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MiniRes

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A simple petroleum reservoir simulator using TPFA (two-point flux approximation). Documentation.

  • Small: all of its physics fit in core.py's 400 lines of code.
  • Capable: two-phase, slight compressibility, BHP control, well paths, irregular outlines and faults (inactive cells), aquifers – but 2D uniform grid, immiscible, isothermal, and simple well models and operation.
  • Adjoint model included; verified against finite differences.
  • Python: PyPI (pip install minires), or demo it in a web browser via Open In Colab (backend: Google) or marimo (no backend!).
  • Fast: similar to JutulDarcy's (but no JIT startup/wait) at equal accuracy on 2D two-phase cases of size $100$ – $10^5$.
  • Reliable: reproduces the numbers of the Matlab code (2007) from NTNU/Sintef by Jørg E. Aarnes, Tore Gimse, and Knut–Andreas Lie. Further validated against Buckley–Leverett's analytic solution, ECLIPSE's numbers on the Egg model and JutulDarcy's on quarter five-spot, SPE-10, and Egg.
  • Tested extensively: GitHub CI, with many examples doubling as regression tests.

The Egg model: permeability, pressure, oil saturation, and the adjoint sensitivity of a producer's water cut

Used by

Please let me know (or make a PR) if you use this in your work, and I will add it to this list.

Contributions

To also get the examples and tests, clone instead, and install with uv, in editable mode:

git clone https://github.com/patnr/MiniRes.git
cd MiniRes
uv sync  # or: pip install -e .
uv run pytest
uv run ruff check

Release files for minires 0.3.2

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Source distribution (sdist)

Source distribution for minires 0.3.2
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Table of built distributions (wheels) for minires 0.3.2
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minires-0.3.2-py3-none-any.whl Python 3 none any Details

Total release size: 131.3 kB

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0.3.2 This release

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0.3.1

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0.3.0

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