EGS Collab 4100L stress measurements (measured)
Measured straddle-packer hydrofrac records run blind through the in-app ISIP pick, compared with the published AGU poster table.
Aggregate metrics
| Metric | n | MAE | RMSE | MAPE | Bias | P10/P50/P90 rel | Grade |
|---|---|---|---|---|---|---|---|
| isipPsi [psi] | 10 | 44.610 | 51.517 | 1.4% | 6.367 | 0.5 / 1.3 / 2.5% | A |
Per-case observed vs modeled
| Case | Metric | Observed | Modeled | Residual | Rel err |
|---|---|---|---|---|---|
| frac-1 | isipPsi [psi] | 3364.882 | 3442.937 | 78.056 | 2.3% |
| frac-2 | isipPsi [psi] | 3176.332 | 3187.576 | 11.244 | 0.4% |
| frac-3 | isipPsi [psi] | 3379.385 | 3404.285 | 24.900 | 0.7% |
| frac-4 | isipPsi [psi] | 3248.851 | 3330.220 | 81.369 | 2.5% |
| frac-5 | isipPsi [psi] | 3016.790 | 2999.291 | -17.500 | 0.6% |
| frac-6 | isipPsi [psi] | 3161.828 | 3084.357 | -77.472 | 2.5% |
| frac-7 | isipPsi [psi] | 2175.570 | 2137.178 | -38.392 | 1.8% |
| frac-8 | isipPsi [psi] | 2755.722 | 2697.873 | -57.849 | 2.1% |
| frac-9 | isipPsi [psi] | 3988.545 | 4008.390 | 19.845 | 0.5% |
| frac-10 | isipPsi [psi] | 4293.125 | 4332.598 | 39.473 | 0.9% |
Benchmark inputs (per case)
| Case | Input | Value |
|---|---|---|
| frac-1 | frac | 1 |
| frac-1 | intervalCenterM | 10.2 |
| frac-1 | posterBreakdownPsi | 4,249.613 |
| frac-1 | posterInitiationPsi | 3,669.461 |
| frac-2 | frac | 2 |
| frac-2 | intervalCenterM | 12.1 |
| frac-2 | posterBreakdownPsi | 3,625.95 |
| frac-2 | posterInitiationPsi | 3,524.423 |
| frac-3 | frac | 3 |
| frac-3 | intervalCenterM | 15.6 |
| frac-3 | posterBreakdownPsi | 3,741.98 |
| frac-3 | posterInitiationPsi | 3,190.836 |
| frac-4 | frac | 4 |
| frac-4 | intervalCenterM | 20.1 |
| frac-4 | posterBreakdownPsi | 3,437.401 |
| frac-4 | posterInitiationPsi | 3,364.882 |
| frac-5 | frac | 5 |
| frac-5 | intervalCenterM | 25.7 |
| frac-5 | posterBreakdownPsi | 3,596.942 |
| frac-5 | posterInitiationPsi | 3,234.347 |
| frac-6 | frac | 6 |
| frac-6 | intervalCenterM | 27.9 |
| frac-6 | posterBreakdownPsi | 3,393.889 |
| frac-6 | posterInitiationPsi | 2,683.203 |
| frac-7 | frac | 7 |
| frac-7 | intervalCenterM | 36.9 |
| frac-7 | posterBreakdownPsi | 2,451.142 |
| frac-7 | posterInitiationPsi | 2,291.6 |
| frac-8 | frac | 8 |
| frac-8 | intervalCenterM | 40.4 |
| frac-8 | posterBreakdownPsi | 2,596.18 |
| frac-8 | posterInitiationPsi | 2,509.157 |
| frac-9 | frac | 9 |
| frac-9 | intervalCenterM | 44.6 |
| frac-9 | posterBreakdownPsi | 4,380.148 |
| frac-9 | posterInitiationPsi | 3,945.034 |
| frac-10 | frac | 10 |
| frac-10 | intervalCenterM | 47.3 |
| frac-10 | posterBreakdownPsi | 5,076.33 |
| frac-10 | posterInitiationPsi | 4,945.796 |
Scoring breakdown
Grade bands (worst-metric rollup)
A · MAPE ≤ 10%
B · MAPE ≤ 20%
C · MAPE ≤ 35%
D · MAPE > 35%
| Metric | MAPE | Grade | Drives rollup? |
|---|---|---|---|
| isipPsi | 1.4% | A | yes (worst) |
Dataset rollup grade:
A
— the worst per-metric grade sets the card chip.Citations
Ingraham, M.D. et al. (2019), Analysis of hydraulic fractures performed on the 4100 level at the Sanford Underground Research Facility, AGU Fall Meeting H11K-1642 (SAND2019-14551 C).
DOI / ref:
—EGS Collab 4100L stress-measurement raw data and metadata key, August 2019.
DOI / ref:
—U.S. DOE public data (EGS Collab / SURF).
Compiled: 2026-10-01