Development And Distribution Of Excellent Source Rocks And Their Contribution To Petroleum Accumulation In Raoyang Sag

Integrated appling oil and gas test data of geochemical analysis,well logging and seismic data,etc,this paper studies the development and distribution of source rocks and their contribution to petroleum accumulation in Raoyang Sag.Making use of source rock organic geochemical data,combined with the logging source rock evaluation,each period of source rock geochemical characteristics and their vertical and plane distribution law are classified and described.The abundant source rocks mainly developed in the lower of Member 3,the upper of Member 3 and the lower of Member 1 of Shahejie Formation.According to organic geochemical analysis data of source rock and crude oils,the correlation between crude oil of different oil family and source rocks is researched,and the genetic type and origin of crude oils are clarified.Using source rock hydrocarbon generation of thermal simulation experiment data,it quantitatively establishes hydrocarbon generation model and calculates the amount of hydrocarbons generated,discussing excellent source rocks contribution to petroleum accumulation.These obtained research results and cognition are of great significance to Raoyang Sag deeply exploration.