An Oscillator Using Turbine and Porous Channel to Realize Vortex-Induced Vibration

Abstract

The invention relates to an oscillator capable of achieving vortex induced vibration by means of a turbine and a porous flow channel. The oscillator is composed of a turbine assembly, an oscillation pipe nipple and a transition joint. The front end of the oscillation pipe nipple is connected with an impact joint, the rear end of the oscillation pipe nipple is connected with the turbine assembly, hydraulic energy is converted into mechanical energy of a turbine shaft by means of the turbine assembly, a flow channel rotary switch is connected with the turbine shaft through screw threads, a drilling fluid flow channel is changed, fluid flows into the oscillation pipe nipple in a cyclic variation manner, and therefore the pressure of the drilling fluid is cyclically varied, the oscillation pipe nipple generates axial impact in certain frequency, during the rotating and rock breaking process of a drill bit, axial vibration is applied to the drill bit, and therefore the rock breaking efficiency of the drill bit is improved. With respect to the oscillator capable of achieving vortex induced vibration by means of the turbine and the porous flow channel, by means of the cyclic variation of the drilling fluid flow channel, an axial impact force in certain frequency is generated, the oscillator is simple in structure, does not contain electronic components and rubber components and can adapt to the stratum well, and the drilling efficiency is effectively improved.

Description

technical field [0001] The invention relates to an oscillator which uses a turbine and a porous flow channel to realize vortex-induced vibration in the fields of petroleum drilling, geological drilling, cementing and coiled tubing. Background technique [0002] With the continuous development of the economy, the demand for oil and gas is increasing, while the shallow oil and gas resources in my country are becoming more and more exhausted. The oil and gas development technology continues to improve, the depth of oil and gas wells increases, and the number of deep and ultra-deep wells increases. The formation working environment faced by the drilling project is more complicated, and the drilling depth continues to increase, and the hardness and strength of the rock will increase significantly under the confining pressure of the bottom layer, resulting in low rock breaking efficiency of the drill bit. When the drill bit is drilling into the deep well formation, the drilling sp...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an oscillator that makes the turbine rotate and change the flow channel to generate vibration by liquid flow, so as to solve the problems of low rock-breaking efficiency and low ROP of the drill bit in deep wells and ultra-deep wells, and can also speed up the cementing speed and use. in coiled tubing

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