摘要
徐家围子断陷为陆相火山 -沉积岩盆地。断裂运动是控制火山活动及火山岩分布的主要因素 ,本文采用多种地震属性对目标区火山岩进行了预测 ,得知火山岩体的平面展布特征 ,即沿基底断裂呈串珠状条带形分布。断裂运动同时也是控制生油层发育的重要因素 ;火山岩储集层物性的好坏除受原生孔隙控制外 ,次生裂缝及溶洞也是决定性因素。由于断裂的强烈活动 ,翘倾断块自成一个相对独立的成烃单元 ,可形成多种类型的圈闭 ,是聚集深层天然气和无机气的有利场所。本次研究在目标区共识别出 9个火山岩体 ,其中 6个火山岩体为一类有利勘探靶区。
Xujiaweizi fault depression is a continental volcanite rock basin. Fractured activity is a primary factor controlling volcanic activity and volcanite distribution. The paper studied and predicted volcanite in a studied area by using multiple seismic attribution and determined distribution feature of volcanite in a plane: volcanite appears as strip distribution like a string of beads along basement fracture. What's good or bad for physical characteristics of volcanite reservoir, besides controlled by primary pore, the secondary pore system and limestone cave are also key factors. The dipping upwards fault-block is that oneself formed relatively independent hydrocarbon-formed unit caused by violent fractured activity and a different kind of traps can be formed. It's favorable site for storing deep gas and inorganic gas. The study has identified totally 9 volcanite body in the area, among which 6 belong to first class of prospective exploration area.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2001年第3期345-351,共7页
Oil Geophysical Prospecting
