A kind of oil drilling speed increasing equipment

Abstract

The invention relates to a speed-increasing equipment for petroleum drilling, which belongs to the technical field of petroleum drilling. It includes an upper joint, a shell, a lower joint, a central pipe string, a central flow channel and an injection flow channel. The upper end of the upper joint is threaded with the drill string, and the lower end of the lower joint is threaded with the drill bit. The shell includes a threaded upper shell and The lower casing, the central pipe column is located inside the casing, including an upper central pipe, an injection pipe and a lower central pipe, the upper end of the upper central pipe is threaded with the lower end of the upper joint, and the lower end is threaded with the upper end of the ejection pipe. The lower end of the shoot tube is fixedly connected with the lower central tube. The up and down reciprocating movement of the central pipe string relative to the shell of the present invention can not only effectively prevent the drill bit from being too high or too low to protect the drill bit, but also continuously change the frequency of the pulse jet to improve the rock breaking efficiency. When the drilling pressure is sufficient, the present invention breaks rocks through the pulse jet impact, and when the drilling pressure is insufficient, the particle jet impact and the over-pulse jet impact cooperate to break rocks, so as to ensure continuous and efficient rock breaking.

Description

technical field [0001] The invention relates to a speed-increasing equipment for petroleum drilling, which belongs to the technical field of petroleum drilling. Background technique [0002] In recent years, with the continuous depletion of shallow oil and gas resources in my country, the discovery of oil and gas in deep hard formations and complex geological conditions is an important task for current exploration and development. During the drilling process, the formation hardness and drilling difficulty increase with the increase of the well depth, especially resulting in a sharp decrease in the drilling speed. Improving the drilling speed in hard formations has become one of the world's recognized problems. In the drilling of deep wells and hard rock formations in various oilfields at home and abroad, there are generally problems such as slow drilling speed, short life of drilling tools, long drilling cycle, and high drilling costs, which restrict the overall benefits of ...

AI Technical Summary

Problems solved by technology

[0005] However, particle impact drilling technology is still in its infancy in my country, and there is no mature particle impact acceleration tool, let alone drilling speed acceleration equipment that combines particle impact and pulse jet impact

Images