考虑井筒压降的水平井产能研究

The Horizontal Well Productivity Research of Considering Well-Bore Pressure Dropping

在水平井实际生产时,井筒流动和油藏渗流是一个相互影响、相互作用的整体,合理描述水平段的流体流动规律和压降关系,对于准确预测水平井产量有重要意义。从水平井渗流机理出发选取底水驱油藏的采油指数和Novy模型,通过体积平衡原理建立稳态条件下水平井筒流动和油藏渗流的耦合模型,对考虑井筒压降的水平井产能进行了研究,对该模型在层流和紊流的条件下进行求解,分析了影响水平井产能的各种因素。

When the horizontal well production,well-bore flow and reservoir percolation is a mutual influence,interaction of overall,reasonable description level law of fluid flow and pressure drop of the relationship,is important to predict the horizontal well production. Starting from the horizontal seepage mechanism,selection of bottom water drive reservoir productivity index and Novy model,through the volume balance principle,set up under the condition of steady state level coupled model of well-bore flow and reservoir percolation,on considering well-bore pressure drop of the horizontal well productivity were studied,the model solution can be obtained under the condition of laminar flow and turbulent flow,analyzes the factors affecting horizontal well production capacity.