摘要
钻井及地震资料证实珠二坳陷是生烃坳陷，始新统文昌组和渐新统恩平组是坳陷内主要烃源岩。盆地模拟结果表明，这两套烃源岩在白云凹隐现今分别处于生成干气和生油的高峰阶段。珠二坳陷断裂活动的差异性将导致不同凹陷具有不同的油气运聚方式，从而形成不同类型的油气藏。该区圈闭类型较多，除了有大、中型背斜构造外，还有大型的地层圈闭。因此，珠二坳陷具有广阔的油气勘探前景。
ZHU Ⅱ Depression is a proved hydrocarbon generation depression. There are two main source rocks ?Wenchang formation of Eocene and Enping formation of Oligocene, which are generation dry gas and oil in Baiyun and Kaiping sub-basins respectively according to basin modeling. The difference in fault activity strength and time results in different hydrocarbon accumulation model in the depression. Besides conventional structural traps, there are large potential stratigraphic traps. Therefore, ZHU Ⅱ Depression is a prospective area in hydrocarbon potential.
出处
《中国海上油气（地质）》
1999年第3期169-173,共5页
China Offshore Oil and Gas(Geology)
关键词
珠江口盆地
珠二坳陷
石油地质特征
文昌组
恩平组
下生上储
自生自储
Wenchang formation
Enping formation
ZHU Ⅱ depression
self-producing and self-re-serving
underlayer-producing and overlayer-reserving
