Abstract: This paper studied the well developed fractured structural belt and its developing history, based on the formation of fractured-mudstone oil and gas traps in Qingshankou group in the northern part of Gulong sag. The digenesis history of the mudstone is studied firstly to determine broken condition of mudstone. Laser holographical and speckle interferential tracing technology are used to determine the criticalbroken value of mudstone. Then, Paleo-structure at different geologic ages are used to evaluate the curvature of different structural belt to determine the favorable belt fordeveloping tectonic cracks. Eventually, information on the formation, migration, and accumulation of oil and gas and those on development of structural fissure are integrated to forecast the location of the favourable belt of fractured-shale oil and gas pools.

摘要： 本文以古龙凹陷北部青山口组泥岩裂缝油藏的形成条件为实例,进行了构造裂缝发育带及其发育史的研究。首先从成岩史分析入手确定岩石的破裂条件,并利用激光散斑干涉照相放大技术实测了岩层破裂临介曲率值,然后利用各时期古构造图,计算其各地带的曲率值,确定出构造裂缝发育的有利地带;最后综合分析各地带构造裂缝发育条件与油气生成、运移、聚集条件的匹配关系,从而指明泥岩裂缝油藏分布的有利地带。