共 50 条
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- [35] CORRECT APPROACH CUTS ROAD CORE DRILLING COSTS BY 50%. Industrial Diamond Review, 1974, : 172 - 173
- [36] STEERABLE SYSTEM CUTS STRAIGHT HOLE DRILLING COSTS 50%. Petroleum Engineer International, 1988, 60 (05): : 48 - 51
- [37] Batch drilling program cuts time, costs for Liuhua development Oil and Gas Journal, 1996, 94 (33):