Hydraulic simple harmonic oscillator for well drilling

A simple harmonic oscillation and drilling technology, which is applied in the field of hydraulic simple harmonic oscillator for drilling and drilling speed-increasing devices, can solve problems such as stuck pipe, easy damage, and poor efficiency of drilling tools, so as to increase drilling speed, improve frictional resistance, The effect of excellent and fast drilling

Inactive Publication Date: 2015-03-11
缪宏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to design a hydraulic simple harmonic oscillator for drilling that can reduce the frictional resistance of the borehole wall and improve the rock breaking efficiency in view of the problems of poor efficiency, easy damage and sticking of the existing drilling tools

Method used

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  • Hydraulic simple harmonic oscillator for well drilling
  • Hydraulic simple harmonic oscillator for well drilling

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Such as Figure 1-2 shown.

[0023] A hydraulic simple harmonic oscillator for drilling, which is mainly composed of an elastic nipple 1, a power assembly 2, and a bottom assembly 4. Threads are processed at both ends of the bottom assembly 4, threads are processed at both ends of the power housing 21, and the vibration The lower end of the shell 12 is threaded; the upper end of the bottom assembly 4 is threadedly connected with the power shell 21, and the lower end is threaded with the drill bit; the upper end of the power shell 21 is threaded with the lower end of the vibrating shell 12; the elastic short joint 1 is mainly composed of the vibrating shell 12 and the mandrel 11 installed in the vibrating shell 12 that can generate axial simple harmonic vibration, the mandrel is put into the vibrating shell and can slide up and down in the sh...

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Abstract

The invention discloses a hydraulic simple harmonic oscillator for well drilling. The hydraulic simple harmonic oscillator consists of a power assembly, a valve assembly, a bottom assembly and an elastic short section, wherein the elastic short section is connected with the power assembly; a spiral blade is connected with a valve block; a fixed valve is mounted on the bottom assembly; a power shell is connected with the bottom assembly. Well drilling liquid drives the spiral blade to rotate, and the spiral blade drives the valve block to rotate, so that circulating holes of the valve block and the fixed valve are staggered to modulate simple harmonic pressure waves; the pressure waves are upwards transmitted to the elastic short section part to drive the power shell to generate continuous simple harmonic oscillation in the axial direction; therefore the friction between a drilling column and the well wall is effectively improved, and the drilling speed is increased. Oscillation impact force is downwards transmitted to a drilling head for jetting, so that rock breaking pressure is periodically changed, and rocks can be effectively broken. The hydraulic simple harmonic oscillator has the characteristics of simple structure, convenience in operation, safety, reliability, low pressure drop, high adaptability, no influence on the drill structure and the like and has an important significance in increasing the drilling speed and lowering the cost.

Description

technical field [0001] The invention relates to a supporting device for oil and natural gas drilling, in particular to a drilling speed-increasing device capable of reducing well wall frictional resistance and improving rock-breaking efficiency, specifically a hydraulic simple harmonic oscillator for drilling. Background technique [0002] As we all know, during the drilling process, the method of rock breaking is an important factor affecting the drilling speed, and the drilling process will be seriously affected if the drilling is blocked or stuck. As the current wellbore becomes more and more irregular, the extended-reach drilling mode faces greater challenges. Reducing friction, reducing sticking accidents in conventional drilling, increasing dynamic drilling pressure, and improving the efficiency of conventional drilling are problems that need to be solved urgently in current drilling projects. Field practice shows that applying appropriate periodic axial vibration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/24
CPCE21B7/24
Inventor 缪宏梅庆张瑞宏郑再象孙娟张剑峰金亦富李永波
Owner 缪宏
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