Circumferential vibrating tool

Abstract

The invention discloses a circumferential vibrating tool. The vibrating tool comprises a vibrating sleeve and a drill bit connector arranged at the bottom of the vibrating sleeve and inserted into the vibrating sleeve. The vibrating sleeve comprises a sleeve mouth and a sleeve body, three modules including the reset control module, the commutation control module and the circumferential vibrating module are sequentially arranged in the sleeve body from the sleeve mouth to the drill bit connector. According to the circumferential vibrating tool, high-pressure drilling fluid is directly converted into circumferential stable high-frequency low-amplitude impacting vibration, generated vibration directly acts on a PDC drill bit, and the effect that the stick-slip vibration phenomenon is effectively reduced or eliminated is achieved; the whole structure of the circumferential vibrating tool adopts modularization thought design, the three modules including reset control, commutation control and circumferential vibrating are relatively independent and can collaboratively work from structural design to functionalizing, tool machining is facilitated, and reliability of tool working can be remarkably improved; and meanwhile, the requirement of on-site rapid assembly is met, and later-period maintenance is facilitated.

Description

technical field [0001] The invention relates to a downhole auxiliary speed-increasing tool for improving the drilling speed and borehole quality of a PDC bit of an oil and gas well during the exploration and development of oil and natural gas, in particular to a circumferential vibration tool. Background technique [0002] In recent years, in the field of petroleum and natural gas exploration and development, with the increasing proportion of deep wells and ultra-deep wells, due to the increase in hardness and plasticity of rocks in deep formations, the drilling speed of roller cone bits is low and the drilling cycle is long. In order to increase the drilling speed of the drill bit stroke, PDC drill bits are widely used. However, stick-slip vibrations will occur during the drilling of PDC bits in deep formations, which seriously restricts the further improvement of the ROP of PDC bits and greatly affects their service life. Theoretical research and field practice have shown...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a circular vibrating tool, which is used for auxiliary speed-up of a PDC drill bit, and it solves the problems in the prior art, such as lack of drilling brake, component wear, and easy failure of some sealing surfaces, which affect the service life of the tool and the speed-up effect.

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