标题：Seismic sedimentology of conglomeratic sandbodies in lower third member of Shahejie Formation (Palaeogene) in Shengtuo area, East China
作者：Yuan Yong; Zhang Jin-liang; Li Cun-lei; Meng Ning-ning; Li Yan
作者机构：[Yuan Yong; Meng Ning-ning; Li Yan] Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China.; [Zhang Jin-liang] Beijing Normal Univ, C 更多
通讯作者地址：[Zhang, JL]Beijing Normal Univ, Coll Resources Sci & Technol, Beijing 100875, Peoples R China.
来源：JOURNAL OF CENTRAL SOUTH UNIVERSITY
关键词：Shengtuo area; near-shore subaqueous fan; gravity flow channel; slump; turbidite fan; sedimentary mode; acoustic impedance inversion
摘要：The sand-conglomerate fans are the major depositional systems in the lower third member of Shahejie Formation in Shengtuo area, which formed in the deep lacustrine environment characterized by steep slope gradient, near sources and intensive tectonic activity. This work was focused on the sedimentary feature of the glutenite segment to conduct the seismic sedimentology research. The near-shore subaqueous fans and its relative gravity channel and slump turbidite fan depositions were identified according to observation and description of cores combining with the numerous data of seismic and logging. Then, the depositional model was built depending on the analysis of palaeogeomorphology. The seismic attributes which are related to the hydrocarbon but relative independent were chosen to conduct the analysis, the reservoir area of the glutenite segment was found performing a distribution where the amplitude value is relatively higher, and finally the RMS amplitude attribute was chosen to conduct the attribute predicting. At the same time, the horizontal distribution of the sedimentary facies was analyzed qualitatively. At last, the sparse spike inversion method was used to conduct the acoustic impedance inversion, and the inversion result can distinguish glutenite reservoir which is greater than 5 m. This method quantitatively characterizes the distribution area of the favorable reservoir sand.