Abstract: Based on reservoir conditions, hydrocarbon characteristics and well test data of the condensate gas reservoirs in Yanqi basin,three methods are proposed to use both conventional log data and post-cementing delayed compensated neutron log data to identify condensate gas reservoirs. They include dineutron porosity differential,delayed compensated neutron log recognition after well-cementing and dual compressional wave modulus differential. Real data verification shows that coincidence rate of interpretation results is over 80%.