Cause of low water-cut oil layer in Yanqi Basin and the interpretation method;

Evaluation of Reservoir Heterogeneity by Flow Unit Index-an example from Baobei block of Baolang oilfield，Yanqi basin;

Characteristics and pool forming pattern of oil and gas reservoirs in Yanqi bas in.;

Thro ugh quantitative statistics of petroleum micro-constituents from wells by sampl e analysis and study of various coal-measure facies parameters in Yanqi basin ,it is found that they are high in gelation.