STEWART GIESE HENKE SA4
STEWART GIESE HENKE SA4 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 July 2024 to August 2026, totalling 231,066 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 $11.6M, with roughly $4.4M 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 11,400 barrels a month. Its strongest month on the record we hold was February 2025, at 31,968 barrels. In our own backtest, leases producing at this rate are forecast to within about 18% 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 GIESE HENKE SA4
- Who operates STEWART GIESE HENKE SA4?
- STEWART GIESE HENKE SA4 is operated by Marathon Oil Ef LLC, Railroad Commission of Texas operator number 525398.
- Where is STEWART GIESE HENKE SA4?
- STEWART GIESE HENKE SA4 is a Texas oil lease in Atascosa County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 21658.
- Is STEWART GIESE HENKE SA4 still producing?
- STEWART GIESE HENKE SA4 is currently producing. The most recent month of production reported to the Railroad Commission of Texas for STEWART GIESE HENKE SA4 is August 2026.
- How much has STEWART GIESE HENKE SA4 produced?
- STEWART GIESE HENKE SA4 has reported 231,066 barrels of oil (bbl) to the Railroad Commission of Texas between July 2024 and August 2026, from 1 wellbore.
- How much is STEWART GIESE HENKE SA4 worth?
- The remaining production from STEWART GIESE HENKE SA4 is estimated to be worth about $11.6M in total as of 26 August 2026, within a range of $9.6M to $13.7M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in STEWART GIESE HENKE SA4 is a fraction of it. The estimate fits an Arps decline curve to the production STEWART GIESE HENKE SA4 has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for STEWART GIESE HENKE SA4 is an estimate of value, not an offer and not an appraisal.
- How much income does STEWART GIESE HENKE SA4 generate in a year?
- STEWART GIESE HENKE SA4 is forecast to net about $4.4M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in STEWART GIESE HENKE SA4 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 | 21658 |
| Wellbores | 1 |
| Reported production | 231,066 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $11.6M |
Where STEWART GIESE HENKE SA4 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.