套衫
We have gotten overpull while tripping out. 起钻遇卡。
Pull the casing into tension with 20000lbs overpull. 多提20000磅，使套管拉伸。
Lock the hydraulic connector and test the connecting force with 50000 lbs overpull. 锁紧液压连接器，用5000磅试验连接拉力。
The overpull phenomenon is solved effectively in horizontal well by selecting good lubricants. 优选润滑剂，解决了水平井拖压防卡的问题。
