| The remaining oil distribution is always the most concerned problem for developers.There are many problems in the late development of high water cut reservoir,and the significance of accurate prediction of remaining oil distribution is more prominent,which could provide evidence for adjusting development in later period and improve the development benefit.The reservoir of Minghuazhen formation in Jidong Oilfield is a shallow and complex fault-block reservoir which has high porosity and permeability.In the initial stage of development,the driving power is border water,some layer turned into artifitial flooding in the middle and late part of the development,right now it is in a state of high water content.Based on the study of oil reservoir engineering analysis of the study area,the article for the first time uesd phased reservoir numerical simulation technology in the study area,achieved high-accuracy history matching,and obtained a reliable distribution of remaining oil.On the basis of summarizing the previous research on controlling factors of remaining oil in meandering stream deposit,the remaining oil distribution in the study area is classified and summarized.In the study,the geologic model is optimized by the method of numerical simulation,in order to make the geologic model more close to the actual production.As for the shape and property of abandoned channel and lateral accretion body in meandering stream deposit,we found a method to contrast and correct them by using numerical simulation.Finally,in view of the characteristics of reservoir and the distribution of remaining oil,in order to achieve the ultimate goal of enhancing oil recovery,this paper puts forward some measures and suggestions for tapping potential benefits. |
