您要查找的是不是：
- The operation performance of PDC bits with screw drill tool appplied now in oilfield were analyzed comprehensively. 综合分析了目前使用的PDC钻头和螺杆钻具工作特性。
- This paper analyses how the whipstocking screw drill tools easily trip in casing. 因此，结构弯角必然较大，这就提出了这种钻具在套管内能否顺利下入的问题。
- Keywords screw drill tool;cardan shaft;design;application; 螺杆钻具;万向轴;设计;应用;
- Keywords navigational drilling screw drill tool cardan shaft rotary force analysis offset; 导向钻井;螺杆钻具;万向轴;旋转;受力分析;偏移距;
- Keywords horizontal well;curvity;radius;screw drill tool;classification structure;feature; 水平井;曲率;半径;螺杆钻具;分类;结构;特征;
- Keywords navigational drilling;screw drill tool;life;power shaft;prime mover;fatigue failure;drilling accident;technical reform; 导向钻井;螺杆钻具;寿命;传动轴;原动机;疲劳破坏;钻井事故;技术改造;
- Design of CAT System for Screw Drilling Tools and Screw Drilling Motors 螺杆钻具、螺杆泵性能计算机辅助测试系统的设计
- screw drilling tool 螺杆钻具
- screw drill tool 螺杆钻具
- The drilling tool should be measured precisely. 请准确丈量钻具。
- Get all the drilling tools unlashed. 解开所有钻具。
- A drilling tool. 钻子一种钻凿用工具
- The time-domain response model of flaw long screw drill and pour pile was established based on the damped wave equation of pile-soil interaction system. 从桩-土系统共同作用的波动阻尼方程入手,建立了成层土中缺陷长螺旋钻孔灌注桩的时域响应模型。
- The working principle of the controllable eccentralizer rotary steerable drilling tool is presented. 摘要介绍了所研制的可控偏心器旋转导向钻井工具的工作原理。
- These two days we have been laying down drill tools. 这两天我们都在甩钻具。
- The extracting method of on-line wear character signal of drilling tool is studied. 研究了钻削过程中刀具在线磨损状态特征信号+的提取方法。
- After modification of the drilling tool, the thrust borings were successfully done at both locations. 针对已挖掘出的洞已经启动了意外应对计划。
- With reference to the experiment results,the DTH hammer concentric simultaneous casing drilling tool is considered to have extensive applicati... 结合实验结果,认为潜孔锤同心跟管钻具在卵砾石地层中具有广阔的应用前景。
- CASTON has experts from Xuanhua machinery plant with superiority on down-the-hole drilling tool and anchorage drill pipe. 凯司通公司拥有多名原宣化采掘机械厂的专家和工程技术人员，在潜孔、锚固钻杆生产方面具有无可替代的优势。
- By the action of high roatry speed,excentric shaft connection intensifies the fatigue failure of drill tool. 为了达到较好的防斜目的,必须增大钻进时钻头的转速,在高转速的作用下,偏轴接头加剧了钻具先期疲劳失效。
