判断题 MWD现场应用中，经常使用的“OTF”值指的是Offset of ToolFace。

判断题 只有在必要时才进行起下钻。这句话正确的英文翻译是：Up and down trips are made only if they are necessary.

判断题 When a well is drilled off to one side it is called a “directional well”.这句话的中文意思是：当一口井朝一个方向钻井时，就叫定向井。