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.