Multi-Resolution Wavelet EUR Forecasting for Unconventional Wells
Author: Eric Waller
Version: 3.1
License: All Rights Reserved (see LICENSE)
Forecasts EUR (Estimated Ultimate Recovery) with P10/P50/P90 uncertainty bounds for:
- Gas wells (MMSCF)
- Oil wells (MBO)
- Water production (MBW)
Features:
- Multi-phase forecasting (gas, oil, water)
- GOR/WOR/WGR ratio tracking
- Flowback period detection (first 60 days flagged)
- Confidence bands (P10-P90)
- CSV export for ARIES/PHDWin import
- Batch mode for multi-well portfolios
pip install -r requirements.txt
python3 run_example.py sample_well.csv
Outputs:
sample_well_forecast.png- Plot with P10/P50/P90 bandssample_well_forecast.csv- Daily forecast for import
mkdir wells
cp *.csv wells/
python3 run_example.py --batch ./wells/
Outputs:
- Individual plots and CSVs per well
batch_summary.csv- Portfolio summary
CSV with these columns:
| Column | Description | Units | Required |
|---|---|---|---|
| days | Days since first production | days | Yes |
| pressure_psi | Flowing pressure (THP or BHP) | psi | Yes |
| rate_mscfd | Gas rate | MSCF/day | If gas well |
| rate_bblpd | Oil rate | bbl/day | If oil well |
| rate_bwpd | Water rate | bbl/day | Optional |
| File | Description |
|---|---|
| run_example.py | Main forecasting tool |
| sample_well.csv | Example 10,000 ft Permian Wolfcamp A well |
| waller_decomposition_v3.md | Technical white paper |
| requirements.txt | Python dependencies |
| LICENSE | License terms |
Waller, E. (2026). The Waller Decomposition: Multi-Resolution Wavelet EUR Forecasting for Multi-Stage Fractured Horizontal Wells. Technical White Paper v3.0.
See the LICENSE file for details.
- Website: ewaller.com