Stick-slip and whirl motions of drill strings: Numerical and experimental studies

Nicholas Vlajic, Chien Min Liao, Hamad Karki, Balakumar Balachandran

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    5 Scopus citations

    Abstract

    The dynamics of drill strings, which are long structures used in drilling operations, are explored numerically and experimentally within this article. A reduced-order distributed parameter model that allows for coupled bending and torsional motions is presented along with forces that take into account interactions between the drill string and the wellbore. Further, a scaled experimental apparatus is presented along with results. Both experimental results and model predictions show backward whirling. Stick-slip interactions are investigated numerically, and the simulation results are seen to be in good agreement with experimental observations. These results could prove useful when designing control schemes for mitigating undesirable torsional and bending motions.

    Original languageEnglish (US)
    Title of host publicationASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2011
    Pages829-838
    Number of pages10
    EditionPARTS A AND B
    DOIs
    StatePublished - 2011
    EventASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2011 - Washington, DC, United States
    Duration: Aug 28 2011Aug 31 2011

    Publication series

    NameProceedings of the ASME Design Engineering Technical Conference
    NumberPARTS A AND B
    Volume4

    Other

    OtherASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2011
    Country/TerritoryUnited States
    CityWashington, DC
    Period8/28/118/31/11

    All Science Journal Classification (ASJC) codes

    • Modeling and Simulation
    • Mechanical Engineering
    • Computer Science Applications
    • Computer Graphics and Computer-Aided Design

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