Abstract:The nonuniform and fractured properties of carbonate formation make carbonate reservoir prediction more difficult. The use of fractal theory causes it hopeful to solve such a complicated problem. The quantitative parameter that describes fractal is called fractal dimension. We recommend two fraetal dimension calculation methods: fractal dimension calculation in time sereis and fractal dimension calculation using amplitude spectrum. The two methods were respectively used to make fractal dimension calculation of the seismic line which links some wells in Danfengchang gas field in Sichuan province. As a result, they brought satisfactory result and led to solving the tough problem which can not be solved in multiparameter prediction. We think fractal theory is potential in reservoir prediction.