STEWART-HENKE UNIT
STEWART-HENKE UNIT is a Texas oil lease in Atascosa County, Railroad Commission district 01, operated by Marathon Oil Ef LLC. It has 1 wellbore on file with the Commission. Reported production runs from November 2012 to August 2026, totalling 125,034 barrels. The lease is intermittent. 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 $156K, with roughly $30K 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 239 barrels a month. Its strongest month on the record we hold was August 2016, at 945 barrels. In our own backtest, leases producing at this rate are forecast to within about 22% 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 STEWART-HENKE UNIT
- Who operates STEWART-HENKE UNIT?
- STEWART-HENKE UNIT is operated by Marathon Oil Ef LLC, Railroad Commission of Texas operator number 525398.
- Where is STEWART-HENKE UNIT?
- STEWART-HENKE UNIT is a Texas oil lease in Atascosa County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 16385.
- Is STEWART-HENKE UNIT still producing?
- STEWART-HENKE UNIT is intermittent. The most recent month of production reported to the Railroad Commission of Texas for STEWART-HENKE UNIT is August 2026.
- How much has STEWART-HENKE UNIT produced?
- STEWART-HENKE UNIT has reported 125,034 barrels of oil (bbl) to the Railroad Commission of Texas between November 2012 and August 2026, from 1 wellbore.
- How much is STEWART-HENKE UNIT worth?
- The remaining production from STEWART-HENKE UNIT is estimated to be worth about $156K in total as of 27 August 2026, within a range of $122K to $191K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in STEWART-HENKE UNIT is a fraction of it. The estimate fits an Arps decline curve to the production STEWART-HENKE UNIT has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for STEWART-HENKE UNIT is an estimate of value, not an offer and not an appraisal.
- How much income does STEWART-HENKE UNIT generate in a year?
- STEWART-HENKE UNIT is forecast to net about $30K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in STEWART-HENKE UNIT receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Marathon Oil Ef LLC |
|---|---|
| Field | Eagleville (Eagle Ford-1) |
| County | Atascosa County, Texas |
| RRC district | 01 |
| Lease number | 16385 |
| Wellbores | 1 |
| Reported production | 125,034 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $156K |
Where STEWART-HENKE UNIT 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.