我国西北含油区断裂与油气聚集

众所周知,油气在盆地内的分布是不均匀的。人们在研究含油气盆地的形成及演化时,认识到断裂对油气聚集分布起着控制作用。我国许多含油气盆地内的油气聚集受断裂控制,如胜利油田、华北油田、四川气田。西北区的油气分布,与断裂关系更为密切。如克拉马依油田、塔里木盆地西南拗陷、柴达木盆地西部朵斯断陷、酒西盆地老君庙背斜带、陕甘宁盆地西缘马家滩断褶带,其油气聚集分布,无不受断裂控制。 

FAULTING AND ITS RELATION TO PETROLEUM ACCUMULATION IN PETROLIFEROUS AREA OF NORTHWEST CHINA

While searching for petroleum in petroliferous basin formed by compressional stress,much attention must be paid to the faults developed on the margin of a basin;and to the drag folds and faulting blocks which were formed due to faulting.In these areas,petroleum is likely to accumulate,and to form a petroleum field.The formation,evolution of a petroliferous basin and petroleum accumulations are closely related to faulting.For example,the petroliferous structural zones of the petroleum distributing area in Northwest China are mostly controlled by faulting.