Description
poreVolume = bulkVolume*porosity; waterVolume = waterMass/waterDensity; saturation = waterVolume/poreVolume.
Rock and sediment material properties depend on pore, fluid, solid and bulk-volume bases. A porosity or saturation ratio assumes compatible masses, densities and measurement conditions; it does not validate those assumptions.
poreVolume = bulkVolume*porosity; waterVolume = waterMass/waterDensity; saturation = waterVolume/poreVolume.
When to use this tool
Use Earth Sample Water Saturation Pore Volume Term when checking a supplied material-volume or composition balance.
How to use the tool and how it works
- Enter bulkVolume, porosity, waterMass, waterDensity. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read poreVolume, waterVolume, saturation. Use the output convention below.
Require positive bulkVolume and waterDensity, porosity in (0,1] and nonnegative waterMass. poreVolume = bulkVolume*porosity; waterVolume = waterMass/waterDensity; saturation = waterVolume/poreVolume.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| bulkVolume | Bulk Volume | Required. Finite number; strictly above 0. |
| porosity | Porosity | Required. Finite number; maximum 1; strictly above 0. |
| waterMass | Water Mass | Required. Finite number; minimum 0. |
| waterDensity | Water Density | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| poreVolume | Pore Volume | Required. Finite number. |
| waterVolume | Water Volume | Required. Finite number. |
| saturation | Saturation | Required. Finite number. |
{
"input": {
"bulkVolume": 100,
"porosity": 0.2,
"waterMass": 10,
"waterDensity": 1
},
"output": {
"poreVolume": 20,
"waterVolume": 10,
"saturation": 0.5
}
}Limitations and assumptions
- Use coherent volume and mass/density units. Saturation can exceed one because water volume is not capped; no drainage state, pore connectivity or material consistency is verified.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use appropriate specimen methods and complete material models for physical interpretation, uncertainty and practical engineering use.
References
Similar or alternative tools
- Rock Sample Buoyancy Corrected Volume Term
bulkVolume = (saturatedMass-submergedApparentMass)/density; accessiblePoreVolume = (saturatedMass-dryMass)/density; accessiblePorosity is their ratio.
- Mineral Volume Mass Fraction Crosswalk
mixtureDensity is the volume-weighted density sum; firstMassFraction = firstVolumeFraction*firstDensity/mixtureDensity.