Carboniferous Tournaisian C

1

t reservoir of F block in the Caspian Basin

deeply buried under gypsiferous rock

which seriouslyaffects the quality of seismic data

is difficult to be predicted by conventional methods with unfavorable factors of low seismic resolution and imaging quality

restricting the progress of the exploration. By the application of faciesconstrained reservoir prediction technology

3 sedimentary facies were confirmed according to integrated analysis of seismic facies

logging facies and core data. Under the control of sedimentary facies

2favorable reservoir zones were predicted by amplitude which is the most sensitive attribute for reservoir prediction. Application in favorable reservoir zone Ishows that 100% of the faciesconstrained reservoir prediction matches the realdrilling results.Therefore

under the constraints of sedimentary microfacies and sedimentary characteristics

seismic attributionscan be used to accurately predict and characterize complex reservoirs.