摘要
二连盆地阿尔凹陷是一个经多期构造活动形成的,具备反转背斜构造带的凹陷。通过对该凹陷油气成藏条件研究认为,主要烃源岩分布于阿尔善组、腾一上亚段,主要油层为腾一上亚段、腾一下亚段、阿尔善组和古生界;扇三角洲为主要沉积相类型;储层普遍较差,但差中有好,其中腾一下亚段储层最好;共发育腾二段、腾一上亚段—腾一下亚段上部、腾一下亚段—阿四段和阿四段底—阿三段4套储盖组合;油藏的主要类型以后期反转形成的背斜、断鼻和围翼的构造—岩性油藏为主,同时在斜坡带发育凝灰岩潜山油藏。整个凹陷具备满洼含油的趋势,是二连盆地又一个富油凹陷。
Aer sag in Erlian Basin is one with reversal anticline structures, which is formed through multi-stage activities. Study of the hydrocarbon accumulation conditions of the sag shows that the main hydrocarbon source rocks are distributed in the K1ba and the upper section of K1bt1. Main oil layers include the upper section of K1bt1, the lower section of K1bt1, K1ba and Pz. Fan-delta is the main sedimentary type. Reservoir properties are generally poor, but high-quality reservoir develop in the poor reservoir, the best one is in the lower section of K1bt1. Four sets of reservoir developed in Aer sag. The main reservoir types include inverted anticline, broken nose, structural-lithologic reservoir, and tuff buried-hill reservoir in west-slope. Aer sag is another oil-rich sag in Erlian Basin.
出处
《中国石油勘探》
CAS
2010年第2期41-44,共4页
China Petroleum Exploration
关键词
油气成藏条件
油藏类型
构造反转
阿尔凹陷
hydrocarbon accumulation condition
reservoir type
structural inversion
Aer sag
