Drill bit realizing axial impact function by using turbine and gear

• Main Authors: WANG JIE, TIAN JIALIN, LIU GANG, WEN FENG, DENG ZHE, LIU YADI, YANG YINGLIN
• Format: Patent
• Language: Chinese; English
• Published: 03.07.2020
• 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 relates to a drill bit realizing an axial impact function by using a turbine and a gear. The drill bit comprises an upper joint, a turbine assembly, a gear reducer, an impact assembly and an anti-impact drill bit assembly. The front end of the impact assembly is connected with the anti-impact drill bit assembly, and the rear end of the impact assembly is connected with the gear reducer, and the gear reducer is driven by the turbine assembly. When high-pressure drilling fluid enters an internal channel of the upper joint, the drilling fluid drives the turbine to rotate at a high speed, and after passing through the gear reducer, the turbine is decelerated to the frequency suitable for the vibration and impact of an impact cylinder. Through the cooperation of a pin and a sliding way of the impact cylinder, the impact cylinder is lifted and a spring is compressed. When the pin moves to an upper limiting position of the sliding way of the impact cylinder, the pin slides to the bottom end of the impa