The Analysis Of Sedimentary System And Sequence Stratigraphy Of Hydrocarbon Source Rock Series In Yuanbaoshan Depression

On the basis of room map compilation and analysis to drilling core data,logging data,seismic data,geochemical data.Using basic theory and method of sedimentology,coal geology,oil and gas geology,sequence stratigraphy,four Species of sedimentary system that is lake sedimentary system,fan delta sedimentary system,braided river delta sedimentary system,nearshore subaqueous fan sedimentary system are recognized of hydrocarbon source rock series in Yuanbaoshan depression.Sequence stratigraphic division are carried out and sequence stratigraphic framework are established of hydrocarbon source rock series in Yuan Baoshan depression;Evolvement of sedimentary environment of every sequence are analyzed;The relationship that sequence stratigraphy control oil & gas enrichment conditions are discussed;Favorable exploration region of oil & gas source that was controlled by lithologic trap was forecast.