The Optimization Research Of Layer And Well Pattern On The Thin And Poor Reservoir

The reservoir has entered the high water cut period after50years of industrializeddevelopment.The secondary infilled well pattern mainly develop the poor and thin reservoirsunder P4,which effect is poor,the well pattern has some problems such as incompletedinjection recovery, poor producing extent and so on.Therefore,there is a need of reaserch onwell parttern in order to improve the recovery efficiency、prolong the production time.Thesehave the long-term economic efficiency、the social efficiency and the vital significance.In the paper, system Assessment of the effect of secondary infilled well pattern is donebased on the actual conditions of the block and dynamic and static field data, and ameta-analysis was done with Fuzzy Comprehensive Judgement and Analsis Hierarchy Process(AHP).Geological modeling and mathematical modeling is established by professional software,and analyzed the remaining oil distribution,do the history match for development effect, theresult shows a high fitting degree.Based on the reservoir numerical simulation, we regulated layers combination andinjection-production system, prepared four development program, and predict thedevelopment effect and economic profit of the four program. Compared with the result, thedevelopment program (plan3) is the best considering with development effect and economicprofit.