Laser-mechanical drill bit for laser-mechanical combined efficient rock breaking

Abstract

The invention relates to a laser-mechanical drill bit for laser-mechanical combined efficient rock breaking. The laser-mechanical drill bit is mainly composed of a drill bit body and a fixed cutting structure; the fixed cutting structure is composed of blades extending from the drill bit body, cutting teeth and gauge protection teeth; the cutting teeth and the gauge protection teeth are fixedly connected to the blades; the blades and the drill bit body are integrally machined and formed; a through dovetail-groove-shaped laser channel is formed in the drill bit body; two symmetrical bosses and four inclined threaded holes are formed in the connecting end; and an annular sealing groove is formed, so that gas leakage can be effectively prevented, and the cleaning and rock-carrying effects in the drilling process are guaranteed. According to the drill bit, the positioning precision of a laser beam can be ensured, the shaped linear laser beam is enabled to accurately irradiate a specified position on the surface of rock, the laser beam rotationally irradiates the rock along with the drill bit, the laser beam is ensured not to interfere with the interior of the drill bit in the drilling process, and laser-mechanical combined efficient rock breaking is realized.

Description

Technical field: [0001] The invention relates to the field of drilling engineering equipment, in particular to a laser-mechanical drill bit for combined laser-mechanical and efficient rock breaking. Background technique: [0002] With the further development of the national economy, the demand for oil and gas resources continues to increase. Due to long-term exploitation, the proven shallow oil and gas resources in some areas have been fully exploited, so the development of deep oil and gas resources has become a necessity. the trend of. However, in the development process of deep wells and ultra-deep wells, due to the dense formation, high hardness and strong abrasiveness, traditional mechanical drilling methods have low drilling speed, short drill bit life, long drilling cycle and high production costs, which greatly hinder the development and utilization of deep oil and gas resources. Therefore, it is of great significance to study the method of efficiently crushing hard...

AI Technical Summary

Problems solved by technology

However, in the development process of deep wells and ultra-deep wells, due to the dense formation, high hardness and strong abrasiveness, traditional mechanical drilling methods have low drilling speed, short drill bit life, long drilling cycle and high production costs, which greatly hinder the development and utilization of deep oil and gas resources. Therefore, it is of great significance to study the method of efficiently breaking hard rock

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