Study On The Characteristics Of Water Flooding And Displacement Of Water In The North-North Block Of Lamadian Oilfield

It is well known that Daqing Oilfield is the largest oil field in China,and then the oil field experienced long-term waterflooding development,polymer flooding and subsequent water flooding,there is a serious inefficient or inefficient cycle,resulting in high energy consumption,so that our mining costs are increasing,To the effect is minimal Based on the study of the ineffective circulation and the remaining oil,this paper compares the characteristics of rock mineral,porosity and permeability,and analyzes the macroscopic microcosmic The characteristics of the remaining oil distribution,through the numerical simulation and statistical analysis of the results of the new drilling flooded layer,to find out a class of reservoirs follow-up waterflood stage of the characteristics of the ineffective cycle distribution,the potential for subsequent water flood control potential to form a follow-up Water-driven adjustment and tapping the potential.With the improvement of the ineffective loop recognition method and the deepening of the understanding of the structural unit,through the technical research in recent years,according to the different ineffective circulation distribution type,guided by the structural interface theory,combined with the ineffective circulation thickness,Control ineffective loops,reduce energy consumption,and improve development effectiveness.The north part of the Lamadian Oilfield is located in the north of the 18 th row of the oil field and is located in the northern dumping area of the Lamaidian short axis structure.The oil layer can be divided into four depositional units from the deposition time: Portugal ?,Portugal ?,Portugal ?22,Portugal I1-2 reservoir and other reservoirs.Since its inception in 1973,the foundation well has adopted a 600 m and 300 m wells with a split-point injection area.