Horizontal Well Section Completion Fluid Producing Profile Optimization

The main problem of the development of bottom water reservoir is the uneven bottom water cresting,once the bottom water breakthrough,the oil production will falling fast.ICD/ICV completion section is an effective way to control this problem.This paper mainly concerned the application of ICD/ICV in horizontal well development.By using the methods of seepage flow mechanics,mathematical optimization algorithm,establish a set of ICD/ICV parameters optimization method,to realize the optimization in the process of production.This article first use the seepage mechanics method to establish the prediction method of sectional completion fluid producing profile of the bottom water.This method applies to predict the fluid producing profile and the pressure distribution of a horizontal well in infinite formation,and the reservoir is in steady state.The horizontal wellbore is divided into internal and external two parts.Considering the variable mass flow within the wellbore fluid in the wellbore,the pressure loss of perforation,the pressure loss of fluid flow through the annular space,and the pressure loss caused by screen completion skin.Using the superposition principle establish the wellbore and reservoir coupling model.Provide a solving method when the well is in constant bottom hole pressure or constant fluid volume production mode.Based on the above established the balance of production optimization research in horizontal well section completion.The method fully considered the ICD/ICV in horizontal well effect in actual production.Through the establishment of the appropriate objective function and constraint conditions,get in line with the target fluid producing profile.This method can also be applied to heterogeneous formation fluid producing profile optimization of horizontal wells.Established a model of predict the water breakthrough time in sectional completion horizontal wells.ICD/ICV impact on production of horizontal well in the actual production is considered.Get in line with the goals of the horizontal well section completion fluid producing profile.Provide basis for rational production of horizontal well.This method can also be applied to heterogeneous formation fluid producing profile optimization of horizontal wells.