Petroleum Sweep Efficiency Areal Calculator
Audit actual independently tracer-assessed areal sweep exposure with unavailable whole-inventory bounds, not assumed areal×vertical independence or displacement efficiency. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.
Description
Sweep efficiency describes how much of an exposure inventory was contacted by displacement.
Sweep efficiency describes how much of an exposure inventory was contacted by displacement.1
This areal audit separates assessed contact from unassessed exposure and returns bounds for the complete inventory.
When to use Petroleum Sweep Efficiency Areal 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 Sweep Efficiency Areal 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 observedAssessedArealExposureM2, observedContactedArealExposureM2, observedUnassessedArealExposureM2, following the field table and calculation rules below, then run the tool.
- Read knownSweepFraction, wholeSweepLowerBound, wholeSweepUpperBound. 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 |
|---|---|---|---|
| observedAssessedArealExposureM2 | Observed assessed areal exposure m2 | list of number | Required |
| observedContactedArealExposureM2 | Observed contacted areal exposure m2 | list of number | Required |
| observedUnassessedArealExposureM2 | Observed unassessed areal exposure m2 | list of number | Required |
Require nonempty aligned positive assessed exposures and nonnegative contacted and unassessed exposures in square metres, with contacted≤assessed in each row. Sum assessed K, contacted C, and unassessed U. Return C/K, C/(K+U), and (C+U)/(K+U); these are proportions, not percentages.
known=C/K; lower=C/(K+U); upper=(C+U)/(K+U) Read these symbols with the field meanings and branch or reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| knownSweepFraction | Known sweep fraction | number |
| wholeSweepLowerBound | Whole sweep lower bound | number |
| wholeSweepUpperBound | Whole sweep upper bound | number |
{
"input": {
"observedAssessedArealExposureM2": [
2,
3
],
"observedContactedArealExposureM2": [
1,
3
],
"observedUnassessedArealExposureM2": [
1,
1
]
},
"output": {
"knownSweepFraction": 0.8,
"wholeSweepLowerBound": 0.5714285714285714,
"wholeSweepUpperBound": 0.8571428571428571
}
}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 Sweep Efficiency Vertical Calculator: Sweep efficiency describes how much of an exposure inventory was contacted by displacement. This vertical audit separates assessed contact from unassessed exposure and returns bounds for the complete inventory. For a complementary step, use Petroleum Volumetric Sweep Efficiency Calculator: Volumetric sweep measures the contacted fraction of a three-dimensional pore-volume inventory. This tool pools assessed cells and bounds the effect of unknown cells, without multiplying unrelated areal and vertical percentages.
References
Similar or alternative tools
- Petroleum Sweep Efficiency Vertical Calculator
Sweep efficiency describes how much of an exposure inventory was contacted by displacement. This vertical audit separates assessed contact from unassessed exposure and returns bounds for the complete inventory.
- Petroleum Volumetric Sweep Efficiency Calculator
Volumetric sweep measures the contacted fraction of a three-dimensional pore-volume inventory. This tool pools assessed cells and bounds the effect of unknown cells, without multiplying unrelated areal and vertical percentages.