A Turbine Driven Double Valve Hydraulic Oscillator

Abstract

The invention relates to a turbine-driven double-valve hydraulic oscillator, which belongs to the technical fields of petroleum and natural gas exploitation and drilling tools. The oscillator is composed of a vibration short-circuit assembly and a power short-circuit assembly; the vibration short-circuit assembly and the power short-circuit assembly are connected to each other through threads; the power short-circuit assembly consists of a compression sleeve, a turbine shaft, and a main housing Body, lower joint, shunt ring and shunt sleeve; the upper thread of the main engine casing is equipped with a compression sleeve, and the lower end thread of the main engine casing is equipped with a lower joint; the main engine casing is provided with a turbine shaft, and the upper end of the turbine shaft is threaded. There is an end cover, and an upper righting bearing and a lower righting bearing are arranged on the circumference of the turbine shaft below the end cover; a shunt ring is installed on the circumference of the turbine shaft below the lower righting bearing through a shunt sleeve. The oscillator not only improves the drilling rate, but also reduces energy consumption and prolongs the service life compared with the traditional technology, and is especially suitable for the construction needs of oil and natural gas exploitation and drilling.

Description

technical field [0001] The invention relates to a turbine-driven double-valve hydraulic oscillator, which belongs to the technical fields of petroleum and natural gas exploitation and drilling tools. Background technique [0002] With the development and development of oilfields, shallow oilfields have been basically developed. The number of wells with complex structures such as highly deviated wells, horizontal wells and horizontal lateral wells is increasing, and their drilling efficiency is also getting lower and lower. The biggest obstacle affecting drilling speed during drilling is the frictional resistance generated during drilling. In order to reduce frictional resistance and reduce back pressure and sticking phenomena during sliding drilling. People have found through research that applying appropriate periodic axial vibration to the drilling string can change the static friction force between the drilling tool and the well wall into dynamic friction force, which c...

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Problems solved by technology

[0004] The purpose of the present invention is to: provide a simple structure; can provide normal and stable oscillation force, effectively reduce the frictional resistance of the drilling tool when drilling, improve the mechanical penetration rate; solve the problem that the vibration effect of the prior art is difficult to control and the energy consumption is relatively low. Turbine-driven double-valve hydraulic oscillators with high and short service life issues

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