成岩演化作用对油气运移方式的影响--以松辽盆地西部齐家-古龙凹陷扶杨油层为例

Diagenetic evolution and its effects on hydrocarbon migration:a case from the Fuyang reservoir in the Qijia-Gulong Sag,the West Songliao Basin

通过对岩石薄片、X-射线衍射和扫描电镜等测试资料的分析,总结了松辽盆地扶杨油层的岩石矿物学特征、成岩作用及其演化过程,并研究了成岩演化与砂岩输导层物性和含油气性的关系。综合研究认为,扶杨油层埋藏深,成岩作用强,成岩演化控制着砂岩输导层的物性和含油气性,并直接影响了油气运移方式。

Based on the analysis of various data such as casting sandstone thin section, scanning electron microscope （SFM） and X-ray diffraction （XRD） , this paper summarizes the petrological and mineralogical characteristics, diagenesis and its evolution of the Fuyang reservoir in the Songliao Basin, and studies the relationships between the diagenetic evolution and the physical and oil-beating properties of sandstone carrier beds. Comprehensive study shows that the Fuyang reservoir is characterized by deep burial depth and strong diagenesis, and the diagenetic evolution controlled the physical and oil-beating properties of the sandstone carrier beds and directly influenced the patterns of hydrocarbon migration.