Wu Xia Area Of Junggar Basin Multi Series Of Main Controlling Factors For Hydrocarbon Accumulation Study

Wuxia area was a zone of bruchfalten affected by multiphase tectonic activity,have many faults and its fold morphology were very complicated.Therefore,it is necessary to summarize the law of oil and gas accumulation,to find out the controlling factors of hydrocarbon accumulation,to set up the model of oil and gas accumulation,to indicate the direction of the next exploration and deployment,and to provide the geological basis for oilfield production and income increase.Wuxia area Fengcheng Formation and Wuerhe formation and development is two sets of good source rocks,the whole is a set of low porosity and low permeability reservoir,the Triassic reservoir comprehensive analysis should be set in the hole,low permeability reservoir,the whole Jurassic reservoir is a high hole,high permeability reservoir.Wuxia area mainly developed reservoir,composite reservoir,lithologic and stratigraphic reservoirs in four reservoirs,oil and gas reservoirs are mainly located in the region of fracture and associated with the faults,in the longitudinal direction of the oil and gas distribution is more extensive,span is relatively large.In different oil and gas areas,the vertical distribution of oil and gas is obviously different.Wuxia area above the unconformity is mainly sandstone and conglomerate,weathered clay layer top of Triassic Baijiantan formation in most areas lack of multiple layer systems are oil and gas shows.The development of Wuxia area unconformity formation of hydrocarbon migration passage systems.It can play an important role in migration and accumulation of oil and gas in the study area,and can also play an important role in the formation of oil and gas in the study area.Wuxia area mainly developed four kinds of oil and gas accumulation model: which are the earlier model of lateral transportation through sandbody-unconformity,the multi-phase model of vertical transportation through fault,the multi-phase model of “z” type transportation,and the later model of stepped transportation.Xiazijie oilfield in Wuxia area of oil and gas accumulation in the process of filling occurred four times.Wuxia area structure is quite complex,fault and unconformity are well developed in the study area,the unconformity forming process and common faults often control research area of oil and gas exploration,so in the future,should the study area development and a large number of fault unconformity as the key exploration targets.