Reservoir and caprock evaluation of CO_2 geological storage site selection in deep saline aquifers

CO2 geological storage belongs to environmental protection projects,reservoirs and caprocks evaluation are the important base for CO2 sequestration safely for long period of time.Reservoirs geological evaluation contents include physical properties and CO2 injectivity,while caprocks geological evaluation contents include development characteristics and quantitative sealing capacity.In the different stages of planning and engineering site selection,contents and objects of reservoir and caprock evaluation should improve the precision and quantization degree according to the evaluation purposes.At the basis of CO2 geological storage engineering site selection stages division,combined with reservoirs and caprocks evaluation contents,suitable evaluation indexes and grading standard are established preliminary,which provides guidance for reservoirs and caprocks geological and suitable evaluation of CO2 geological storage engineering site selection in deep saline aquifers of China.