A novel magnetically-levitated flywheel energy storage alternative to lithium-ion battery packs for oilfield service

Ahmed Saeed, Alan Palazzolo, Shehab Ahmed

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

1 Citation (Scopus)

Abstract

In this study, a novel concept for a downhole flywheel energy storage module to be embedded in a bottom-hole-assembly (BHA) is presented and modeled, as an alternative power source to existing lithium-ion battery packs currently deployed in drilling operations. Lithium-ion batteries disadvantages include deteriorated performance in high temperature, limited lifetime that necessitates frequent replacement which elevates operation costs, and environmental hazards associated with its proper disposal. Extreme and harsh F and 20 kpsi, respectively, as well as violent vibrations encountered during drilling. Moreover, the flywheel module should adhere to the geometric constraints of the wellbore and the BHA in which it is embedded. A five-axis magnetic levitation control system was designed and tuned to maintain continuous suspension of the flywheel under the harsh lateral, axial and torsional drilling vibrations of the BHA. This necessitated complete identification and modeling of the drillstring dynamics and the sources of vibrations excitation that include stick-slip, bit-bounce, and whirling. Thus, an integrated finite element model was developed that included the rotordynamic behavior of the flywheel and the BHA, the component dynamics of the magnetic levitation control system, and the drillbit cutting dynamics. The model also included a newly developed model for coupling between lateral, axial and torsional vibrations. It was demonstrated through numerical simulations that the active magnetic bearings (AMB) successfully maintain continuous flywheel suspension due to all different types of external vibration as well as its own lateral vibration due to mass imbalance.

Original languageEnglish
Title of host publicationASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
Pages525-534
Number of pages10
EditionPARTS A AND B
DOIs
Publication statusPublished - 1 Dec 2012
EventASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 - Houston, TX, United States
Duration: 9 Nov 201215 Nov 2012

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
NumberPARTS A AND B
Volume4

Other

OtherASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
CountryUnited States
CityHouston, TX
Period9/11/1215/11/12

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Keywords

  • Active magnetic bearing (AMB)
  • Bottom-hole-assembly (BHA)
  • Downhole flywheel
  • Drillbit cutting dynamics
  • Drillstring vibrations

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Saeed, A., Palazzolo, A., & Ahmed, S. (2012). A novel magnetically-levitated flywheel energy storage alternative to lithium-ion battery packs for oilfield service. In ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 (PARTS A AND B ed., pp. 525-534). (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 4, No. PARTS A AND B). https://doi.org/10.1115/IMECE2012-85658