Ying Wang Oilfield 65 Wells Chang 8 Reservoir Water Flooding Technology Research

Waterflooding Technology Ying Wang oilfield Chang 8 oil reservoir of Yanchang formation is not yet mature and the question need to be furtherstudied.In order to make better use of the injected water efficient and reasonable development of the reservoir,the urgent need for comprehensive evaluation of oilfieldwater injection effect.This paper studies geological features of the oil from the start,the finestratigraphic classification and correlation,in-depth study of thesedimentary facies,sand body distribution,reservoir characteristics,seepage physical feature,on this basis the author analysis and researchstatus of this area of waterflood development,calibration of water drive recovery,reasonable division of layer series of development of water flooding,the feasibility and adaptability of well network analysis and evaluation,finally carries on the design to the injection process andadjustment scheme.Research shows that,there servoir layers,layer,planeheterogeneity isstrong;bound water saturation and residual oil saturation is high,isotonicpoint relative permeability and residual oil water relative permeability value is low,with the increase of water saturation,relative permeability of oil drop,water relative permeability but 1 don't get up,causing the oil well yielddropped substantially,relative production index up or not,the traditional method by extract prolonged stable production period is limited,the difficulty of field larger stable;the simulation results of adjustment scheme,by the end of 2032 cumulative production 57800 tons,comprehensive water content is 92.49%,the cumulative increase of 41100 tons,recovery degreeand increase oil production were the highest,the best comprehensive development effect.