Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A system and method for suppressing stick-slip vibration of drill pipe based on active disturbance rejection method

A stick-slip vibration and self-disturbance rejection technology, which is applied to the automatic control system of drilling, the program control in the sequence/logic controller, drilling equipment, etc., can solve the problem of complicated hardware connection, unstable system operation and unsatisfactory realization effect And other issues

Active Publication Date: 2016-08-24
NORTHWESTERN POLYTECHNICAL UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system solves the problems of complex hardware connection, unstable system operation and unsatisfactory realization effect in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A system and method for suppressing stick-slip vibration of drill pipe based on active disturbance rejection method
  • A system and method for suppressing stick-slip vibration of drill pipe based on active disturbance rejection method
  • A system and method for suppressing stick-slip vibration of drill pipe based on active disturbance rejection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0059] Such as figure 1 Shown, the system of suppressing the stick-slip vibration of the drill pipe based on the active disturbance rejection method of the present invention includes:

[0060] The controlled object includes the gearbox connected to the driving motor, and the drill pipe and drilling tool assembly driven by the gearbox to realize oil drilling; the frequency converter includes the PLC control system, which controls the start, stop and The working state of the speed regulation, and set the main given speed of the motor, the frequency converter will feed back the current state of the driving motor to the control unit; the control unit, including the active disturbance rejection controller, is used to control and adjust the current state of the driving motor, Suppress the torque oscillation and speed oscillation of the drill pipe ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a system and method for suppressing the stick-slip vibration of a drill pipe based on an active disturbance rejection method, including: 1) The frequency converter provides the main given speed of the motor through the PLC control system, transmits it to the controlled object, and obtains the actual speed of the motor ; 2) The frequency converter transmits the actual speed of the motor to the control unit; 3) At the same time, the human-computer interaction device transmits the structure information of the drill pipe and drilling tool assembly to the control unit; 4) The control unit transmits the actual speed of the motor and the drill pipe and Optimize the structure information of the drill tool assembly to obtain the optimal speed of the auxiliary setting, and use the maximum speed to limit the optimal speed of the auxiliary setting; 5) The control unit transmits the limited optimal speed of the auxiliary setting to the frequency conversion through the CAN bus The controller is superimposed with the main given speed of the motor, and the superimposed speed controls the speed of the driving motor. This method can estimate the system disturbance and display the actual speed and torque of the motor in real time, so as to achieve the purpose of suppressing the stick-slip vibration of the drill pipe.

Description

technical field [0001] The invention belongs to the technical fields of oil drilling, geological exploration and the like, and relates to a system and method for suppressing stick-slip vibration of a drill pipe based on an active disturbance rejection method, a bus communication technology and a human-computer interaction technology. Background technique [0002] Due to the complex formation and uncertain drill pipe movement during oil drilling, drill pipe vibration is prone to occur, including lateral vibration, axial vibration and stick-slip vibration of the drill pipe. Among them, the stick-slip vibration is the torque oscillation caused by the frictional moment between the drill bit and the formation. The speed of the drill bit may stop or rotate, and the instantaneous speed is very large, which may easily cause the performance deterioration of the drill pipe and the drill bit; this phenomenon not only affects the drilling efficiency but also threatens the drilling effici...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05E21B44/04
Inventor 章莉敏李江红崔丽娜侯媛媛刘科峰
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com