Log Interpretation of Condensate Gas Reservoir in Yanqi Basin

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%.