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深部咸水层CO2地质储存属于环保型工程项目,开展地质评价来确定良好的储盖层是实现CO2地质储存长期、有效、安全封存的首要前提。储层地质评价内容主要包括储层的物理性质及其注入能力等;盖层地质评价内容主要包括盖层发育特征及封闭能力等。在规划选址到工程选址的不同阶段,储盖层评价的内容和对象应根据不同阶段的目的依次提高精度和量化程度。通过国内深部咸水层CO2地质储存工程场地选址阶段划分,结合储盖层地质评价的主要内容,初步建立了储盖层适宜性评价指标及其分级标准,对国内深部咸水层CO2地质储存工程场地选址中的储盖层地质评价及适宜性评价工作具有一定的指导意义。
The geological storage of CO2 in deep saline aquifers is an environmental protection project. To conduct geological evaluation to determine good reservoir cover is the most important prerequisite for achieving long-term, effective and safe storage of CO2 geological storage. The contents of reservoir geological evaluation mainly include the physical properties of the reservoir and its injection ability, etc. The geological evaluation of the overburden mainly includes the developmental characteristics of the overburden and the sealing ability. In the different stages of planning site selection and project site selection, the contents and objects of reservoir evaluation should improve the accuracy and quantification according to the purpose of different stages. Based on the site division of CO2 geological storage project of deep saline aquifer in China and the main contents of reservoir geological evaluation, the reservoir suitability evaluation index and its grading standards are preliminarily established, and the geological storage of deep saline aquifers in China The geological evaluation and suitability evaluation of reservoir caprock in the site selection of construction site is of guiding significance.