Turbine-powered double-acting hydraulic oscillating drag-reducing drilling tool

A double-acting, dynamic technology, applied in the direction of vibration drilling, etc., can solve the problems of drilling string support pressure, affecting drilling speed, unable to apply ideal drilling pressure, etc., to prolong service life, reduce total tool length, and reduce contact area Effect

Inactive Publication Date: 2017-11-14
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during the drilling process, the underpinning phenomenon of the drill string is serious, which makes it impossible to apply the ideal WOB and seriously affects the drilling speed

Method used

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  • Turbine-powered double-acting hydraulic oscillating drag-reducing drilling tool
  • Turbine-powered double-acting hydraulic oscillating drag-reducing drilling tool
  • Turbine-powered double-acting hydraulic oscillating drag-reducing drilling tool

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Embodiment Construction

[0023] Below in conjunction with embodiment and its Figure 1-4 The present invention is described in further detail. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0024] Such as Figure 1-4 as shown, figure 1 It is a structural schematic diagram of the turbine-powered double-acting hydraulic oscillation drag-reducing drilling tool of the present invention, Figure 2 to Figure 4 for figure 1 Three partial enlargements of .

[0025] A turbine-powered double-acting hydraulic oscillating drag-reducing drilling tool, comprising a power joint housing 7, a main shaft 8, a slide valve 17, a support seat 15, a vibrating shaft 1, and a vibrating joint housing 23, the main shaft 8 is arranged in the power joint housing 7, The turbine rotor 11 is fixedly installed on the main shaft 8, and the turbine stator 6 is arranged at the position corresponding to the turbine rotor 11 of the power joint housing 7;...

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Abstract

The invention discloses a turbine power type double-action hydraulic oscillating-drag-reduced drilling jig. The drilling jig comprises a power segment shell, a main shaft, a letdown valve, a supporting seat, a vibrating shaft and a vibration segment shell, wherein a turbine rotor is arranged on the main shaft, and a turbine stator is arranged on the power segment shell; the supporting seat is connected to one end of the power segment shell, and the vibration segment shell is connected to the other end of the power segment shell; one end of the vibrating shaft is clamped at the outer side of the end part of the power segment shell, the other end of the vibrating shaft is located in the vibration segment shell, the end located in the vibration segment shell is in sliding fit with the internal chamber wall of the vibration segment shell, and the vibrating shaft is further provided with an elastic member which enables the vibrating shaft to vibrate; one end, facing to the supporting seat, of the main shaft is connected with a turning valve, and the turning valve is in relative sliding fit with the main shaft along the axial direction of the main shaft; the letdown valve is supported in the power segment shell through the supporting seat, the turning valve and the letdown valve have end faces which are oppositely abutted, and eccentric holes are formed in the opposite end faces of the turning valve and the letdown valve. The turbine power type double-action hydraulic oscillating-drag-reduced drilling jig is of an all-metal structure and can be used in a high-temperature environment.

Description

technical field [0001] The invention relates to a hydraulic vibration drag reduction drilling tool, in particular to a turbine-powered double-acting hydraulic vibration drag reduction drilling tool with small flow rate and small inner diameter. Background technique [0002] In the prior art, in the case of small wellbore, large curvature or long horizontal well section, the ineffective transmission of WOB is an important factor affecting the rate of penetration. In this well section, the borehole wall is subjected to greater pressure from the drill string, and the friction between the drill string and the borehole wall increases accordingly. Therefore, during the drilling process, the underpinning phenomenon of the drill string is serious, resulting in the inability to apply the ideal WOB, which seriously affects the drilling speed. When the friction between the drill string and the borehole wall is large enough, it is easy to cause the drill string to twist and deform and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/24
CPCE21B7/24
Inventor 王瑜邹俊刘宝林夏柏如王志乔周琴孔令镕张皓王立广张玉超
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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