【摘要】 认为中国东部中、新生代海侵是事件性海侵。事件性海侵为中国东部陆相盆地优质烃源岩的形成创造了有利条件，少数几套与事件性海侵有关的优质烃源岩（密集段）是所在盆地的主要油气来源。世界不同盆地中，无论是新地层还是老地层，也无论是陆相地层还是海相地层，优质烃源岩都具有相似的岩石学特征，可以在新区勘探中通过少量地震测线研究地层层序中密集段和可能密集段分布，选择优质烃源层可能发育部位重点综合研究，达到投入少量资金而较准确预测油气前景的目的。参３１（梁大新摘）更多还原

【Abstract】 It is considered that transgressions in Mesozoic and Cenozoic era in eastern China were event type transgressions. Event type transgressions gave favorable conditions for the formation of high grade oil source rocks. Few high grade oil source rocks (condense sections) are the source of oil and gas in the respective basins. In different basins in the world, whether in new strata or old strata, in marine strata or in continental strata, high grade source rocks have similar petrological characteristics, distribution of source rocks can be studied through few seismic lines, especially in the new explored regions; and the possible development section of high grade source rocks are studied with priority. Thus the aim of oil and gas forecast can be achieved by less capital investment.更多还原