Study On Cycle Water Flooding Method Of The Line Well Pattern

The method of cyclic water flooding is to increase and reduce the amount of water flooding by adopting some kind of specified procedure.First,the high volume of fluid is injected into the oil layer to increase the pressure of the oil layer.After a period of time,the water flooding is reduced,and a step-down process is formed,which results in the pulse action of the oil layer,and the unstable pressure drop in the reservoir is established,which is a kind of water flooding method that has not been developed by the low permeability reservoir that was previously not affected by the water flooding.This technique is one of the main methods for the oil field to enter into high water-cut reservoir.Cycle water flooding technology is used in line well pattern of low permeability layer in this paper.On the basis of precise remaining oil analysis and according to the characteristic of reservoir exploitation of line well pattern,layer section method of cycle water flooding of line well pattern is optimized by taking interactive stopping-flooding cycle method in upper and lower segment of the whole well,and the cycle water flooding intensity and water flooding cycle suitable for the line well pattern is researched combining with numerical simulation technology;The feasibility of cycle water flooding of the line well pattern is evaluated comprehensively by testing and studying the features of cycle water flooding of the line well pattern.After the implementation of the scheme,the production decline of the pilot area is slowed down,and the utilization of the oil layer is improved,thus further reducing the inefficient circulation water flooding,and excavating the remaining oil potential.The efficiency of the well is significant,and the second-line well is the worst.The research results of this project have important guiding significance for the promotion of the pattern of well pattern.