Oscillating device for underground hydraulic oscillator

Abstract

The invention relates to an oscillating device, in particular to an oscillating device for an underground hydraulic oscillator. The device is composed of an oscillating short nipple, wherein the oscillating short nipple is composed of an outer tube body, a spline sleeve, an oscillating short nipple joint, a jet element, a cylinder sleeve, a piston rod, an oscillating piston, a spline shaft, a rotating sleeve, an oscillating disc and a cylinder cover; the oscillating short nipple joint is installed at one end of the outer tube body through the spline sleeve in a threaded mode, and the jet element is arranged in the outer tube body; the piston rod is arranged at the position, on one side of the jet element, in the outer tube body through the cylinder sleeve and the cylinder cover; one end ofthe piston rod is provided with the oscillating piston through a fixing nut, and the other end of the piston rod extends to the outer end of the cylinder cover. The oscillating short nipple is simplein structure, convenient to install, small in radial size and good in horizontal well drilling stability, the problem of pressure supporting can be effectively avoided, hydraulic axial vibration canbe achieved, the friction resistance in the operation of a horizontal well can be effectively reduced, and the operation efficiency of the horizontal well is improved. The device is particularly suitable for being used in long, large-inclination and multi-branch horizontal wells and the like.

Description

technical field [0001] The invention relates to an oscillating device, in particular to an oscillating device used for a downhole hydraulic oscillator. Background technique [0002] In recent years, with the deepening of exploration technology in major oilfields, the complexity of oil well body structure has gradually increased, and the number of long horizontal, highly deviated and multi-branch horizontal wells has increased and other issues have put forward new realistic requirements for drilling engineering. The development space and demand of tools such as hydraulic oscillators have been improved. How to increase the length of the horizontal section of the horizontal well and realize rapid drilling has become the focus of relevant research in the petroleum industry. The complex wellbore structure not only puts higher requirements on the drilling technology and methods, but also the large inclination angle significantly increases the frictional resistance between the oil...

AI Technical Summary

Problems solved by technology

The complex wellbore structure not only puts higher requirements on drilling technology and methods, but also increases the frictional resistance between the oil drill string and the wellbore significantly due to the large well inclination, which reduces the transmission efficiency of drilling weight. Affected ROP

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