Cristin-resultat-ID: 1487409
Sist endret: 4. februar 2018, 13:09
NVI-rapporteringsår: 2017
Resultat
Vitenskapelig artikkel
2017

From Fracture Gradient to Spectrum of Lost-circulation Pressures: A Paradigm Shift?

Bidragsytere:
  • Alexandre Lavrov

Tidsskrift

Energy Procedia
ISSN 1876-6102
e-ISSN 1876-6102
NVI-nivå 0

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2017
Publisert online: 2017
Trykket: 2017
Volum: 114
Sider: 3185 - 3192

Importkilder

Scopus-ID: 2-s2.0-85029634869

Beskrivelse Beskrivelse

Tittel

From Fracture Gradient to Spectrum of Lost-circulation Pressures: A Paradigm Shift?

Sammendrag

In a naturally-fractured formation, the maximum mudweight (the lost-circulation pressure gradient) allowed along the interval is distributed between the minimum and maximum in-situ stress gradients. For a vertical wellbore drilled in an extensional stress environment, the spectrum of lost-circulation pressure gradients is dominated by the values close to the maximum (vertical) in-situ stress gradient. For a vertical wellbore drilled in an compressional stress environment, the spectrum of lost-circulation pressure gradients is dominated by the values close to the minimum (vertical) in-situ stress gradient. The minimum required length of the open-hole testing section increases with the length of the interval to be drilled, but there is no clear dependence of the minimum required length on the fracture density.

Bidragsytere

Alexandre Lavrov

  • Tilknyttet:
    Forfatter
    ved Petroleum ved SINTEF AS
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