枯竭油气藏型地下储气库库址优选研究

天然气地下储气库能够解决天然气供应与消费之间的矛盾。由于天然气地下储气库库址的确定具有多目标性,因此在选择和建设天然气地下储气库前期必须对储气库库址进行充分的技术和工程论证。文章针对枯竭油气藏型天然气地下储气库的特点,在研究确定枯竭油气藏型天然气地下储气库库址优选原则的基础上,采用模糊数学中的综合评判方法,对天然气地下储气库库址进行综合评判,得到了最优库址。确定了油气藏剩余价值、储层发育情况、储层埋深、储层厚度、盖层性质及厚度、储层孔隙度、储层渗透率和储气库容量8项评价因素,通过计算实例,验证了采用综合评判法优选枯竭油气藏型天然气储气库库址的可行性。

Research on Optimum Site of Underground Gas Storage of Depleted Oil-gas Reservoir

The paper adopts the synthetic evaluation method of fuzzy mathematics to evaluate the site of underground natural gas storage on the basis of optimum principles and ascertains eight factors of evaluation. They are salvage value o f oil and gas reservoir, developmental condition of reservoir, depth of reserv oir, thickness of reservoir, property and thickness of cap rock, porosity of reservoir, permeability of reservoir and capacity of gas storage. Through an ex ample, the feasibility of using synthetic evaluation method to select the site of depleted oil-gas reservoir of underground gas storage is demonstrated.