The basic structure and the specification of downhole tractor are shown in this paper, also, the logging techniques are summarized.
文章介绍了水平井拖拉器的基本结构及性能指标；
The basic structure and the specification of downhole tractor are shown in this paper, also, the logging techniques are summarized.
文章介绍了水平井拖拉器的基本结构及性能指标；
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