Automatic driver and rotary drilling rig

• Main Authors: ZHANG MINGJIE, XU CHANGLI, QIU HONGCHEN, XUE LIANGFENG, HAN ZHEN, FAN QIANGSHENG, SONG JIAN
• Format: Patent
• Language: Chinese; English
• Published: 14.05.2024
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention discloses an automatic driver and a rotary drilling rig, the driver comprises an outer cylinder part, a middle cylinder part, an inner cylinder part, a lower cylinder part, a power system, a sleeve locking device arranged on the lower cylinder part and a hydraulic cylinder arranged on...