南泥湾油田金庄区长3储层特征及其主控因素分析

Reservoir characteristics and main controlling factors of Chang 3 membersin Jinzhuang area of Nanniwan oilfield

结合铸体薄片、扫描电镜、物性分析、压汞分析等结果,对南泥湾油田金庄区长3储层的岩石学特征、孔隙喉道类型及其特征、物性特征等进行了研究,最后分析了沉积相带及成岩作用对储层的控制作用。结果说明,三角洲平原亚相沉积的南泥湾金庄区长3储层具有成分成熟度低,结构成熟高的矿物学特征,孔隙类型以次生溶蚀-粒间孔为主,孔隙度与渗透率相关性较差,沉积相带与成岩作用成为控制储层物性的关键因素。

By analyzing the costing thin sections,scanning electron microscope,physical property and mercury penetration,the paper studies the petrology characteristics,The pore- throat types and their characteristics,physical property and so on of the chang3 members as well as its controlling factors.The results show that the petrology characteristics of Chang3 reservoir are low maturity of composition and high maturity of structure.The main types of pore are secondary emposieu,the correlation of the porosity and permeability is bad,the main controlling factors are sedimentary environment and diagenesis.