川西坳陷中段须家河组成藏条件及勘探有利区分析

通过对已发现油气与有利沉积相带、局部构造、断裂及裂缝分布等关系的分析,结合试油资料与储层厚度、储层物性与录井显示关系的统计分析以及成藏要素匹配关系,开展川西坳陷中段须家河组成藏条件及其与油气富集主控因素研究,提出本区下古生界油气富集三元主控的地质新认识：有利相带、局部构造背景、断裂及裂缝共同控制油气富集,指出须家河组下步勘探的方向.

Main Factors Controlling Hydrocarbon Accumulation Conditions of the Xujiahe Formation in Middle Segment of Western Sichuan Basin

Through analyzing the relations between petroleum discoveries and distributions of the favorable sedimen- tary facies zones, local structures, faults and fractures, this paper studies the main factors controlling hydrocarbon accumulation in combination with statistical analysis of the relationship between formation test data and reservoir thickness, reservoir property and logging data. The results show that favorable sedimentary facies zones, local structural setting, and faults ＆ fractures are the three major factors controlling hydrocarbon accumulation in western Sichuan basin. Based on the relationship of the source, reservoir and cap rock space distribution basic petroleum geological conditions, point out the favorable direction of the next step of the exploration, local structural nose struc- ture and fracture development belt and platform margin energetic favorable phase the band are the most favorable targets for further exploration.