Mesozoic and Paleozoic marine reservoirs are controlled by the difference between Meso-Cenozoic macroscopic tectonic evolution and dynamics of Yangtze massif.Analyses of the tectonic evolution of Yangtze massif since Indosinian epoch and the typical oil and gas reservoirs in different segments of Yangtze massif show that differential tectonic evolution has resulted in the different major sources of hydrocarbon fluids

preservation conditions and reservoiring evolution in different segments of Yangtze massif.The sources of hydrocarbon fluids in the Upper Yangtze massif are mainly of cracking gas cracked from oil and kerogen.Completely enclosed environment is developed in marine formations.The reservoiring evolution series include the formation of fossil oil reservoir

early gas reservoir and late gas reservoir

and the reservoiring pattern is early reservoir formation-later transformation-late gas accumulation.The sources of hydrocarbon fluids in Middle and Lower Yangtze massifs are mainly of secondary hydrocarbon generation and early primary oil and gas sources in marine strata.Enclosed systems occur in both continental and marine strata.The reservoiring evolution process is exactly the process of repeated reservoiring

reformation

reservoiring and destruction.The reseroviring patterns in the reversed area of fault depression include reservoirs occurring above the source rocks

residual primary reservoirs and secondary hydrocarbon generation

while that in reversed fault block areas include residual primary reservoirs and late secondary reservoirs.