辽东湾地区古近系烃源岩有机地球化学特征

The organic geochemistry character of Eocene source rocks in Liaodong Bay

辽东湾地区古近系主要发育三套烃源岩,烃源岩的非均质性以及热演化生烃的不均衡性制约着大中型油气田的形成与分布。本文从有机质丰度、类型、成熟度等有机地球化学方面研究辽东湾地区主力烃源岩的有机地球化学特征;采用IES盆地模拟技术,模拟平面展布特征,得出烃源岩非均质性较强,古近系烃源岩对该地区油气成藏有着重要的作用。

There are three series Eocene source rocks in Liaodong Bay.The heterogeneity of source rocks and hydrocarbon generation controls formation and distribution of large-scale and medium-scale oilfields.This paper dipicts geochemical characters of source rocks in Liaodong Bay area mainly such as organic matter abundance,type and maturity.IES Basin modeling technique is used to simulate maturity,and to illustrate distribution of the characteristic for source rocks.These source rocks are nonuniform in Liaodong Bay,contribute favorable effort for petroleum accumulation.