德惠断陷断裂演化及其与油气的关系研究

The Fault Evolution and Its Relationship with Oil and Gas in Dehui Fault Depression

断裂演化在德惠断陷发育过程中起着十分重要的作用,基底断裂和盖层断裂分别发挥着不同的作用。基底断裂分段演化和交错联接的特点控制着断陷的边界、构造单元的划分、物源输入通道和充填样式;同时,基底断裂的演化和多期活动也直接影响了盖层断裂发育、沉积建造和局部构造形成。盖层断裂主要控制着局部构造发育、油气运移、聚集成藏;同时,对储层的发育、砂体的展布,也起着一定的控制作用。

Fault evolution played a vital role in the development of Dehui Fault Depression,basement fault and superficial fault had different effects.Basement fault had the characteristics of segmentation evolution and crisscross patterns controlled fault boundary,division of tectonic unit and input channel and filling patterns of materials.And the development of superficial fault,sedimentary formation and formation of local structures were directly influenced by evolution and multistage activities.As for the superficial fault,it mainly controls the development of local structures,hydrocarbon migration and accumulation.In addition,this kind of fault exerts some influence on development of reservoir and distribution of sand bodies.