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。
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。
The rock stratum drilled by a rotary drill is random distributed and complicated, so it is difficult to define the drilling process.
牙轮钻机钻凿的岩层是随机分布、错综复杂的，因而钻进过程难以定义。
The vibration responses of floating drilling vessels in random sea waves are studied in this paper by using the theory of random vibrations.
应用随机振动理论，对浮动式钻井装置在随机海浪作用下的动力响应进行了分析。
The bore sequence of every working face is random to the multi joint rock drilling manipulator, so the bore task planning is very complicated.
多关节凿岩机械手在工作时，完成的是一个在一定工作面上随机的钻孔孔序任务，其孔序规划相当复杂。
The bore sequence of every working face is random to the multi joint rock drilling manipulator, so the bore task planning is very complicated.
多关节凿岩机械手在工作时，完成的是一个在一定工作面上随机的钻孔孔序任务，其孔序规划相当复杂。
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