钻井施工中，确定一个合理的气体迟到时间、岩屑迟到时间以及准确识别真假新钻地层岩屑至关重要。
In the drilling operation, it is important for determining a rational gas lag time and cutting lag time and for identifying newly drilled cutting accurately.
迟到时间必须准，岩屑和深度才能一致。
The lag time should be accurate so as to ensure cutting consistent with depth.
迟到时间必须准，岩屑和深度才能一致。
The lag time should be accurate so as to ensure cutting consistent with depth.
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