History

This package was developed internally at Equinor starting in 2017 based on several internal codes in Python and other languages. Open sourced (LGPLv3) in 2019.

Release notes

Detailed release history (with minor releases) at

v0.8.x

New features

  • New saturation endpoint for gas condensate modelling sgro, and reintroduced kromax endpoint when sgro > 0.

  • sgrw can be used as an alias for sorw, relevant for gas-water problems with condensate.

  • Pyscal is now type hinted.

Changes

  • The internal dataframes now have their column names upper cased. This is not part of the public API.

  • Deprecated API for monotonicity specification has been removed

  • Deprecated interpolation code has been removed.

  • Individual interpolation parameters pr SATNUM can no longer be given to the command line tool.

Fixes

  • Pyscallists had some initialization bugs that are now fixed for API users.

  • Avoid bug when initializing from tabulated values with linear curves.

v0.7.x

New features

  • Monotonocity is always enforced (in the last digit) in relative permeability data, unless fast mode is activated.

  • swl can be initialized from height-above-free-water-level, if simple J parameters are included in input table.

  • swcr can be initialized relative to swl, by using the swcr_add parameter in the input table.

  • PyscalFactory can create objects with fast mode enabled.

Deprecations

  • Dropped Python2 support.

  • SATNUM specific interpolation parameters are deprecated in the command line client.

v0.6.0

Changes

  • In previous versions, the oil relperm curve in WaterOil started with kro(swcr) = kroend. Now it starts with kro(swl) = kroend. Thus, if swcr > swl, your oil relperm will change when moving to Pyscal 0.6.x.

  • In previous versions, the oil relperm curve in GasOil started with kro(sgcr) = kroend. Now it starts with kro(0) = kroend. Thus, if sgcr > 0 (more common than swcr > swl), your oil relperm will change when moving to Pyscal 0.6.x. The oil relative permeability will in general be lowered through this change, and the change can be significant for large sgcr.

Deprecations

  • kromax is no longer in use by pyscal. The oil relperm curve is anchored at kroend (and krowend and krogend are renamed to kroend accordingly, as they cannot be different any longer)

New features

  • Support for GasWater.

v0.5.0

New features

  • Adds saturation points between sorw and 1 in WaterOil saturation tables.

v0.4.0

New features

  • Added command line tool

v0.3.0

Improvements

  • Rewritten interpolation code

v0.2.0

New features

  • Includes PyscalFactory for creating objects.

v0.1.0

Miscellaneous

  • first open source version