Tubular expansion in irregularly shaped boreholes - Computer simulation and field measurement

Tasneem Pervez, S. Z. Qamar, S. A. Al-Hiddabi, F. K. Al-Jahwari, F. Marketz, S. Al-Houqani, M. V D Velden

Research output: Contribution to journalArticle

8 Citations (Scopus)


Recently, field engineers have tried to use a new technique using expandable tubular with elastomers to seal the annulus. Ultrasonic down-hole measurements carried out for evaluation of zonal isolation revealed that the tubular expanded to an oval x-section instead of the desired circular x-section at certain locations. This is a phenomenon previously unknown. It is believed to occur due to expansion in irregularly shaped boreholes. The ovalization of expanded tubular was studied to avoid such problems in future. The finite element method was used to predict tubular ovality and compare it to measured values. Results were then used to develop ready-to-use design curves in making decisions for running a completion tool in expanded tubular.

Original languageEnglish
Pages (from-to)735-744
Number of pages10
JournalPetroleum Science and Technology
Issue number7
Publication statusPublished - Jan 2011


  • finite element analysis
  • irregular boreholes
  • ovality
  • tubular expansion

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Chemical Engineering(all)
  • Chemistry(all)
  • Geotechnical Engineering and Engineering Geology

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