【摘要】 根据水平井井身结构特点，给出了流体进入水平井段的５种流入剖面。利用水平管中单相液流的压降计算公式，导出了流体进入水平井段５种情况下的沿程压降计算公式。实例计算表明：不论流体进入水平井段的形式怎样，沿程总压降都不会超过总流量１次流入和流出时的沿程总压降。如总压降不超过１ｋＰａ，则在水平井节点系统分析中，可不考虑水平井水平段的压降。更多还原

【Abstract】 According to the borehole geometry of horizontal well,five kinds of inflow section where fluids flow from reservoir to horizontal section were given.Based on pressure drop calculation formula of single flow in horizontal tube,pressure drop calculation formula are inferred for five kinds of condition.Examplecalculation shows that,in whatever way the fluids flow into horizontal section in various forms,total pressure drop along horizontal section is smaller than that total flow consumes through horizontal section.If total pressure drop is smaller than one kPa,the pressure dorp of horizontal section is negligible in the system analysis of horizontal wells.更多还原