目前国内对于水驱后期砂岩油藏改建地下储气库的建库筛选以及地质评价研究工作才刚刚起步，需要进一步深化与加强。在借鉴国外含水层建库技术经验基础上，提出了描述水驱后期砂岩油藏恒速宏观注气能力数学表达式，并利用该表达式进一步建立了宏观注气能力与油藏埋深、渗透率、注气增压系数等的关系图版。实例计算表明：在其他地质和工艺参数基本相同的条件下，选择埋藏适中的油藏建库，既可以保证较高的注气能力又可以节省建库投资；同时由于气液流度比的显著差异，利用高渗透且非均质程度小的油藏建库将更为有利。

The research on the selection and geologic evaluation of sandstone reservoirs to rebuild UGS in the late period of waterflooding is just beginning in China, and it needs further and deep research. On the basis of the technology of foreign aquifer UGS, this paper proposes a mathematical expression to describe the constant speed macroscopic gas injection ability of a sandstone reservoir in the late waterflooding period. Through the expression, the paper further establishes a series of relational graphs between macroscopic gas injection ability and buried depth, permeability and injection gas boosted coefficient. The examples calculation indicates that, under the same other geological and technological parameters, it can both guarantee the high gas injection ability and save the investment cost to choose the moderate buried depth reservoir to rebuild UGS; simultaneously, because of the remarkable difference of fluid mobility radios, it will be more advantageous to make use of the high permeability and the small degree anisotropic reservoir to rebuild UGS.