Underground turbine hydraulic power vibration well cementing device

Abstract

The invention relates to an underground turbine hydraulic power vibration well cementing device which is composed of a turbine mechanical vibration section, a hydraulic power mechanical vibration section and a guiding shoe. The underground turbine hydraulic power vibration well cementing device is characterized in that a support (2), a turbine stator (3), a conventional turbine rotor (4) and an eccentric turbine rotor (5) are located in a turbine section cylinder (1) from top to bottom in sequence; the support (2) and the turbine stator (3) are fixed to the turbine section cylinder (1) through screws (7), and an eccentric sleeve (6) is connected and fixed to the eccentric turbine rotor (5) through a key; a circulation hole (9) is formed in a hydraulic power cylinder (8); the outer ring of a hollow piston (10) is sleeved with a compression spring (11); the upper portion of the hollow piston (10) is restrained by an inner upper step of the hydraulic power cylinder (8), and the lower end of the compression spring (11) is installed on an inner lower step of the hydraulic power cylinder (8). According to the underground turbine hydraulic power vibration well cementing device, ideal radial vibration and axial vibration superposition can be obtained by adjusting the step of a turbine and the size of the hollow piston, so that the amplitude of a mechanical vibration device is adjustable, and the underground turbine hydraulic power vibration well cementing device has the advantages of being simple in structure, low in cost, easy to manufacture, convenient to use and good in application effect.

Description

Technical field: [0001] The invention relates to a downhole turbine hydraulic vibration cementing device, which belongs to the technical field of petroleum drilling tool design. Background technique: [0002] In oil drilling engineering, cementing quality is an important construction quality index. Experiments have proved that the introduction of vibration in the cementing process can improve the strength of cement stone and the displacement efficiency of cement slurry, eliminate air bubbles in cement, shorten the waiting time for setting, and thus improve the quality of cementing. [0003] There are many researches on vibration cementing devices in China, which can be mainly divided into hydraulic pulse vibration devices, mechanical vibration cementing devices, magnetostrictive vibration devices, piezoelectric ceramic vibration devices, audio frequency vibration cementing devices and ground environment. Empty hydraulic or air pulse vibration cementing devices, among which ...

AI Technical Summary

Problems solved by technology

In the existing turbine vibration cementing device, the eccentric block has a single structure and poor controllability, mainly generating radial vibration, while the hydraulic pulse cementing device only generates axial vibration, and the vibration amplitude is mostly uncontrollable

When it comes to obtaining precise vibration effects, current vibration devices still have great limitations

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