为了更加准确地预测和评价珠江口盆地惠州凹陷古近系油气资源潜力，精细划分了该凹陷油气汇聚单元和成藏体系，并利用层序地层学和地球化学相结合的方法，分析了该凹陷古近系始新统-下渐新统恩平组和始新统文昌组6个三级层序烃源岩有机质丰度、有机质类型、生烃潜力大小和生物标志物组合特征，指出文昌组SQ2层序地层中—深湖相泥岩是主力烃源岩，恩平组SQ5和SQ6层序地层沼泽相、河流三角洲相和浅湖相煤系烃源岩是重要烃源岩。

For exactly doping out and evaluating petroleum and natural gas resource potentials in Paleogene in Huizhou Depression in Pearl River Mouth Basin, and  classifying petroleum systems, organic matter abundances, organic matter types, hydrocarbon generating potentials and biomarkers of six three-class sequence so urce rocks in Palegene in Huizhou depression have been studied by methods of sequence strata and geochemistry. Middle-deep lacustrine mud rock in SQ2 in Wen chang formation in Eocene is absolutely main source rock. Swamp and fluvio-deltaic  and coal-measure source rocks in SQ5 and SQ6 in Enping formation in Oligocene are important source rocks.