共 50 条
- [1] CORRECT APPROACH CUTS ROAD CORE DRILLING COSTS BY 50%. Industrial Diamond Review, 1974, : 172 - 173
- [3] CORRECT APPROACH CUTS ROAD CORE DRILLING COSTS BY 50 PERCENT INDUSTRIAL DIAMOND REVIEW, 1974, 34 (MAY): : 172 - 173
- [4] STRAIGHT HOLE DRILLING WITH A TURBODRILL JOURNAL OF PETROLEUM TECHNOLOGY, 1977, 29 (APR): : 404 - 404
- [5] Importance of straight hole drilling PROCEEDINGS OF THE TWENTY-FIFTH ANNUAL CONFERENCE ON EXPLOSIVES AND BLASTING TECHNIQUE, VOL II, 1999, : 119 - 124
- [6] PORTABLE TOP DRIVE SYSTEM CUTS TOTAL DRILLING COSTS JOURNAL OF CANADIAN PETROLEUM TECHNOLOGY, 1992, 31 (07): : 5 - 6