Find the wells your
reserve report is hiding.
Upload production history — get a 0–100 quality score, the 7 red flags lenders and audit committees look for first, and a ranked list of the wells that need a human reservoir engineer to look. Built for RBL borrowing-base reviews, M&A diligence, and SEC 10-K reserve audits.
Independent borrowing-base second-look
Banks redetermine every April and October. We give credit committees an independent view of borrower decline curves — Stanford PhD-signed, 5-day turnaround, not relationship-conflicted.
30-day bid-window diligence
Sellers' type curves get marked down 15–30% in diligence. We find the soft spots inside your window — fixed scope, $25k for 100 wells, output is a 12-page memo your IC can read in 20 minutes.
SEC 10-K reserve sanity check
PUDs from 2022 hit the SEC 5-year mark in your next 10-K. We build the Item 1202 "process review" narrative — quiet, $35k, 3 weeks.
1. Upload or paste your production history
Monthly CSV with at minimum well_id, date, oil_bopd. Alias columns accepted (API, date, oil_rate, etc.). Optional: gas_mcfd, water_bpd, days_on.
7 red flags we surface
- ●b-factor > 1.5 (critical at > 2.0)
- ●Insufficient data (<6 months)
- ●Poor fit quality (RMSE > 35%)
- ●Wide P10/P90 EUR uncertainty (>3×)
- ●Suspiciously shallow decline
- ●Hyperbolic fit failure
- ●Aggressive remaining EUR vs. cum-to-date
Need this on a 500-well package, with a lender-formatted PDF and PV10 sensitivity? Book a Red-Flag Review →
2. Portfolio quality scorecard
Score distribution across wells
Red-flag frequency
Total EUR (mid)
Cumulative-to-date
Worst-quality wells (sorted by score, lowest first)
| Well | Score | b-factor | Di /yr | EUR mid (MBOE) | Flags |
|---|
This scan flagged wells. Want to defend them — or call them out?
A fixed-scope Reserve Red-Flag Review turns this scan into a lender- or auditor-ready memo: per-well red flags + PV10 sensitivity + PUD compliance + a 12-page narrative your credit committee can sign off on. Starting at $12,500, 5 business days, Stanford PhD reservoir engineer.
Methodology
Decline-curve fitting
Per-well Arps hyperbolic fit (least-squares) on post-peak rate history. Falls back to exponential when hyperbolic fails. Bootstrap residual resampling (100 iterations) for P10/P50/P90 EUR. Methodology grounded in SPE-201404-MS and GPSA Engineering Data Book Section 17.
Red-flag scoring
Each well starts at 100. Critical findings deduct 25; warnings deduct 10; informational notes do not deduct. Portfolio score is the cum-weighted average. Thresholds anchored to SPE b-factor norms and Cawley-Gillespie public PUD guidance.
Screening tool, not a reserve report or SEC reserve opinion. For a defensible per-well audit, see the Reserve Red-Flag Review service.