南黄海南部坳陷下第三系烃源岩的有机地球化学特征

Organic Geochemical Characteristics of Lower Tertiary Hydrocarbon Sourse Rocks from the Sourthern Sag in the South Yellow Sea

本文通过对南黄海南部坳陷三口钻井所揭示的下第三系烃源岩进行了多项有机地化分析,研究表明:该地区阜宁组地层具有良好的生油物质和成熟、演化过程,在深凹地区有着良好的生烃潜力。

This paper studies various geochemical characteristics of the lower Tertiary source rocks of Funing and Dainan Formations in wells CH-6-1-1,CH24-1-1 and W20 from the sourthern sag, South Yellow Sea. The various organic geochemical data show that the source rocks of Funing Formation have abundant organic matter and have undergone mature evolution. Although the oil generating threshold occurs relatively much deeper in depth because of the lower paleothermal gradient, there is no doubt that good potential hydrocarbons exist in the deeper sag within the studied area.