1)shirttail rig,钻到规定深度后立即移位的钻机2)authorized total depth,规定钻井深度3)rig spotting,钻机定位4)self-erection rig,自立的钻机5)big-shift directional drilling,大位移定向钻孔6)rated drilling depth,额定钻深
用法和例句
The method of cement slurry injection through big-shift directional drilling and its technological parameters used in Gaoyang Iron Ore Mine to seal underground water rushing are introduced.