘探的误导.

Oil Source Analysis and Exploration Prospect of Lunnan Field in Tarim Basin

The geochemistry of Lunnan crude is comprehensively studied. This paper presents that Lunnan crude primarily originates from the Cambrian-Lower Ordovician source rocks, combined with the structural development history, the source rock evolution history and oil-gas distribution characteristics. So the Cambrian-Lower Ordovician strata should be taken as major source rocks for petroleum exploration in Tarim basin instead of pinning our hope on search for giant oilfield in Middle-Upper Ordovician strata as major source rocks in order to avoid the existed misdirection.