入井前，带班队长或司钻要用合适的测量规核实扶正器、扩眼器、钻头，确保尺寸合适。
The Toolpusher or Senior Driller shall verify all stabilisers, reamers and bits will be gauged with appropriate ring gauge to ensure proper size before running in the hole.
对后烟井前墙包复鳍片管结构突变处进行定性力学分析，针对性地提出相应措施及制造、安装时注意事项。
Qualitative mechanical analysis was made for special structure of back pass front wall, and relevant measures and notices for manufacturing and erection are presented.
防止修井井喷需要修井前对井喷风险进行评价，针对不同风险井区采用不同修井措施。
Preventing blowout needs risk evaluation for workover blowout before operation, we could make different measurements due to risk evaluation in different oilfield.
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