Rig GFC-120 is a kind of self moving reverse circulation rotary rigs. It is mainly used to drill side foundation holes and small water wells. The characteristics, main technical data, structure and performance principles were introduced.
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张西坤,宋秋锋,杨杰,等. GFC-120型自走式反循环钻机的研制[J].钻探工程,2005,32(12):35-37.ZHANG Xi-kun, SONG Qiu-feng, YANG Jie, et al. Development of Self Moving Reverse Circulation Rig GFC-120[J]. Drilling Engineering, 2005,32(12):35-37.