本文由流体力学的基本原理出发,根据二相混合流里单位质量体积的关系,利用数学方法,推导出一个二相混合流在圆断面管道输送的压降计算的收敛迭代格式——华北油田公式Y~((n+1))=Y~((n))+(A-Y~((n))(1n(1-Y~((n))/A)-F)/1+Y~((n)-A)并根椐华北油田的实验数据,与国内外现用的十个著名公式作了对比计算,结果表明华北油田公式优于其它公式,可以作为规划设计油田时的参考。 Based on the basic principle of fluid mechanics, according to the relationship between unit mass and volume in two-phase mixed flow, the convergence iterative scheme of pressure drop calculation of two-phase mixed flow in circular section pipeline is deduced by mathematical method. Y ~ n + 1 = Y ~ n + AY ~ n n - 1 ⁢ n ~ n / A - F / 1 + Y ~ (n) -A). Comparing the experimental data of Huabei Oilfield with the ten well-known formulas at home and abroad, the results show that the formula of Huabei Oilfield is superior to other formulas and can be used as a reference in the planning and design of oilfields.