random drilling model 随机钻井模式
Based on the multivariable random drilling model, the multi objective reliability optimization of deep well drilling parameters is presented.
在多元随机钻井模式理论的基础上，提出了深井钻井参数多目标可靠性优化方法。
These examples are not isolated cases, and it has been argued that oil may better be found by random drilling than by the appliance of scientific principles.
上述事例并非是独一无二的，它说明寻找石油可能的较好方法是随机钻探，而不是应用科学原理。
The results show that the vibration of drilling strings will produce the fluctuation of weight on bits by random excitation, so the bit life and drilling rate are affected largely.
结果表明，在地层随机激励作用下，钻柱的振动将会引起钻压的波动，从而影响钻头的寿命及其钻进的速度。
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