起下钻之前,检查泥浆罐液面、流量计和记录仪,并调整确定所有的报警功能。
Before trips, examine Pit Level and Flow Rate Instruments and Recorders and ActuateAlarms to determine that all are functioning.
起下钻之前,检查泥浆罐液面、流量计和记录仪,并调整确定所有的报警功能。
Before trips, examine Pit Level and Flow Rate Instruments and Recorders and ActuateAlarms to determine that all are functioning.
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