- fluted drill collar
- утяжелённая бурильная труба (со спиральной канавкой на поверхности для снижения возможности прилипания к стенкам ствола скважины)* * *утяжеленная бурильная труба
Англо-русский словарь нефтегазовой промышленности. 2011.
Англо-русский словарь нефтегазовой промышленности. 2011.
Drill bit — For the fictional character, see Drill Bit (Transformers). For the cancelled skyscraper nicknamed Drill bit, see Chicago Spire. For the types used in drilling wells, see Well drilling. From top to bottom: Spade, lip and spur (brad point), masonry … Wikipedia
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