The research on evaluating the damage of sidetracking to reservoir is a task that is necessary for oil field to urgently solve.

• 评价侧钻井对油层的伤害研究是油田需要解决的一项课题。从渗流流态讲,侧钻井是水平井渗流的一种近似,因此不能沿用裸眼井复合油藏试井模型。