For the reef carbonate reservoirs

the vxdarious lithology and pore types and the complex throat structure are the fundamental factors of complex pore-permeability relations

which greatly affect the accuracy of the reservoir parameters

especially the logging interpretation of permeability

and bring great difficulty to the reservoir evaluation. First

the reef-flat facies reservoir of Feixianguan Formation in X Gas Field is took as an example to define the amplitude difference of the logging curve by the change characteristics of density curve and acoustic time difference curve on the basis of clarifying the four property relationship of the reservoir and according to the data of core analysis

casting thin section

mercury injection analysis and logging.And than

the cross plot of the new parameters and the density curve is made to establish the pore type identification template by the multiple regression analysis method. At last

the reservoir parameter interpretation model based on the pore type identification is established to make the accurate interpretation of the parameters of the reef-flat facies porous reservoir. The interpretation results show that the logging interpretation model with pore identification ability can significantly improve the logging interpretation accuracy of reef-flat facies reservoir

and can provide technical reference for the logging interpretation of the same reservoir type.