Abstract：The Cretaceous AG Formation in Fula Depression is a typical lacustrine rift basin deposition with rich oil and gas resources.With the deepening exploration and development，it is necessary to analyze the sedimentary characteristics and distribution patterns of favorable sand bodies.To this end，based on sequence stratigraphic division，this paper conducts core analysis，well logging facies，and single well facies analysis by drilling and seismic data to determine sedimentary facies according to seismic facies，build sedimentary models，and then search for favorable areas for oil and gas exploration.The results show that the AG Formation mainly develops fan delta，delta，lacustrine sandstone，and mudstone sedimentary facies.Sand bodies carried by subfacies of fan delta front，underwater distributary channels in subfacies of delta front，mouth bar microfacies，and turbidite fan can serve as favorable reservoirs and are favorable exploration areas for the development of lithologic stratigraphic traps.The results can provide guidance for further oil and gas exploration.
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