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在油井建设和生产作业中，钻井深度是最重要的技术参数之一。本文通过对随钻头或其它机械结构入井的钢丝长度的计量，来完成这一参数的测量。
Drilling depth is one of the most important technical parameters in well construction and production operations. This article by measuring the length of wire with the drill bit or other mechanical structure to complete this measurement.