The Research Of The Transition Zone Expansion And Infilling Adjustment In The Fourth Bands Of The Western Transitional Zone In The Second South Western Block

The Sanan Oilfield after years of development,has entered the high water cut stage,the remaining oil is highly dispersed,pure oil has a set of basic well pattern infilling,no further encryption potential,so the development focus on oil edges throughout the region;throughout the development,the transition zone of four bands of geological data is less,only within the region the deployment of wells network,from the SA group II oil water line is more than 106 ~ 315 m distance not well.With the development of well seismic combined interpretation technology,it provides technical support for the development of the region of the transition zone.In this paper,The Western transitional zone of the second south western block as the research object,using well seismic integrated interpretation technique,re recognize the no-well of regional structure and reservoir condition of the transition zone of four bands,defined oil-water boundary,The fourth bands of the transition zone reached0.76km2,Geological reserves of 580 thousand and 600 tons.The SA group? reservoir of the no-wells area is the delta front outer facies deposit,and develops from north to south.The average thickness is more than 6 meters,which is up to the industrial development standard.On this basis,according to the characteristics of the reservoir,it is clear that 150 m injection production well is reasonable,Combined with the current well pattern in the transition zone,we have optimized the well pattern deployment mode,deployed a set of 150 m five point method area well pattern,realized the coordination with the once infilling adjustment in the well area,and considered the late well pattern evolution to meet the needs of the Chemical flooding production.At the same time,according to the dynamic development law of the transition zone,four bands and external expansion areas are optimized to obtain a better development effect.The application of well seismic joint interpretation technology in the region of the transition zone and the pattern of well network deployment will be of certain guiding significance for the development of the whole area in the future transition zone.