“地”在电法测井中的作用

On the Role of "Ground" in Electrical Logging

电路中的"地",就是电流环路中人为定义的"零电位"参考点,在复杂的测井仪器电路中,这样的参考点往往不止一个,且性质各不相同,不能同等看待。在现场测井及仪器的组合、仪器检修等环节,应当重视对仪器各电流工作环路"地"的分析,保障各类测井仪器的正常、正确使用。

The ＂ground＂ of circuit refers to artificial reference point of zero potential in current loop. In complex circuit of logging instruments, there are more than one referent points which have different properties and are not treated in the same way. In the course of field logging and combination and maintenance of instruments, it is necessary to pay attention to analyzing ＂ground＂ of each current working loop in the instruments to ensure regular and proper use of all kinds of logging instruments.