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中扬子西部上震旦统灯影组具有较好的勘探前景,但勘探程度极低。以地表露头资料为基础,通过储层特征综合研究,认为白云岩为区内的主要储集岩,白云岩储层孔隙类型主要有晶间孔、溶孔、砾间孔洞;孔隙结构分为粗孔中喉型、粗孔小喉型和微隙微喉型3类,其中以粗孔小喉型为主。对储层进行分区评价,结果表明张家界三岔地区储集条件最好,其次为宜昌莲沱—重庆彭水地区,永顺王村—石门杨家坪地区储集条件最差。
The Upper Sinian Dengying Formation in the middle Yangtze Plateau has a good exploration prospect, but the exploration level is extremely low. Based on the data of surface outcrops, dolomite is considered as the main reservoir rock in the study area through comprehensive reservoir characterization. There are mainly intergranular pores, dissolved pores and intergranular pores in the dolomite reservoir. The pore structure is divided into coarse Holes in the hole, small holes throat and micro-gap micro-throat type 3, in which coarse-throat small throat-based. The reservoir area evaluation shows that the reservoir conditions are the best in Sancha area of Zhangjiajie, followed by the reservoirs in Yantan - Tuopu area, Pengshui area in Yichang, Wangcun in Yongshun - Yangjiaping area in Shimen.