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达坂城次四是准噶尔盆地柴窝堡凹陷的次级构造单元。由于受燕山运动的影响,断裂活动剧烈,形成了6个构造带、在逆断层控制下,形成的断块背斜型局部构造.经喜马拉雅运动改造而定型。根据次回生油岩成油演化及其与局部构造、断裂形成期的配套关系,可认为达坂城次四具有形成中小型油气田的石油地质条件。其中柴窝堡背科带为最有利的含油气构造带;西疙瘩-山水地背斜带、土墩子-西沟下寺背斜带是有利的含油气构造带。它们均处于生油凹陷的边缘,有可靠的构造圈间,是次凹内主要的油气聚集带。同时,这些构造带发育了上三叠统及下、中侏罗统区域盖层,有良好的保存条件,可形成围绕次凹中心的环形油气富集带.
Dabancheng second member is the secondary structural unit of Chaiwopu sag in Junggar Basin. Due to the influence of the Yanshan movement, the fault activity was intense and six structural belts were formed. Under the control of reverse faults, the fault block anticline local structure was formed. The Himalayan transformation and stereotypes. According to the evolution of oil-forming secondary rocks and its relationship with local structure and fault formation period, it can be considered that Dabancheng-Si 4 has the petroleum geologic conditions for forming small and medium-sized oil and gas fields. Among them, the Chaiwopu dorsal zone is the most favorable oil-bearing structural zone; West pimple-Shan Shui anticline, earth-mound-Xigou lower temple anticline belt are favorable oil-bearing structural belt. All of them are at the edge of the depression of oil generation, and have reliable structures and are the main hydrocarbon accumulation zones in the depression. At the same time, these tectonic belts developed the Upper Triassic and lower and middle Jurassic caprocks with good preservation conditions and formed a ring-shaped hydrocarbon-rich zone around the sub-diocentric center.