| Horizontal well drilling,as one of the most efficient production technologies,has been widely used in oil fields.Due to the horizontal structure characteristics of horizontal wells,there are some problems such as bottom water coning and high water content rising speed when using horizontal wells to develop bottom water reservoirs,which seriously affect the economic benefits of oil fields.In order to effectively balance liquid production profile of horizontal wells and reduce water content rising rate,new water control completion methods for horizontal wells have been applied in recent years,mainly including ICD,ICD with continuous packers and AICD water control completion.According to the structural characteristics,water control mechanism and application effect of new water control completion devices,this thesis studies the oil-increasing and water-controlling characteristics of different new water control completion methods,and establishes flow mathematical models of ICD,ICD with continuous packers and AICD water control completion devices respectively according to theoretical analysis.Based on the coupling of various flow models of the horizontal well,wellbore and water control completion section,a new water control completion production dynamic prediction coupling model for horizontal wells is established.Based on the predictive coupling model,the production dynamics of different water control completion schemes are simulated,and the optimization design of new water control completion methods and completion parameters is carried out with water content and oil production as the optimization objectives.A new optimization method of water control completion and completion parameters design method for horizontal wells is proposed,and practical examples of horizontal wells are analyzed by using this method,which provides theoretical guidance for realizing efficient and economic development of horizontal wells. |
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