射孔关键参数对水平井产能的影响

Influence of perforation parameter on productivity of horizontal well

为了系统研究射孔关键参数(孔深、孔密、孔径等)对水平井产能的影响规律,文中将射孔完井表皮因子模型和根据点源解思想建立的水平井产能预测模型结合起来计算不同射孔参数下的水平井产量。分别对不同的射孔参数下的水平井产量进行计算,并绘制关系图,分析各射孔参数对水平井产能的影响。研究结果表明:选择合适的射孔方案和射开程度对水平井产能有着至关重要的影响。

In order to study the influence of perforation parameters （perforation length, perfo- ration density,perforation diameter and so on）on the productivity of horizontal wells,this paper combines the skin factor model of perforating completion with the semi- analytical productivity prediction model of horizontal wells to calculate the skin factor and productivity of horizontal wells to different perforation parameters.Through calculating productivity of horizontal wells to the different perforation parameters respectively and drawing the relationship charts, the influence of perforation parameters on skin factor and the productivity of horizontal wells are analyzed.The study results show that select the appropriate perforating programs and the shot was the extent of horizontal wells has a critical influence.