Long spiral drilling tool and rotary drilling rig

• Main Authors: WANG YINGHE, ZHANG MINGJIE, QIU HONGCHEN, GONG WENBING, SU CHEN
• Format: Patent
• Language: Chinese; English
• Published: 22.08.2023
• 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 utility model discloses a long spiral drilling tool and a rotary drilling rig. The long spiral drilling tool comprises a spiral drilling rod and a spiral drilling bit, the spiral drill rod comprises a first central pipe, and spiral blades are arranged on the outer wall of the first central pipe; one end of the first central pipe is provided with a male joint, and the other end is provided with a female joint; the spiral drill bit comprises a second central pipe, and spiral blades are arranged on the outer wall of the second central pipe; a cutter is arranged at one end of the second central pipe, and the other end of the second central pipe is connected with the female connector or the male connector at one end of the first central pipe through the male connector or the female connector. According to the utility model, under the condition that the height of the rotary drilling rig is not changed, the hole-forming depth can be increased, the use of an extension bar of the long spiral drilling rod is reduce