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 the power system, and the outer cylinder part and the inner cylinder part can do relative rotation motion along the middle cylinder part; an arc-shaped groove is formed in the outer barrel part, the power system is fixed in the middle barrel part, one end of a hydraulic cylinder in the power system is matched with the groove, and the other end of the hydraulic cylinder in the power system is connected with the sleeve locking and connecting device; when the outer cylinder part and the middle cylinder part rotate relatively, the hydraulic cylinder is compressed to provide power to drive the casing pipe locking and connecting device to automatically lock and loosen the casing pipe, automatic locking and unlocking of t