...目前的旋转导向钻井 系统的井下工具系统,根据导向方式可划分为两种:推靠钻头式(Push the Bit)和指向钻头式(Point the Bit)。工作机理都是靠偏置机构(Bias Units)分别偏置钻头或钻柱,产生导向。
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指向式技术方案:•推靠式(push the bit) •指向式(point the bit) 指向式推靠式推靠式和指向式旋转导向工具钻井轨迹的质量对比推靠式和指向式旋转导向工具钻井轨迹的质量对比 旋转导向机构( G...
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point-the-bit 摆动钻头
The first games, preparations were a little bit not on point, but as the tournament progressed, everything was coming together,".
VOA: standard.2009.10.12
Our temperature probably fluctuates during the day a little bit anyways, it's not very accurate. And similarly, the boiling point, defining that at a 100 degrees Celsius well that depends on the pressure.
这就不太精确,我们的体温一天之中,会有高低的变化,这一定义不够精确,类似的,我们把水的沸点定义为。
self y Notice what I also do here, I create self dot y, give it a value, and then, oh cool, I can also set up what's the radius and angle for this point, by just doing a little bit of work.
我创建了,然后给它赋值,然后,噢太酷了,通过做一点额外的工作,就可以得到点的半径和角度了,好,实际上如果。
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