洛带气田遂宁组储层孔隙特征及影响因素分析

Characteristics of Porosity Texture and Influence of the Suining Formation Reservoir in Luodai Gas Field

根据砂岩铸体薄片观察资料及扫描电镜资料对洛带地区上侏罗统遂宁组砂岩储层的孔隙特征进行了较为详细的研究,分析了影响孔隙发育的各种因素.洛带地区遂宁组储集砂岩的孔隙类型以粒间孔为主,其次为粒内孔和微溶缝;影响现今遂宁组砂岩储层孔隙结构特征的因素主要是中等强度的压实作用、胶结物的充填作用以及破裂和溶蚀作用.

This research covers mainly the casting thin sections observation material and the scanning electricity mirror material to the characteristics of porosity texture of the Suining Formation Reservoir in Luodai Gas Field, and the analysis of the influence factors of the growth of the porosity. The result indicates that the first type of porosity of Suining Formation reservoir in Luodai Gas Field is the intergranular porosity, the second type is intragranular porosity and slightly soluble seam. The main influences on the characteristics of the porosity texture of the Suining Formation Reservoir are： one is the medium intensity compaction and agglutinates fills actions, the other is abruption and corrosion.