Drill bit used in diamond drilling coring process

• Main Authors: LIU ZEJUN, TANG JUNPING, HOU JIN, ZHANG GUANGZE, LIU YI, ZHANG MIN, WANG DONG, CHEN MINGHAO, LUO LIANGCHENG, CHANG XINGWANG, LI CANGHAI, HUANG HONG, DENG RUI, OUYANG JI, QIANG XINGANG, CHEN BING, SEO JEONG-SEON
• Format: Patent
• Language: Chinese; English
• Published: 02.04.2024
• 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 a drill bit used in a diamond drilling coring process, and relates to the field of coring drills.The drill bit comprises a tubular body and a cutting part, the cutting part is arranged at the axial end of the tubular body and is annular, multiple sets of cutting teeth are arranged at the axial end of the cutting part in a surrounding array mode, and each cutting tooth is composed of inner drilling teeth and outer drilling teeth, the outer drilling teeth are arranged on the radial outward sides of the inner drilling teeth; the outer drilling teeth and the inner drilling teeth are arranged in the same rotating direction, a first composite sheet is arranged at the head of each inner drilling tooth, a second composite sheet is arranged at the head of each outer drilling tooth, the first composite sheets and the second composite sheets are circular sheets, hydraulic motors are connected to the axis positions of the circular sheets, and the hydraulic motors are fixed in the inner drilling te