A Building Potential Study On Jurassic In Wangyaonan Ansai Oilfield

Ordos basin is a important energy base, with much of oil and gas resources, in china.---With oil and gas wide distribution, oil layer segment much, reservoir thickness big. and so on. Ansai oilfield is a typical slant of low permeability, unusual low permeability reservoirs,which is located in Middle East slanting the southern of Shanbei slanting in ordos basin. In the past it is known to the world with low pressure, low production, low permeability and effective permeability, only in recent years, we has a mass of first-hand data about the shallow reservoir by ansai oilfield exploration work, Then we got some preliminary understanding and made breakthrough progress, we has also continued the new findings,locally, about long1reservoir group and the Jurassic delay10, deferred9and delay8reservoir group. But ansai oilfield existing knowledge is hard to meet the needs of exploration work, in order to meet the needs of the development of oilfield in ansai oilfield, we have a building potential study sbout Jurassic in Wangyao Ansai oilfield.This paper predicts favorable hydrocarbon enrichment zone,which adopts stratigraphic correlation with small layer of fine division, single sand body tracking, sedimentary environment with sedimentary facies analysis, reservoir macro and micro characteristics research, reservoir types and reservoiring pattern.,oil and gas distribution research. we evaluate and prediction having the formation-lithologic trap conditions favorable facies belt or block,basing on comprehensive analysis in sedimentary and reservoir characteristics and the hydrocarbon enrichment, last of all,we point out that the construction of a productivity of studied area recent zone.