Research On The Mechanism Of Combination Flooding In Horizontal Wells In Qianshan Reservoir

Lots of successful horizontal wells have proved that the horizontal well water injection technology has greatly improved the development effect of low permeability oil field.Horizontal well water injection can improve the efficiency of water injection,improve the degree of recovery,and further improve the level of reservoir pressure maintenance,and achieve good economic benefits.However,due to the relatively low viscosity of the horizontal well,the injection rate is very large,and the horizontal well injection technology is always a difficult problem.Once the injection water breakthrough,horizontal injection wells will be difficult to control.With the widespread application of horizontal well water injection,the deployment and optimization of horizontal well injection production well network will be a hot topic in the future.This thesis is mainly to determine the injection production well pattern optimization of reasonable injection production parameters,by means of experimental study and numerical simulation,and the adjustment of injection means,will provide help for the horizontal well water flooding reservoir stable production.Study on complex structure wells injection development based on the understanding of water flooding on Qianshan and Shengxi reservoir.The study provides practical solutions and suggestions for water injection adjustment and further enhancement of oil recovery in Qianshan oilfield.