东海西湖凹陷保俶斜坡下第三系煤成油的研究

Preliminary Study on Coal-generating Oil of Eogene System in the Baochu Slope of Xihu Sag,East China Sea

孙伯强 陈剑新

Sun Boqiang Chen Jianxin

上海海洋石油局规划设计研究院 上海 200120

Planning & Designing Institute of Shanghai Offshore Petroleum Bureau Shanghai 200120

本文分析了东海西湖凹陷保俶斜坡下第三系始新统平湖组煤层发育状况,研究了平湖组煤的有机质特征、生烃潜量及煤与原油多地球化学组成特征上的相似性,探讨了煤的生、排烃特征。提出始新统平湖组煤是重要的烃源岩,目前斜坡地区始新统平湖组煤正处于油藏形成的最佳期,斜坡所产原油有它的重要贡献。

In this paper, the coal-developed condition, organic matter character and hydrcarbon-generated pontential of coals have been investigated, the similarity of geochemical character between coals and oils have been discussed, hydrocarbon-generated characters and hydrocarbon-expelled efficiency have been studied. By studying, coals of the Eocene Pinghu formation are one of important hydrocarbon source rocks. At present, coals of the Eocene Pinghu formation have entered into the best epoch of pool-formed, it made a greater contribution to oil-formed.