Developed study on the numerical bit, well bottom and the borehole face modeling method for PDC bit numerical experiment system.
开展了PD C钻头数值实验系统中数值钻头、数值井底以及数值井壁的建模方法研究。
The result shows that the borehole destruction occurs in the dynamic process of coal face advancing, and it is more stable when the borehole location is close to tailgate.
认为钻孔的破坏是随着工作面推进而发生的动态过程，布置在靠近回风巷侧钻孔更加稳定。
A distance that characterizes how far a logging tool measures into the formation from the face of the tool or the borehole wall.
表征测井仪器可以测量的从井壁(或仪器表面)到地层的探测距离。
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