论文部分内容阅读
西朝鲜湾盆地属于朝中地台,与中国东部海域盆地的发展历史相连,油气勘探程度及研究程度极低。西朝鲜湾盆地构造上具有明显的特征,表现为:①在地质剖面上显示非对称箕状断陷构造;②存在3个不整合面,并根据这3个不整合面可划分为4个构造层;③盆地内断裂构造发育且以正断层为主;④根据构造特征,可将研究区划分为中央断块、大同江下流断块、北西断块与北东断块4个区块。分析了盆地的构造和沉积演化并对盆地演化进行了模拟。认为西朝鲜湾盆地具有较好的油气前景;研究区内断层是油气垂向运移的主要通道,断层的活动特征、构造演化历史以及与油气运移历史之间的匹配关系是油气成藏的主要控制因素之一。
The North-Western Gulf Basin belongs to the DPRK-Taiwan Platform, which is linked to the history of the basin in the eastern seas of China. The degree of hydrocarbon exploration and the degree of research are extremely low. The structural features of the West Korean Bay Basin have obvious features as follows: (1) Asymmetric half-graben fault structures are displayed on geological sections; (3) There are three unconformities; and the three unconformities can be divided into four structures Layer; ③ The fault structure is developed in the basin and is mainly normal faulting; ④ According to the tectonic characteristics, the study area can be divided into four blocks: central fault block, Datong River downstream fault block, North West fault block and North East fault block. The tectonic and sedimentary evolution of the basin was analyzed and the basin evolution was simulated. It is believed that the western North Bay basin has a good prospect of oil and gas. Faults in the study area are the main channels for the vertical migration of oil and gas. The matching of the fault’s activity characteristics, tectonic evolution history and hydrocarbon migration history is the result of hydrocarbon accumulation One of the main control factors.