Abstract:

Liaohe Beach starts from Hulu Island in the west and ends at Boyuquan in the east.The principal hydrocarbon source rocks are Sha-3 member and the reservoir rocks are Sha-1 member.According to the geological,geophysical and geochemical data of the beach area as well as some parameters of its neighbouring area,a simulation of hydrocarbon generation and expulsion was wade.The results suggest that the principal source rocks are Sha-3 member,and secondly Sha-1 and Sha-2 members;Gaizhoutan,Hainan and Qiugshui Sags are main hydrocarbon generation centres,and Hainan Subsag and the south of Jinzhou 9-3 Subsag are secondary.It is also suggested that the east sag of the simulated area is mainly oil-bearing type and the west sag is mainly gas-bearing type.Major hydrocarbon genention stage started from Dongying period,the peak period of hydrocarbon expulsion started from Dongying 1～2 stages.Hydrocarbon generation centres coincided with hydrocarbon expulsion centres.\;

Key words: simulation parameter, hydrocarbon-generation, hydrocarbon-expulsion, Liaohe Beach