Fracture-mechanics analysis of the breakdown process in minifracture or leakoff test

Emmanuel M Detournay, Roberto Carbonell

Research output: Contribution to journalArticlepeer-review

85 Scopus citations


The breakdown pressure - the peak pressure that is reached during pressurization of the wellbore - is interpreted in this paper to correspond to a condition of unstable crack propagation. It is shown that the classical Hubbert and Willis14 and Haimson and Fairhurst9 breakdown criteria represent a condition of fracture initiation in the limiting case of fast and slow pressurization rate, respectively; and that the breakdown pressure, pb, could be either equal to or larger than the fracture-initiation pressure, pi.

Original languageEnglish (US)
Pages (from-to)195-199
Number of pages5
JournalSPE Production and Facilities
Issue number3
StatePublished - Aug 1997

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