Carbonate reservoir characteristics of Upper Sinian Dengying Formation in western middle Yangtze
The Dengying Formation of Upper Sinian in western middle Yangtze is characterized by preferable exploration prospect and low degree of prospecting．Based on the SUl~aae outcrop，the reservoir characteristics are studied．The result shows that dolomite is the main reservoir rock in the study area．The pore types of dolomite reservoir are mainly intercrystal pore，dissolved pore and intra-gravel pore．The pore structure can be divided into three categories：large pore and medium throat，large pore and small throat，microcrack and microthroat，an d among them the large pore and small throat is the main type．The reservoir zoning evaluation result indicates that the reservoir condition in Zhangjiajie— Sancha area are the best，followed by Liantuo inYichang-Pengshui in Chongqing areas，and it is the worst in Wangcun of Yongshun—Yangjiaping in Shimen areas．
Key words： boundary fault; sand body prediction; seismic inversion; Nanyang Sag
LI Guoliang , CAI Jia , GAN Huajun , LIAO Jihua . Carbonate reservoir characteristics of Upper Sinian Dengying Formation in western middle Yangtze[J]. Lithologic Reservoirs, 2010 , 22(2) : 37 -42 . DOI: 10.3969/j.issn.1673-8926.2010.02.007
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