以前许多关于水平井的研究,都没有涉及到井筒压降,通过建立数学模型,提出了简单的解析式,来确定井筒压降对水平井流入的相对影响.用两个无量纲数的简单作用来说明水平井筒中的压降的相对重要性,一个是井筒中流动的雷诺数,另一个是被称为水平井数的新无量纲数.用这一相对关系,优化设计井筒的直径和长度来保证井筒压降不影响产能. Many previous studies on horizontal wells did not involve wellbore pressure drop, and established a simple analytical formula by establishing a mathematical model to determine the relative influence of wellbore pressure drop on the inflow of horizontal wells. With the simple function of two dimensionless numbers To illustrate the relative importance of pressure drop in a horizontal wellbore, one is the Reynolds number flowing in the wellbore and the other is a new dimensionless number called the number of horizontal wells. With this relative relationship, the diameter and length of the wellbore are optimized To ensure wellbore pressure drop does not affect productivity.