Finite element analysis of tubular ovality in oil well

Tasneem Pervez*, Sayyad Zahid Qamar

*Corresponding author for this work

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

9 Citations (Scopus)


This paper presents the finite element analysis of tubular expansion in oval bore holes such as those frequently observed in Upper Natih reservoirs. The minimum inner diameter of the expanded tubular must be larger than the drift diameter set by American Petroleum Institute (API) standards. If the minimum inner diameter is smaller than drift diameter, completion equipments can not be run successfully, which is necessary to complete an oil-well for production. The phenomenon of tubular ovality has been previously unknown to petroleum industry. Finite element model of tubular expansion in oval bore-holes is developed to determine the tubular ovality and compared with measured ovality. It was found that ovality increases linearly with tubular expansion ratio. With increase in expansion ratio, the tubular contact length with formation and developed contact pressure increases. Tubular ovality, if not considered in well design, may lead to premature tubular failure due to lower collapse rating and higher stresses.

Original languageEnglish
Title of host publicationAdvances in Materials and Processing Technologies II, AMPT 2009
Number of pages6
Publication statusPublished - 2011
EventInternational Conference on Advances in Materials and Processing Technologies, AMPT 2009 - , Malaysia
Duration: Oct 26 2009Oct 29 2009

Publication series

NameAdvanced Materials Research
ISSN (Print)1022-6680


OtherInternational Conference on Advances in Materials and Processing Technologies, AMPT 2009


  • Finite element analysis
  • Tubular expansion
  • Tubular ovality
  • Zonal isolation

ASJC Scopus subject areas

  • Engineering(all)


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