Origin and distribution of higher permeable reservoir of the Upper Paleozoic in Ordos Basin
Xiao Hongping1, Liu Ruie1, Li Wenhou2, Zhang Fudong1, Zhang Chunlin1, Hao Aisheng1, Miao Weidong1
1 Research Institute of Petroleum Exploration & Development-Langfang， PetroChina，Langfang 065007，Hebei 2 Department of Geology，Northwest University，Xi′an 710069，Shaanxi
Abstract：Three kinds of higher permeable reservoirs including intergrain pore quartz sandstone，dissollution pore quartz sandstone，intergrain and dissolution complex pore feldspathic arenite were developed in the Upper Paleozoic of Ordos Basin.Based on analysis of rock texture，component and physical properties of the three types of sandstones，the control mechanism of high quality reservoir，such as sedimentary environment，diagenesis and tectonism，were discussed in detail.According to the transport distance of sediments，sedimentary facies，distribution of sandstone，pore types，composition of grain，burial depth and tectonic movements in later periods， the reservoir of the main exploration measures were appraised and classified，and the higher permeable reservoirs distribution pattern is summarized.It is known that the sedimentary system of high quartz content，high-energy sedimentary facies of braided fluvial facies，strong corrossion and weak compaction diagenetic facies are considered to be the dominating distribution areas of higher permeable clastic reservior in the Upper Paleozoic of the Ordos Basin.
Xiao Hongping,Liu Ruie,Li Wenhou et al. Origin and distribution of higher permeable reservoir of the Upper Paleozoic in Ordos Basin[J]. JOPC, 2012, 14(4): 543-552.
