Til hovedinnhold

Forskningsinstituttene SINTEF Materialer og kjemi og SINTEF Petroleum har med virkning fra 1. januar 2018 slått seg sammen og heter nå SINTEF Industri.

Preventing Shale Instability (PSI)

Preventing Shale Instability (PSI)

The semi-analytical model PSI (Preventing Shale Instability) analysis time dependent borehole stability in shale and sandstone formations.

The model incorporates through approximate expressions:

  • linear elasticity w/ tensile and brittle shear failure + plasticity + strength anisotropy
  • shale-fluid interaction through osmosis + ionic exchange
  • time evolution of stability limits due to chemical and thermal effects plus pore pressure diffusion

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