The Hydrocarbon Reservoir Formation Model Of Ma131 Well Field In Of Junggar Basin

Guided by the theories of petroleum system and petroleum geology,the geological characteristics are studied,the process of hydrocarbon acccumulation is analysed,the correlations of oil and source-rock is researched,the model of hydrocarbon accumulation is established,the main factors controlling oil accumulation are expounded in Ma131 well Field by using of geology data,seismic data,log data and analytical data.Research shows that the study area is mainly distributed in source rocks of Fengcheng and the Lower Urho Formation,reservoir type main is lithology-fault reservoir,while in the southwest part development fault block reservoirs.According to the density of crude oil,wax content,tricyclic-Terpene,crude oil distributed into three categories.According to the history of hydrocarbon and the temperature of fluid inclusions judged that Fengcheng Formation source rocks hydrocarbon phase is from 260 Ma to 200 Ma,Formation source rocks hydrocarbon phase is 170 Ma ~ 120 Ma,mainly oil and gas accumulation in the early and mid-stage Baikouquan during the deposition.It is concluded that three main controlling factors of hydrocarbon accumulation are as following: Structural slope break zone,sedimentary facies and the deep fault system.According to the above features,the establishment of The Hydrocarbon Reservoir Formation Model of Ma131 well Field is "Fengcheng-fault-" reservoir model and " Lower Urho-unconformity-fault-Baikouquan " reservoir model.