As one of radial horizontal drilling techniques, high pressure waterjetdrilling technology is capable of using mechanical or waterjet apparatus to make a cavity at the selected coal seam.
Waterjet flow is one of the decisive factors for drilling rate during rock bit drilling.
在牙轮钻头的钻进中，水射流是钻进速度快慢的决定因素之一。
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Ultra-high pressure waterjet assisted mechanical drilling is known as one of the advanced and promising technology to increase drilling rate for deep oil and gas wells.