The spatial heterogeneity of carbonate fractured-vuggy reservoir is very strong in the Tahe oilfeild.Interwell reservoir prediction mainly depends on the application of seismic data.However,the results of deterministic seismic interpretation have multi-solutions.A geostatistical inversion method based on Markov Chain and Monte-Carlo algorithm is adopted for fractured-vuggy reservoir quantitative prediction and uncertainty evaluation.Firstly,geological prior information of the target zone can be obtained by geological regularity and deterministic interpretation results from well logging and seismic survey.Then,controlled by suitable geostatistical simulation parameters of the study area,the geostatistical inversion can be done, yielding many equal probability results of reservoir type volume and impedance data volume.Based on these results,the uncertainty of inversion can be analyzed.The method provides an effective seismic-driven way for quantitative prediction of fractured-vuggy reservoir,giving better solutions to the problems of the cave vertical depth positioning and the uncertainty evaluation of seismic prediction results.It is of great guiding significance for the modeling and characterization of fractured-vuggy reservoir.