Petroleum Dew Point Pressure Calculator
Extract actual independently identified DewLiquid onset at explicit measured phase-fraction criterion, preserve all/no crossings, no inferred composition-specific equilibrium EOS or pressure operating limit. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.
Description
A dew-liquid onset observation is tied to composition, temperature, and an explicitly chosen measured phase-fraction criterion.
A dew-liquid onset observation is tied to composition, temperature, and an explicitly chosen measured phase-fraction criterion.1
This tool locates crossings in a supplied pressure/phase-fraction trace rather than solving an equilibrium equation of state.
When to use Petroleum Dew Point Pressure Calculator
Use this tool when you need to locate all observed criterion crossings on a matched measurement branch. Prepare completed matched measurements, SI or explicitly stated oilfield units, and independent evidence for the selected branch or calibration.
How to use Petroleum Dew Point Pressure Calculator and understand its results
- Prepare completed matched measurements, SI or explicitly stated oilfield units, and independent evidence for the selected branch or calibration.
- Enter observedDewLiquidTestPressuresPa, observedDewLiquidPhaseFractions, callerDewLiquidOnsetPhaseFraction, following the field table and calculation rules below, then run the tool.
- Read observedPhaseOnsetPressureCrossingsPa. For result objects, inspect the nested output fields below, including any missing evidence or selected indices.
- Correct any input issues and run again. Before using a successful result, review its units, signs, evidence coverage, and stated model or reference assumptions.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedDewLiquidTestPressuresPa | Observed dew liquid test pressures pa; pressure or stress in pascals, with the sign convention described above. | list of number | Required |
| observedDewLiquidPhaseFractions | Observed dew liquid phase fractions | list of number | Required |
| callerDewLiquidOnsetPhaseFraction | Caller dew liquid onset phase fraction | number | Required |
Require positive increasing test pressures, aligned phase fractions in [0,1], and an onset criterion in [0,1]. Apply the all-crossings helper and retain all observed or interpolated pressures, including an empty result or sampled criterion plateau. The phase identity and equilibrium context must be established independently.
Require at least two nonempty aligned finite coordinate/response samples with coordinates strictly increasing. Record every exact sample hit and interpolate adjacent strict sign changes around the criterion; preserve coordinate order and remove adjacent duplicate crossings. No crossing returns an empty list, and an exact-level plateau retains its sampled coordinates. Responses need not be monotone unless the particular tool additionally requires it. No unique preferred crossing is selected.
crossing=x_i+(x_(i+1)−x_i)×(criterion−y_i)/(y_(i+1)−y_i) for strict sign changes Read these symbols with the field meanings and branch or reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| observedPhaseOnsetPressureCrossingsPa | Observed phase onset pressure crossings pa; pressure or stress in pascals, with the sign convention described above. | list of number |
{
"input": {
"observedDewLiquidTestPressuresPa": [
1,
2,
3
],
"observedDewLiquidPhaseFractions": [
0.4,
0.2,
0
],
"callerDewLiquidOnsetPhaseFraction": 0.1
},
"output": {
"observedPhaseOnsetPressureCrossingsPa": [
2.5
]
}
}Limitations and assumptions
The criterion, phase or indicator identity, and observation regime are independently established inputs. A recorded crossing does not prescribe a test, establish an operating limit, or identify a unique physical transition beyond this measured branch.
Missing required fields, unknown fields, wrong types, and violated calculation rules return input issues. Numeric values must be finite; nonfinite numeric outputs are rejected. Arrays must be dense, with no missing cells. Numeric lists allow at most 10000 entries, subject to smaller tool-specific bounds above.
Alternative or Complementary methods
For a related task, use Petroleum Bubble Point Pressure Calculator: A bubble-gas onset observation is tied to composition, temperature, and an explicitly chosen measured phase-fraction criterion. This tool locates crossings in a supplied pressure/phase-fraction trace rather than solving an equilibrium equation of state. For a complementary step, use Petroleum Solution Gas Oil Ratio Bubble Point Calculator: Solution gas-oil ratio at the bubble point concerns gas released from the same oil parcel at specified stock conditions. This audit pools only independently confirmed bubble-point parcels and keeps unassessed parcel counts separate.
References
-
Petroleum Dew Point Pressure Calculator — tool.io
Similar or alternative tools
- Petroleum Bubble Point Pressure Calculator
A bubble-gas onset observation is tied to composition, temperature, and an explicitly chosen measured phase-fraction criterion. This tool locates crossings in a supplied pressure/phase-fraction trace rather than solving an equilibrium equation of state.
- Petroleum Solution Gas Oil Ratio Bubble Point Calculator
Solution gas-oil ratio at the bubble point concerns gas released from the same oil parcel at specified stock conditions. This audit pools only independently confirmed bubble-point parcels and keeps unassessed parcel counts separate.