CHANGELOG

2.2.1

2026-01-16

  • Fixed UnboundLocalError bug when performing multiplication in an empty array.

2.2.0

2025-12-23

  • Add category slip coefficient (default unit: m3/Pa.s).

  • Add category fluid mobility (default unit: s/m2).

  • Add category and quantity type time per per area (s/m2).

2.1.0

2025-09-17

  • Added new unit: “Kelvin per atm” (K/atm).

  • Added support for Python 3.13.

  • Dropped support for Python 3.8 (EOL).

2.0.1 (2024-02-15)

  • Added support for Python 3.11 and 3.12.

  • Dropped support for EOL Python 3.6 and 3.7.

  • Add categorie and quantity type henry solubility coefficient (mol/m3.Pa)

  • Add categorie and quantity type crystallization kinetic rate (mol/m2.s.Pa)

1.19.0 (2023-08-10)

  • Define the category and quantity type density derivative in respect to enthalpy``(default unit: ``kg2/m3.J).

1.18.0 (2023-06-01)

  • Define categories forchheimer linear productivity index and forchheimer linear productivity index.

  • Define quantity types forchheimer linear productivity index and forchheimer quadratic productivity index.

  • Add units to categories forchheimer linear productivity index and forchheimer quadratic productivity index.

1.17.0 (2023-05-02)

  • Standardize the usage of lbmol

  • Add more valid units for mole per mass category

1.16.0 (2023-04-26)

  • Add more units for mole per mass quantity.

  • Define a molality category.

1.15.0 (2023-04-03)

  • Add cubic meter per day per kilogram-force per square centimeter (m3/d/kgf/cm2) unit to productivity index category.

  • Add gauge pressures units Pa(g), kPa(g), bar(g), and kgf/cm2(g) to pressure category.

1.14.1 (2022-11-03)

  • Add mole per mass quantity (mol/kg).

1.13.0 (2021-11-30)

  • Update Newton second per meter unit from Ns/m to N.s/m to get unit display consistent with other units in the same category (support for the old unit input added).

  • Add force per velocity squared quantity (N.s2/m2, lbf.s2/ft2, lbf.s2/in2, kgf.s2/m2).

1.12.0 (2021-11-08)

  • barril is now fully type annotated, being tested with mypy.

  • Array and FixedArray are Generic subclasses, parametrized by the container type.

1.11.1 (2021-10-08)

  • Fixed typos in unit names: kilkodynes (unit=kdyne) fixed to kilodynes, killowatts/cubic metre degree Kelvin (unit=kW/m3.K) fixed to kilowatts/cubic metre degree Kelvin.

1.11.0 (2021-06-18)

  • Add new unit: “Stokes” (St).

  • Use TypeCheckingSupport from oop-ext 1.1.

  • Add cubic feet per day per psi (ft3/psi.d) unit to productivity index category.

  • Add calories/metre hour degree Celsius (cal/m.h.degC) unit to thermal conductivity category.

  • Add calorie/hour square metre deg C (cal/h.m2.degC) unit to heat transfer coefficient category.

  • Add std cubic metres/second (sm3/s) unit to standard volume per time category.

  • Add million std cubic feet/stock tank barrel (MMscf/stb), stock tank barrel/std cubic feet (stb/scf) and stock tank barrel/million std cubic feet (stb/MMscf) units to standard volume per standard volume category.

1.10.0 (2020-10-22)

  • Removing thermodynamic temperature as default category for degF and degR units.

1.9.0 (2020-02-20)

  • New classmethod Array.FromScalars that creates an Array from a List[Scalar].

  • Add new unit: “barrel per second” (bbl/s).

1.8.0 (2020-01-10)

  • Add new category: “standard volume per standard volume”.

  • Move unit sm3/sm3 from “volume per volume” to “standard volume per standard volume”.

1.7.2 (2019-10-16)

  • _foundation has been renamed to _util, and a lot of functions which were not being used anymore have been removed.

  • Add new unit category mass temperature per mol (kg.K/mol).

  • Some units have been renamed as they were deemed out-of-place in the oil industry to something more usual (for example, 1000ft3/d became Mcf/d). The old representation of those units is still supported, but they will be automatically translated during Quantity creation, so this change should not affect users much.

  • Fix division 1.0 / a where a is a Scalar or Array and also add support for floor division, i.e., operations like a // b where a and b are Scalar or Array (and combinations with float or int).

  • Add new unit category for Joule-Thomson coefficient (K/Pa).

  • Add new temperature unit for density derivative in respect to temperature (kg/m3.K).

1.7.1 (2019-10-03)

  • Fixed bug in / and - operators for FixedArray.

1.7.0 (2019-06-18)

  • Add unit system.

1.6.1 (2019-04-11)

  • Change export to include ICurve and Curve and exclude IReadOnlyScalar.

1.6.0 (2019-04-10)

  • Add curve implementation.

  • Add support to interfaces from oop-ext.

  • Drop support to Python 2.

1.5.0 (2019-01-09)

  • Quantity.CheckValue now raises QuantityValidationError instead of ValueError.

1.4.0 (2018-12-17)

  • Add new category for “concentration ratio”.

1.3.0 (2018-10-13)

  • Add “per micrometre” unit to “per length” category.

  • Remove internal barril.fixtures module as it is not necessary or part of the public API.

1.2.0 (2018-09-26)

  • Add units for defining Spring-Dashpot movements.

1.1.0 (2018-09-24)

  • Add number and fraction properties to FractionValue.

  • Add unit read-only property to Quantity.

1.0.0 (2018-09-21)

  • First feature release.

0.1.0 (2018-09-03)

  • First release on PyPI.