Application of a new model to analyze leak-off tests

Altun G. , Langlinais J., Bourgoyne A.

SPE DRILLING & COMPLETION, vol.16, no.2, pp.108-116, 2001 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 16 Issue: 2
  • Publication Date: 2001
  • Doi Number: 10.2118/72061-pa
  • Title of Journal : SPE DRILLING & COMPLETION
  • Page Numbers: pp.108-116


A leak-off test (LOT); commonly known as a formation-pressure-integrity lest, is a verification method to estimate the fracture pressure of exposed formations. After cementing each casing string, a LOT is run to verify that the casing seat can withstand the wellbore pressure required to drill safely to the next casing setting depth. Fracture pressure determined from this test is used as the maximum pressure that may be imposed on that formation. Critical drilling decisions for subsequent casing setting depths are based on LOT results.