In the gravity type oil water separating field, the shearing field mainly exists in all kinds of collison packing and flow boundary of vessel.
在重力式油水分离场中，剪切流场主要存在于各种聚结填料中和器壁的流动边界层内。
2
Gravel packing in horizontal holes is quite different from that in straight holes because of the direction of the gravel packing being vertical to the gravity direction.
在水平井中，由于砾石充填方向与重力方向相垂直，因而其充填规律与直井存在着根本的区别。
3
Suspension structure is adopted for the gravity-flowing packing machine with tri-flow control.