Study On Potential Evaluation Of Huangyure Structural Belt In Eastern Sag Of Liaohe Oil Field

This paper takes Huangjindai,Yulou and Rehetai oilfields as a whole to study.Based on the theories and methods of modern fine reservoir description,dynamic analysis and reservoir engineering,the residual oil distribution range is studied by dynamic and static analysis.Firstly,in view of the static characteristics of the Huangyure structural belt,an in-depth study has been carried out,and the similarity and variation regularity among them have been summarized,the new understanding of the blank area and complex fault morphology between oil field and fault block effectively simplifies the regional structure and unifies the understanding of underground geological accumulation and hydrocarbon migration.Secondly,according to the updated structure and the field production,the main remaining potential is distributed in fault corner,injection-production imperfect area,part of unused reserves and low-resistivity zone.Considering that Huangyure oilfield is an old oilfield with long development time,the residual potential of fault corner type is mainly distributed in the small fault blocks near the periphery,and the areas where injection and production are not perfect are mainly the well areas with extended boundaries,unused reserves are mainly distributed in non-main strata.Finally,according to the characteristics of different remaining oil enrichment,it is necessary to select sidetracking wells at the corner of fault in Yu 50 block,and transfer adjacent wells to other wells,by adjusting the well pattern in the expanded area of Re 8 block,re-selecting the injection wells,improving the water injection efficiency and improving the present situation of oilfield development,the daily oil production of Huangyure Oilfield has reached 323 tons,and the annual oil production in 2019 has increased 7,943 tons compared with that in 2018.In this study,the whole structure,the present situation of oil and gas production and the distribution characteristics of remaining oil in Huangyure structural belt are deeply studied,which improves the degree of water flooding control,the degree of reserve production and the actual production capacity of the oilfield,the work of tapping the potential of high water cut oilfields has been carried out effectively,which provides theoretical guidance for further development of oilfields.