1) double drill
双钻
2) double-wall drill tool
双壁钻具
1.
A double-wall drill tool has been developed to solve problems arising in the process of controlling the wellbore trajectory using conventional downhole mud motor and MWD in under-balanced drilling with aerated drilling fluid.
为解决在充气钻井液欠平衡压力钻井时,使用常规井下动力钻具和随钻测量仪器进行井眼轨迹控制中遇到的技术难题,研制了双壁钻具。
3) double-wall drill pipe
双壁钻杆
4) doublefaced drill machine
双面钻床
1.
This paper introduces the design of programmable controller's system in doublefaced drill machine.
介绍全自动双面钻床的可编程电气控制系统的设计 。
5) double bent PDM
双弯钻具
1.
The method and formula of simplifying double bent PDM to equivalent single bent PDM is presented and the integrated equations applied to DKO and DTU are derived and a step equivalent method of simplifying double bent(mutibent) PDM to single bent PDM is provided.
提出了把双弯钻具简化为等效单弯钻具的方法和公式 ,建立了适用于同向、反向双弯的统一表达式 ,并给出了把三弯 (多弯 )钻具简化为单弯钻具的分步等效方法。
6) bicenter bit
双心钻头
1.
When drilling with bicenter bits, several problems have been encountered, such as drilling a smaller- than - expected hole, the instability of bottom hole assembly (BHA), and hole deviation tendencies that make the bit extremely weight sensitive.
针对使用双心钻头钻进时扩孔尺寸不理想、钻具工作不稳定、井斜趋势引起钻头工况对钻压非常敏感等问题,对底部钻具组合的受力、变形和运动状态等方面进行了分析研究表明,由于双心钻头几何设计的独特性,工作时钻头上受有不平衡力,这使得钻头切削不稳定,且影响钻柱变形。
补充资料：古意题徐令壁（一作题著作令壁）
【诗文】：
白云苍梧来。
氛氲万里色。
闻君太平世。
栖泊灵台侧。
【注释】：
【出处】：
全唐诗：卷84_54
白云苍梧来。
氛氲万里色。
闻君太平世。
栖泊灵台侧。
【注释】：
【出处】：
全唐诗：卷84_54
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条