WHELAN OU4
WHELAN OU4 is a Texas oil lease in Harrison County, Railroad Commission district 06, operated by Tanos Exploration IV, LLC. It has 1 wellbore on file with the Commission. Reported production runs from June 2025 to August 2026, totalling 43,513 barrels. The lease is currently producing. Fitting a decline curve to that history and pricing the remaining production at today's forward curve values the whole lease — a 100% undivided interest — at about $3.0M, with roughly $1.2M expected over the next twelve months. An individual royalty owner receives their own decimal interest times that figure. Over the last twelve months on file it averaged 3,743 barrels a month. Its strongest month on the record we hold was June 2025, at 6,625 barrels. In our own backtest, leases producing at this rate are forecast to within about 17% of what they went on to produce, and that measured error is the range shown on the page rather than a confidence of our own devising.
Key facts about WHELAN OU4
- Who operates WHELAN OU4?
- WHELAN OU4 is operated by Tanos Exploration IV, LLC, Railroad Commission of Texas operator number 101883.
- Where is WHELAN OU4?
- WHELAN OU4 is a Texas oil lease in Harrison County, Texas, in Railroad Commission district 06. Its Railroad Commission lease number is 16135.
- Is WHELAN OU4 still producing?
- WHELAN OU4 is currently producing. The most recent month of production reported to the Railroad Commission of Texas for WHELAN OU4 is August 2026.
- How much has WHELAN OU4 produced?
- WHELAN OU4 has reported 43,513 barrels of oil (bbl) to the Railroad Commission of Texas between June 2025 and August 2026, from 1 wellbore.
- How much is WHELAN OU4 worth?
- The remaining production from WHELAN OU4 is estimated to be worth about $3.0M in total as of 26 August 2026, within a range of $2.5M to $3.5M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in WHELAN OU4 is a fraction of it. The estimate fits an Arps decline curve to the production WHELAN OU4 has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for WHELAN OU4 is an estimate of value, not an offer and not an appraisal.
- How much income does WHELAN OU4 generate in a year?
- WHELAN OU4 is forecast to net about $1.2M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in WHELAN OU4 receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Tanos Exploration IV, LLC |
|---|---|
| Field | Whelan (Pettit) |
| County | Harrison County, Texas |
| RRC district | 06 |
| Lease number | 16135 |
| Wellbores | 1 |
| Reported production | 43,513 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $3.0M |
Where WHELAN OU4 sits
Source: Railroad Commission of Texas lease production records, complete through . Figures on this page were computed on .
Production figures are as reported to the Railroad Commission of Texas. The value shown is an estimate produced by fitting a decline curve to that reported history; it is not an offer or an appraisal. How this estimate is calculated.