Research On Tectonic Features And Favorable Area Forecast Of Permian-Paleogene In Huangqiao Area

Huangqiao area is located in Taizhou City, Jiangsu Province, which is beneficial to the marine oil and gas areas in Lower Yangtze Region. Previous to the region a more adequate basis for geological research and the implementation of the initial seismic drilling exploration, and have made certain progress. Summarizing the results of previous studies absorption and using of existing exploration data, This paper commences structural interpretation of seismic data on the Huangqiao area.Huangqiao area is mainly affected by large north-central faults control the direction of the NE dustpan single fault type fault group, the main fault basically NEE trending, consistent with the regional structural trend.The whole region south than in the north, the south by the uplift-based, such as the southeastern sub-convex, the main north to the ancient depression, such as the North Central sub-sag.Under the conditions of the existing data, this paper research on T2-Tg4 seismic reflection layer of the ancient structural features under the conditions of a detailed study as much as possible and commence production of seismic records, the purpose of calibration of the regional seismic geological layer reflective layer and explain them, then we interpret the faults, summarize characteristics of each layer bit seismic reflection, and prepare a series of T2-Tg4 reflector relevant maps of ancient structures, and then place the structural characteristics of the layers made a careful study, Analyze the layers bit fault type, level and period of time, that The late Indo-China region-Early Mesozoic thrust faults formed mainly to A Fracture;Late Yanshan-Early Himalayan inverted normal faults inherited, mainly primary and secondary fracture;Late Himalayan developed domino-style normal faults, which were mainly secondary and tertiary fracture. Where A Fracture controlled the area structure, sedimentary characteristics and trap formation, migration and accumulation of oil and gas play a crucial role.According to restore eroded by the original thickness of the sediment thickness map compiled, we analyze and study Permian to Early Tertiary tectonic evolution of ancient history on Huangqiao area, which experienced three stages of the late Triassic-early Yanshan acrogenic thrust,the late Yanshan-Early Himalayan extensional rift and the late Himalayan uplift.Huangqiao area by hydrocarbon source rocks, seals and hydrocarbon migration and accumulation characteristics of the system, deepen the oil and gas accumulation in the area understanding of the law, oil and gas division of the favorable zone for exploration after the theoretical work guidance.