Geology Geomechanics Coal Gas Content Langmuir Calculator
Calibrated coal LangmuirgasCONTENTVL P/(PL+P), actual moisture/temperature and gas reference-volume basis required. Not chemistry fractional surface coverage or total free+adsorbed gas.
Description
Langmuir adsorption relates adsorbed gas to a fitted capacity and characteristic pressure.
Langmuir adsorption relates adsorbed gas to a fitted capacity and characteristic pressure.1
It does not include unlisted free or dissolved gas components. Use this tool to calculate the stated observation or conditional model from supplied measurements.
When to use Geology Geomechanics Coal Gas Content Langmuir Calculator
Use this tool to calculate the stated observation or conditional model from supplied measurements. Establish the sample and coordinate basis, matching units, calibration source and applicable model assumptions.
How to use Geology Geomechanics Coal Gas Content Langmuir Calculator and understand its results
- Establish the sample and coordinate basis, matching units, calibration source and applicable model assumptions.
- Enter callerIndependentlyMatchedLangmuirGasCapacityVolumePerMass, callerMatchedLangmuirPressurePascals, actualPressurePascals, using the field meanings and rules below, then run the tool.
- Read result.conditionalCoalAdsorbedGasVolumePerMass. Interpret each field using the units, signs and evidence rules below.
- If input validation fails, correct the reported field and run again. Before applying a successful result, check the stated reference scope, units, assumptions and any retained unknown evidence.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| callerIndependentlyMatchedLangmuirGasCapacityVolumePerMass | Caller independently matched langmuir gas capacity volume per mass | number | Required |
| callerMatchedLangmuirPressurePascals | Caller matched langmuir pressure pascals | number | Required |
| actualPressurePascals | Actual pressure pascals | number | Required |
Require nonnegative matched Langmuir capacity and pressure, and positive Langmuir pressure in pascals. Evaluate capacity×P/(PL+P); zero P returns zero. No free-gas estimate, adsorption fitting or hysteresis model is supplied.
adsorbedGasVolumePerMass=capacity×P/(PL+P) Apply the field units and exact ordering, boundary and evidence rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Structured result containing the calculation or selected reference fields below | object |
| result.conditionalCoalAdsorbedGasVolumePerMass | Conditional Coal Adsorbed Gas Volume Per Mass; use the units, sign convention and calculation stated above | number |
{
"input": {
"callerIndependentlyMatchedLangmuirGasCapacityVolumePerMass": 10,
"callerMatchedLangmuirPressurePascals": 2,
"actualPressurePascals": 2
},
"output": {
"result": {
"conditionalCoalAdsorbedGasVolumePerMass": 5
}
}
}Limitations and assumptions
It does not include unlisted free or dissolved gas components. Results depend on the independently established measurement basis and the exact model assumptions above.
Every listed input requires an explicit value. Unexpected fields, incorrect value types, nonfinite numbers and sparse numeric arrays fail validation; tool-specific bounds and alignment rules apply as described above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful calculation that reports a false comparison or retains unknown evidence.
Alternative or Complementary methods
Use Geology Geomechanics Shale Gas Total Gas Content Calculator to examine a related aspect: Total shale-gas content combines independently resolved gas components on one volume-per-mass basis.
Use Geology Geomechanics Salt Creep Rate Calculator where its separate inputs and scope apply: Salt creep depends on stress and temperature history under a selected constitutive law.
References
Similar or alternative tools
- Geology Geomechanics Shale Gas Total Gas Content Calculator
Total shale-gas content combines independently resolved gas components on one volume-per-mass basis.
- Geology Geomechanics Salt Creep Rate Calculator
Salt creep depends on stress and temperature history under a selected constitutive law.