东濮凹陷马厂地区油气成藏特征及主控因素分析

A Brush Mechanism of Hydrocarbon Accumulation in Machang Area of Dongpu Depression

东濮凹陷黄河南马厂地区油藏均具有"一把刷子"油气成藏特征,在剖面上油层常呈"羽状"分布,单个油藏具有含油高度低,含油面积小,平面上叠加连片的特征。通过对马厂地区不同断块的构造,烃源岩、沉积、成藏要素及成藏过程的研究,认为马厂地区"一把刷子"油气成藏主要受控以下几个方面:优质源岩控层,优质储层富油,反向断裂控圈,自生自储成藏。

Reservoirs had brush characteristics in Machang area of Dongpu Depression.they usually had feather characteristics on profile,for the mentioned faults,there were low oil-bearing height and low oil column on profiles and small oil-bearing area.By studying the structures,hydrocarbon and sediments,reservoir forming factors and its process in different blocks of Machang Oilfield,it was considered that a brush mechanism of reservoir formation is mainly controlled by the factors,such as good quality source rocks;abundant oil in good quality reservoirs,the entrapment controlled by reverse fault,self-generating and self-preserving reservoirs in reversal anticline structure.