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通过近6年来对塔河油田处理裸眼水平井段卡钻事故现场总结和分析研究,认为常见的卡钻事故主要包括裸眼井壁坍塌掩埋钻具卡钻事故、裸眼井壁个别大石块滑脱造成的卡钻事故、沉砂卡钻事故、套管键槽卡钻事故和裸眼封隔器卡钻事故五大类。经过多口井现场实际处理过程初步积累了一定经验,如用酸浸的方法处理裸眼井壁坍塌所造成的卡钻事估、利用倒划眼方式处理套管键槽卡钻事故、利用大力上提活动解卡的方式处理裸眼封隔器卡钻事故等,在处理裸眼水平井段卡钻事故的修井作业中取得了良好效果。
Through nearly 6 years of field investigation and analysis of the stuck-pipe accident in the horizontal well of the open hole in Tahe Oilfield, it is considered that common stuck-pipe accidents mainly include the accidental stuck-in drill pipe stuck by the open-hole wall and the slippage of individual large blocks in the open- Card stuck accident, grit stuck pipe accident, casing keyway stuck accident and open-hole packer stuck accident five categories. Some experiences have been initially accumulated in the actual field treatment of multiple wells. For example, the method of acid leaching is used to deal with the stuck pipe caused by collapse of open-hole wall, Activity card solution way to deal with open-hole packer stuck accident, etc., in the horizontal hole of the naked eye to deal with accidental drilling workover work has achieved good results.