Petroleum Overburden Pressure Calculator
Integrate actual depth-dependent overburden density and independent top stress, not single-fluid hydrostaticρgh or inferred geologic density log. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.
Description
Vertical overburden stress integrates bulk density over depth and includes the stress already present at the top of the recorded interval.
Vertical overburden stress integrates bulk density over depth and includes the stress already present at the top of the recorded interval.1
This calculator uses a depth-dependent density profile and explicit gravity rather than a single assumed density.
When to use Petroleum Overburden Pressure Calculator
Use this tool when you need to calculate the stated measurement summary or conditional model from matched observations. Prepare completed matched measurements, SI or explicitly stated oilfield units, and independent evidence for the selected branch or calibration.
How to use Petroleum Overburden 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 observedOverburdenDepthsM, observedMatchedBulkDensityKgM3, callerGravityMSecond2, callerIndependentlyEstablishedTopStressPa, following the field table and calculation rules below, then run the tool.
- Read integratedObservedVerticalStressPa. 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 |
|---|---|---|---|
| observedOverburdenDepthsM | Observed overburden depths m | list of number | Required |
| observedMatchedBulkDensityKgM3 | Observed matched bulk density kg m3 | list of number | Required |
| callerGravityMSecond2 | Caller gravity m second2 | number | Required |
| callerIndependentlyEstablishedTopStressPa | Caller independently established top stress pa; pressure or stress in pascals, with the sign convention described above. | number | Required |
Require at least two strictly increasing nonnegative depths with aligned positive bulk densities, positive gravity, and nonnegative top stress. Trapezoidally integrate density between the recorded depths, multiply by gravity, and add top stress. The top boundary is the first sample, not automatically depth zero.
stressPa=topStressPa+g×ΣΔdepth×(density_i+density_(i+1))/2 Read these symbols with the field meanings and branch or reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| integratedObservedVerticalStressPa | Integrated observed vertical stress pa; pressure or stress in pascals, with the sign convention described above. | number |
{
"input": {
"observedOverburdenDepthsM": [
0,
1,
3
],
"observedMatchedBulkDensityKgM3": [
2,
4,
4
],
"callerGravityMSecond2": 10,
"callerIndependentlyEstablishedTopStressPa": 5
},
"output": {
"integratedObservedVerticalStressPa": 115
}
}Limitations and assumptions
Measurements, unit conventions, branch identity, and model applicability must be independently established. The result does not infer a complete reservoir or flow model, operational settings, or a reserve classification.
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 Reservoir Pressure Average Calculator: Reservoir pressure observations must share a datum before pooling across patches. This calculator applies supplied pressure corrections and weights the corrected pressures by measured pore volumes. For a complementary step, use Petroleum Pore Pressure Prediction Calculator: The Eaton sonic relation estimates a pressure term from observed and normal sonic transit times under a supplied exponent. This calculator uses that particular ratio convention and independent reference pressures rather than certifying pore pressure.
References
-
Petroleum Overburden Pressure Calculator — tool.io
Similar or alternative tools
- Petroleum Reservoir Pressure Average Calculator
Reservoir pressure observations must share a datum before pooling across patches. This calculator applies supplied pressure corrections and weights the corrected pressures by measured pore volumes.
- Petroleum Pore Pressure Prediction Calculator
The Eaton sonic relation estimates a pressure term from observed and normal sonic transit times under a supplied exponent. This calculator uses that particular ratio convention and independent reference pressures rather than certifying pore pressure.