Analysis Of Reservoir Fine Geologic Description And Dynamic Of Gaotaizi Oil Reservoir In Western Area Of Sazhong Development Zone In Daqing

The central western Gaotaizi block is located in the Saertu oilfield central infill wells on2009 put into development,because of the well development of encryption block more oil,reservoir physical property is poor and near the high water aquifer,the block based higher than expected water,water cut rising fast,short period has entered extra high water cut production period.In order to further extend the stable stage of the block and realize the purpose of stabilizing oil and water control,it is necessary to make a detailed geological study of the reservoir,to find out the distribution characteristics of remaining oil,and take timely measures to tap the potential.The infill well network in the western part of central China has been exploited in the extra high water cut stage.The water injection is inefficient,ineffective and serious in circulation.Through the comprehensive analysis of dynamic and static data,the accumulation area of remaining oil is found.In view of different reservoir microfacies and single sand body's use and water flooded condition,various measures are optimized.This paper introduces the Gaotaizi geological characteristics and development situation of the Central West,to further improve the recovery rate,fine description of the reservoir,the analysis of sedimentary units of the division,types and characteristics of sedimentary and reservoir heterogeneity;through numerical simulation,obtained the Central West plane distribution of remaining oil saturation,and the results of numerical simulation data,statistical analysis of the distribution of residual oil in the West Central District,distribution characteristics and laws of the Central West plane of residual oil are summarized.In view of the problems existing in the block and the distribution of remaining oil potential,the adjustment idea is worked out,the work arrangement of fine tapping potential is determined,and the effect prediction and benefit evaluation are carried out.Summed up the practice of mining process,solve the influence factors,find out the single well potential,and vigorously promote the fine analysis,fine tapping,fine adjustment,through comprehensive adjustment wells,the development effect reached the limit,for some theoretical and practical basis for water flooding in ultra high water cut stage "control water tap" work..