论文部分内容阅读
压差卡钻是钻井中经常出现的卡钻事故。压差卡钻的三种控制方法:调整钻具组合,调整钻井液性能,控制压力平衡。调整钻具组合包括使用加重钻杆,使用带稳定的钻具,控制斜井开槽,减小静止时间四种控制方法;调整钻井液性能着重对泥饼的性能控制;在控制压力平衡中,主要采用过平衡。卡钻控制方法对卡钻的预防很有效果。
Pressure differential sticking is a frequent stuck pipe accident in drilling. Three ways to control the pressure difference stuck: adjust the drilling assembly, adjust the drilling fluid performance, control the pressure balance. Adjusting the drilling tool combination includes using four kinds of control methods: heavier drill pipe, using stable drilling tool, controlling inclined groove, and reducing rest time; adjusting performance of drilling fluid focuses on performance control of mud cake; in controlling pressure balance, The main balance. Card stuck control method is very effective in preventing sticking.