Abstract: Combined with production data,production prediction curve and formula of partially perforated horizontal well were obtained.According to the laws of energy conservation and multiphase fluid flow,calculation method of outflow curve for sucker rod pump in horizontal well and calculation models of pressure drop in horizontal section were deduced,and pressure drop was calculated separately with an example in every part of production system of horizontal well.An example show that the deduced formula with higher calculating precision are worth to be popularized and applied.It is pointed out that if pressure drop in the horizontal section exceed 0.1 MPa,the nodal system analysis is used to horizontal well must be considered.

Key words: horizontal well, pressure, flow rate, optimization, rod pump, model

摘要： 结合现场实际资料得出了部分打开水平井产能预测曲线及公式,根据能量守恒定律及多相流体运动规律,导出了水平井有杆泵抽油时流出曲线的计算方法和流体在水平段流动时的压降计算模型,并用实例分别计算了水平井生产系统中各部分压降.实例表明,导出的公式计算精度较高,值得推广和应用,并指出如果水平井段压降超过0.1MPa,则对水平井进行节点系统分析时,应该考虑水平井段的压降.

关键词: 水平井, 压力, 流量, 优化, 有杆泵, 模型