Hydraulic oscillator for well drilling

A hydraulic oscillator and oscillator technology, applied in the direction of drilling with vibration, can solve the problems of large friction resistance of drilling tools, affecting the speed of drilling tools and decompression of drilling tools, and achieve the effect of reducing friction resistance and improving drilling efficiency.

Inactive Publication Date: 2014-04-02
SHANDONG LUHAI GASOLINEEUM EQUIP
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a hydraulic oscillator for drilling to solve the problems in the prior art that the friction of the drilling tool is large, which affects the speed of the drilling tool and the problem of depressurization of the drilling tool

Method used

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  • Hydraulic oscillator for well drilling
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Embodiment Construction

[0014] A hydraulic oscillator for drilling, including an axial oscillator mechanism and a power assembly. The axial oscillator mechanism includes a joint 1, a disc spring 2, a housing 3 and a piston 4. The joint 1 is set on the rear of the housing 3, and the disc The spring 2 is clamped between the housing 3 and the joint 1, the piston 4 is arranged at the front end of the housing 3, and the power assembly includes an upper joint 5, a stator 6, a rotor 7, an upper valve plate 8, a lower valve plate 9 and a lower joint 10 , the rotor 7 is arranged inside the stator 6 and can rotate in the stator 6, one end of the stator 6 is connected with the axial oscillator mechanism through the upper joint 5, the other end of the stator 6 is connected with the drilling tool through the lower joint 10, and the upper valve plate 8 is connected with the rotor 7 are connected, the lower valve plate 9 is fixedly connected inside the stator 6 below the upper valve plate 8, an eccentric hole 81 is ...

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Abstract

The invention relates to the technical field of well drilling tools and discloses a hydraulic oscillator for well drilling. The hydraulic oscillator comprises an axial oscillator mechanism and a power assembly, the axial oscillator mechanism comprises a joint, a disc spring, a shell and a piston, the joint is mounted on the rear portion of the shell in a sleeve manner, the disc spring is connected between the shell and the joint in a clamped manner, the piston is arranged at the front end of the shell, the power assembly comprises an upper joint, a stator, a rotor, an upper valve piece, a lower valve piece and a lower joint, the rotor is arranged inside the stator and can rotate in the stator, one end of the stator is connected with the axial oscillator mechanism through the upper joint while the other end of the same is connected with a drilling tool through the lower joint, the upper valve piece is connected with the rotor, the lower valve piece is fixedly connected inside the stator below the upper valve piece, an eccentric hole is arranged on the upper valve piece, and a central hole is arranged on the lower valve piece. In the process of horizontal well drilling, the hydraulic oscillator can generate certain oscillating frequency, so that effect of reducing friction resistance of the drilling tool in the process of horizontal well drilling and improving working efficiency in well drilling is realized.

Description

technical field [0001] The invention relates to the technical field of drilling tools, in particular to a hydraulic oscillator for drilling. Background technique [0002] At present, oil field drilling has gradually developed from the original directional wells to horizontal wells. Due to the pressure of the drilling tools, the drilling tools are close to the lower side well wall during the horizontal drilling process, resulting in excessive friction of the drilling tools during the drilling process. , Seriously affect the drilling, and even cause the drill tool to depressurize and cannot be pressurized to the drill bit. 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. The study found that when the drilling tool passes through the mud, the mud pressure can change, which will cause the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/24
Inventor 刘忠怀王春秀邱振胜冯婷婷赵志刚肖署光
Owner SHANDONG LUHAI GASOLINEEUM EQUIP
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