Geology Geomechanics Reservoir Compaction Calculator
Declared small-strain reservoir thickness×uniaxial compaction coefficient×actual depletion; actual stress path and effective-pressure applicability independently established. Signed expansion retained, not subsidence geometry or geomechanical safety.
Description
Small-strain reservoir compaction relates thickness to calibrated compressibility and pressure depletion.
Small-strain reservoir compaction relates thickness to calibrated compressibility and pressure depletion.1
The model's signed strain is constrained to the declared small-strain branch. Use this tool to calculate the stated observation or conditional model from supplied measurements.
When to use Geology Geomechanics Reservoir Compaction 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 Reservoir Compaction Calculator and understand its results
- Establish the sample and coordinate basis, matching units, calibration source and applicable model assumptions.
- Enter actualOriginalReservoirThicknessMeters, callerIndependentlyCalibratedUniaxialCompactionPerPascal, actualPressureDepletionPascals, using the field meanings and rules below, then run the tool.
- Read result.conditionalSmallStrainCompactionMeters. 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 |
|---|---|---|---|
| actualOriginalReservoirThicknessMeters | Actual original reservoir thickness meters | number | Required |
| callerIndependentlyCalibratedUniaxialCompactionPerPascal | Caller independently calibrated uniaxial compaction per pascal | number | Required |
| actualPressureDepletionPascals | Actual pressure depletion pascals | number | Required |
Require positive original thickness and uniaxial compaction coefficient per pascal, with finite signed pressure depletion. Require abs(coefficient×depletion)≤0.1, allowing the boundary. Multiply thickness by signed strain; negative depletion returns negative compaction. No nonlinear compaction, subsidence geometry or coefficient fitting is performed.
strain=coefficientPerPa×pressureDepletionPa; compactionMeters=originalThicknessMeters×strain, abs(strain)≤0.1 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.conditionalSmallStrainCompactionMeters | Conditional Small Strain Compaction Meters; use the units, sign convention and calculation stated above | number |
{
"input": {
"actualOriginalReservoirThicknessMeters": 10,
"callerIndependentlyCalibratedUniaxialCompactionPerPascal": 0.01,
"actualPressureDepletionPascals": 2
},
"output": {
"result": {
"conditionalSmallStrainCompactionMeters": 0.2
}
}
}Limitations and assumptions
The model's signed strain is constrained to the declared small-strain branch. 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 Wellbore Stability Mud Weight Window Calculator to examine a related aspect: A wellbore mud-weight window belongs to an independently established mechanical analysis.
Use Geology Geomechanics Unconfined Compressive Strength UCS Calculator where its separate inputs and scope apply: Unconfined compressive stress divides a qualifying failure force by original specimen area.
References
Similar or alternative tools
- Geology Geomechanics Wellbore Stability Mud Weight Window Calculator
A wellbore mud-weight window belongs to an independently established mechanical analysis.
- Geology Geomechanics Unconfined Compressive Strength UCS Calculator
Unconfined compressive stress divides a qualifying failure force by original specimen area.