The source function of the partially-penetrated well in the center of a reservoir with water coning is consistent with the source function of the partial penetration at an early time.

• 具有井筒效应的源函数（随时间变化）之特性是在开始时为水平直线，井筒效应结束后，会与一般的无限表面圆柱源函数或无限线源函数相同。