Lishui36-1 structure lies in the middle-eastern part of western subsag of Lishui Sag, Taibei Depression , East China Sea Shelf Basin. The subsag is a Cenozoic faulted basin and elongated in north-east direction. The Upper Paleocene Lingfeng Formation and Mingyuefeng Formation are main oil-gas bearing formations. On the basis of systematic sedimentology and well-logging facies studies of 3 Wells in Lishui 36-1 Structure, clastic sediments in the Upper Palaeocene were mainly from the Minzhe Uplift Area to the west of Lishui Sag and Lingfeng Uplift Belt in middle Lishui Sag, and probably also from the Yandang Uplift Area in the north part of the sag. Different provenances controlled the development and distribution of depositional systems by synsedimentary faulting and sea-level changes.  In the subsidence stages of the Lishui Sag and rapid sea-level rise,  terrigenous clastics derived from the Lingfeng Uplift Belt were transported across the eastern boundary faults to the margin of the western subsag to form fan delta deposits, and further  into the center of the subsag to form deepwater turbidite fan deposits and neritic deposits. Meanwhile, clastics from the Minzhe Uplift Area were poured onto the western slope of the western subsag from different inlets to form fan delta deposits which might be further delivered to deepwater area to form deepwater turbidite fan deposits. According to the theory of oil-gas accumulation and provenance analysis, deepwater turbidite fan deposits and fan delta front deposits can form favorable source-reservoir-cap rock associations for oil-gas and are the most prospective areas for exploration.