江汉油区建设地下储气库库址优选研究

Research on the Optimum Location of Subsurface Gas Storage Banks in Jianghan Oil Area

针对川渝地区天然气东输武汉的建设工程 ,开展对江汉油区现有油气藏进行地下储气库选库研究 ,优选出4个不同类型库址目标进行综合地质评价。从油气藏构造、断层及盖层的封闭性研究 ;储集层及其隔夹层分布特征研究 ;地层及沉积环境分析 ;流体性质、油气层分布规律及储量评价 ,储气库库容估算 ,综合评价了建库地质条件。对优选区块的开发历程、开采特征及现状、目前油层油水分布状况、水体分布及水体体积计算进行了研究。最后对每个区块建库有利条件及不利因素进行了综合评价。

The paper studies the seeking locations of subsurface gas storaga banks of the existing oil-gas reservoirs and optimizes 4 targets of different types of bank locations in Jianghan Oil Area in the light of the Sichuan-Chongqing-Wuhan Gas Transportation Engineering. The geologic conditions of building banks are comprehensively evaluated in the studies of reservoir structures, seal capacity of faults and cap rocks, the distribution characteristics of reservoirs and their barriers and interbeds, the analyses of strata and sediment environments, fluid properties, oil and gas beds distribution, reserves evaluation as well as the volume estimation of storage banks. The paper also studies the production history, recovery characteristics and current situation, present conditions of oil and water distribution in oil beds, water body distribution and calculation of water body volume. Finally, the paper comprehensively evaluates the favorable and unfavorable factors of building banks in each block.