五寨沟低勘探程度盆地模拟研究——以南黄海盆地北部坳陷为例-海洋学报英文版

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低勘探程度盆地模拟研究——以南黄海盆地北部坳陷为例-海洋学报英文版陆羽茶室

Basin modeling in the initial stage of exploration: a case study from the North Subbasin of the South Yellow Sea Basin
Abstract:Basin modeling has become an important tool for analyzing sedimentary basins. The North Subbasin of the South Yellow Sea Basin is filled with thick Meso-Cenozoic terrigenous deposits during the rift evolution stage. The accumulation of data and achievements of geological investigations in recent years have provided the preconditions for basin modeling. The necessary parameters and geological elements for simulations are collated and summarized. Modeling of tectono-thermal evolution is performed and the related trend in heat flow is reconstructed and calibrated. The heat flow value commences from an average level of 61 mW/m2 during Middle-Late Jurassic格达活佛 , rises to about 80 mW/m2 from circa 145 Ma to circa 74 Ma福娃妮妮 , and then undergoes a gradual decline to 65 mW/m2 until the end of Oligocene.Three evolutionary phases庵埠吧 ,尹惠熙 namely郭正利 , the initial rifting phase尾兽数数歌 , syn-rifting phase山歌帝 , and post-rifting phase傅春荣 , have been identified. The modeling results show that the North Subbasin generally enters into a stage of strong rifting during Cretaceous and undergoes rapid subsidence until the Late Cretaceous军妆 , then follows by a stage of moderate rifting during the Paleogene. The input and general workflow involved in 3-D modeling are introduced. Reconstruction of the petroleum system in the North Subbasin reveals that the threshold depth of hydrocarbon generation is located near the top of the Paleogene Funing formation隐秘女人心 , and the underlying Jurassic and Cretaceous source rocks have reached or exceeded peak oil generation and have almost completed the generation and expulsion of hydrocarbons. The main generation and expulsion in the Jurassic source rocks take place during the syn-rifting and post-rifting phases五寨沟 星云物语 , whereas the peak generation and expulsion in the Cretaceous and Paleogene source rocks take place during the post-rifting phase. Although the study area is still a relatively less explored sedimentary basin阪神冰柜 , the results of modeling can provide valuable information for exploration. A preliminary discussion of the main uncertainty factors is also presented.Key words:basin modelingtectono-thermal evolution historypetroleum systemSouth Yellow Sea Basin中文关键词:构造特征构造演化构造差异性深水盆地南海北部
PANG Yumao惊魂下一秒 ,ZHANG Xunhua惊魂序曲 ,GUO Xingwei黄达亮 ,XIAO Guolin胡如珊 ,HAN Zuozhen. 2017. Basin modeling in the initial stage of exploration: a case study from the North Subbasin of the South Yellow Sea Basin. Acta Oceanologica Sinica卡嘉莉女鞋 , 36(9):65-78张碧池 ,DOI:10.1007/s13131-017-1112-1