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Three-dimensional hydraulic oscillator

A hydraulic oscillator, three-dimensional technology, applied in the direction of vibration drilling, vibration generating device, fluid using vibration, etc., can solve the problems of affecting drilling speed, reducing drilling efficiency, sticking drill, etc., to improve drilling efficiency and vibration effect Good, simple structure effect

Active Publication Date: 2018-10-19
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this type of well, there is a large frictional resistance after the pipe string contacts the well wall. When the friction resistance is too large, the pipe string will undergo sinusoidal bending or helical buckling, which will seriously cause pipe sticking, affect the drilling speed, and reduce the drilling efficiency.

Method used

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Embodiment Construction

[0023] This three-dimensional hydraulic vibrator is made up of upper shell 1, lower shell 2, upper joint 3, lower joint 4 and screw rod 5 by it, threaded connection between upper shell 1 and lower shell 2; The center of upper shell 1 The hole is a stepped hole; one end of the upper shell 1 is threaded with an upper joint 3; one end of the lower shell 2 is threaded with a lower joint 4 . The upper rotating shaft 7 is installed through the centralizing bearings 6 arranged symmetrically in the upper casing 1, and the upper rotating shaft 7 between the centralizing bearings 6 is equipped with a turbine group 8; the turbine group 8 includes a rotor and a stator. The lower end of the upper rotating shaft 7 is fixedly equipped with an upper cam 9 , and a lower cam 10 is movably installed in the upper housing 1 below the upper cam 9 . The upper cam 9 and the lower cam 10 are T-shaped respectively, and the upper cam 9 and the lower cam 10 are respectively composed of a cam disc 11 and ...

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Abstract

The invention relates to a three-dimensional hydraulic oscillator, and belongs to the technical field of drilling tools. The three-dimensional hydraulic oscillator is formed by an upper shell, a lowershell, an upper joint, a lower joint and a threaded rod, wherein the upper shell is internally provided with an upper rotating shaft through alignment bearings which are symmetrically arranged; an upper cam is fixedly arranged on the lower end head of the upper rotating shaft; a lower cam is movably arranged in the upper shell below the upper cam; the upper cam and the lower cam are in contact connection; the threaded rod is arranged in the upper shell under the lower cam through a spring; the threaded rod is fixedly connected with the lower cam. During work, a lower rotating shaft drives aneccentric block to rotate, and a radial centrifugal force is generated through rotation of the eccentric block, so that a circumferential oscillation force is generated; the oscillation force is capable of reducing friction of a drilling tool during a rock breaking process of a drilling bit, so that the drilling efficiency can be improved; the problems that larger friction resistance exists afteran existing pipe column is in contact with a well wall, the drilling speed is affected, and the drilling efficiency is reduced are solved; the three-dimensional hydraulic oscillator has positive significances in reducing friction resistance and improving the drilling efficiency.

Description

technical field [0001] The invention relates to a three-dimensional hydraulic oscillator, belonging to the technical field of drilling tools. Background technique [0002] Because horizontal wells, horizontal branch wells, and extended-reach wells can help oil fields increase production, they have been increasingly used in drilling in major oil fields in recent years. In this type of well, there is a large friction resistance after the pipe string contacts the well wall. When the friction resistance is too large, the pipe string will undergo sinusoidal bending or helical buckling, which will seriously cause pipe sticking, affect the drilling speed and reduce the drilling efficiency. [0003] During conventional drilling, there is a state of static friction between the drilling tool assembly and the borehole wall. Whether it is a vertical well, a directional well or a horizontal well, the friction between the drill string and the well wall during the drilling process is an i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/24E21B28/00
CPCE21B7/24E21B28/00B06B1/18E21B31/005E21B7/124
Inventor 冯定王鹏赵钰王哲涂忆柳
Owner YANGTZE UNIVERSITY
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