Characteristics of Sedimentary Evolution in the Upper Paleozoic,Daniudi Gasfield,Ordos Basin

作者：Zheng Wen · 发表于：Chenji xuebao · 年份：2015 · 被引用次数：4 · 研究领域：Hydrocarbon exploration and reservoir analysis、Geological and Geophysical Studies、Geological Studies and Exploration

Characteristics of the sedimentary evolution in the progress of transformation from ocean to continent determines the genetic type,distribution,and classified evaluation of gas reservoir in Upper Paleozoic of Daniudi Gasfield,Ordos Basin.Analysis of core observation,in combination with logging,seismic data of Taiyuan-Shanxi-Xiashihezi Formations,resulted that carbonate ramp in lower part and barrier-lagoon-tidal flat system in the upper part of the Taiyuan Formation in a shore environment;the Shanxi Formation is a tidal dominated braided delta system in the background of transition environment;and the Xiashihezi Formation is a fluvial system as the continually north uplift and continental clastic significantly advance to the study area;the whole Upper Paleozoic shows a continued progress of progradation.In the change from sea to land environment,coals of the Taiyuan and Shanxi Formations are main hydrocarbon resources in the study area;sand bodies of the barrier bar,tidal channel of Taiyuan Formation,the braided and tidal channel and tidal sand flat of Shanxi Formation,and the stacking braided-meandering channel of Xiashihezi Formation are favorable reservoir in Upper Paleozoic.