Advanced directional drilling, especially rotary steerable systems, provides directional control of wellbore while continuously rotating the drill bit. Downhole propulsion/steering mechanism is one of the key components in rotary closed-loop drilling system. Downhole steering/propulsion mechanisms currently used for directional control include adjustable stabilizer, steerable downhole motor and steering actuators used in state-of-the-art rotary steerable systems. The novel electro-mechanical propulsion and steering mechanisms are introduced, in order to produce downhole weight on bit (WOB) and directional control of the drill bit while rotating it as well. The mechanisms are based on high-reduction ratio planetary gear system and DC motor. This propulsion/steering mechanism introduces a unique rotary steering method with a manner of turning screw inside borehole. As a downhole propulsion/steering mechanism, it can be integrated with an existing MWD system to provide directional control and downhole propulsion force on drill bit.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Downhole Propulsion/Steering Mechanism for Wellbore Trajectory Control in Directional Drilling


    Contributors:
    Liu, Xu-Hui (author) / Liu, Ying-hui (author) / Feng, Ding (author)


    Publication date :

    2013


    Size :

    6 Seiten




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    CONTINUOUS TRAJECTORY CALCULATION FOR DIRECTIONAL DRILLING

    NGUYEN HUNG / SORENSON LOGAN D / WALTER DAVID L et al. | European Patent Office | 2023

    Free access

    WELLBORE DRILLING SYSTEM

    ROODENBURG JOOP / WIJNING DIEDERICK BERNARDUS / HESSELS HENDRIK | European Patent Office | 2016

    Free access

    Wellbore drilling system

    ROODENBURG JOOP / WIJNING DIEDERICK BERNARDUS / HESSELS HENDRIK | European Patent Office | 2017

    Free access

    Downhole tractor for use in a wellbore

    FLECKENSTEIN WILLIAM W / CAMPBELL CHRISTOPHER NORDIN / BELL SEAN H et al. | European Patent Office | 2021

    Free access

    WELLBORE DRILLING SYSTEM

    ROODENBURG JOOP / WIJNING DIEDERICK BERNARDUS / HESSELS HENDRIK | European Patent Office | 2017

    Free access