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Hydraulic oscillator

A technology of hydraulic oscillator and pressure pulse, which is applied to vibration drilling, vibration generating device, wellbore/well components, etc. Poor high temperature resistance, improving high temperature resistance and wear resistance, and avoiding serious wear and erosion

Pending Publication Date: 2022-04-05
SINOPEC SSC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the power mechanism of the hydraulic oscillator is driven by a screw motor, and the throttle valve disc generally adopts a flat contact plate valve structure, which makes the existing hydraulic oscillator have limited high temperature resistance and wear of the throttle valve disc mechanism. severe erosion problem

Method used

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  • Hydraulic oscillator
  • Hydraulic oscillator
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Embodiment Construction

[0053] Below will combine the appended in the embodiment of the present invention Figure 1-7 , clearly and completely describe the technical solutions in the embodiments of the present invention. The present invention can be implemented in many different forms, and is not limited to the embodiments described in this embodiment. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of the present invention, wherein the words indicating orientation such as below are only for the positions of the structures shown in the corresponding drawings.

[0054] It should be understood that the terminology used herein is only used to describe specific embodiments, not to limit the present invention. As used herein, the singular forms "a" and "" are intended to include the plural unless the context clearly dictates otherwise. Further, when used in this specification, the terms "comprising" and / or "comprisi...

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Abstract

The invention discloses a hydraulic oscillator which comprises a shell, a piston assembly, a pressure pulse assembly and a turbine assembly. The piston assembly is installed in the shell in a sliding and sealing mode in the axial direction of the shell. The pressure pulse assembly is installed in the shell and located below the piston assembly. The turbine assembly is fixed to the inner wall of the shell and is in transmission connection with the pressure pulse assembly. When the turbine assembly drives the pressure pulse assembly to rotate, the telescopic end of the pressure pulse assembly can stretch out and draw back in a conical throttling hole formed in the inner wall of the shell, and a first through hole and a second through hole which are communicated with an inner cavity of the shell are formed in the piston assembly and the pressure pulse assembly respectively. The turbine assembly is adopted as a power mechanism, the problem of poor high-temperature resistance caused by driving of a screw motor is avoided, and pressure pulse waves are generated by changing the overflowing area by changing the position of pressure pulse stretching into the conical throttling hole at the telescopic end; and the problem of serious abrasion and erosion caused by the adoption of a plane contact type plate valve structure is solved.

Description

technical field [0001] The invention relates to the technical fields of oil and gas exploration, geological exploration and geothermal well development, in particular to a hydraulic oscillator. Background technique [0002] According to calculations, the deep shale gas resources in my country with a burial depth of 3500m to 4500m are huge. Increasing the length of the horizontal section in the shale reservoir is one of the effective ways to improve the development efficiency of deep shale gas. However, with the increase and extension of the length of the horizontal section, the friction and torque during the drilling process also increase, resulting in difficulties in the implementation of the drilling process, a decrease in the transmission efficiency of drilling parameters, and an extension of the drilling cycle. [0003] Therefore, the hydraulic oscillator has been widely used as a tool for reducing friction and drag in horizontal wells with long horizontal sections. At ...

Claims

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Application Information

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IPC IPC(8): E21B28/00E21B7/04E21B7/24
Inventor 兰凯甘心孔华李光泉李帮民晁文学
Owner SINOPEC SSC
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