套衫

We have gotten overpull while tripping out. 起鉆遇卡。

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. 鎖緊液壓連接器，用5000磅試驗連接拉力。

The overpull phenomenon is solved effectively in horizontal well by selecting good lubricants. 優(yōu)選潤滑劑，解決了水平井拖壓防卡的問題。