MTZ77S绳索取心冲击回转钻具
THE STUDY OE MTZ77S WIRELINE CORING PERCUSSION ROTATION DRILLIG TOOL
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摘要: 介绍了钻具的结构、工作原理、技术规格、性能指标和使用效果。Abstract: It introdnial the stricure, operation princuple, techni al specifications, performance index and operating results of MTZ77S wireline coring percussion rotation drilling tool.