CHALLENGER AC UNIT A
CHALLENGER AC UNIT A is a Texas oil lease in Karnes County, Railroad Commission district 02, operated by Marathon Oil Ef LLC. It has 2 wellbores on file with the Commission. Reported production runs from June 2021 to August 2026, totalling 552,181 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 $9.5M, with roughly $2.4M 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 3,185 barrels a month, about 1,593 per wellbore. Its strongest month on the record we hold was September 2021, at 74,312 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 CHALLENGER AC UNIT A
- Who operates CHALLENGER AC UNIT A?
- CHALLENGER AC UNIT A is operated by Marathon Oil Ef LLC, Railroad Commission of Texas operator number 525398.
- Where is CHALLENGER AC UNIT A?
- CHALLENGER AC UNIT A is a Texas oil lease in Karnes County, Texas, in Railroad Commission district 02. Its Railroad Commission lease number is 12193.
- Is CHALLENGER AC UNIT A still producing?
- CHALLENGER AC UNIT A is currently producing. The most recent month of production reported to the Railroad Commission of Texas for CHALLENGER AC UNIT A is August 2026.
- How much has CHALLENGER AC UNIT A produced?
- CHALLENGER AC UNIT A has reported 552,181 barrels of oil (bbl) to the Railroad Commission of Texas between June 2021 and August 2026, from 2 wellbores.
- How much is CHALLENGER AC UNIT A worth?
- The remaining production from CHALLENGER AC UNIT A is estimated to be worth about $9.5M in total as of 26 August 2026, within a range of $7.9M to $11.1M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in CHALLENGER AC UNIT A is a fraction of it. The estimate fits an Arps decline curve to the production CHALLENGER AC UNIT A has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for CHALLENGER AC UNIT A is an estimate of value, not an offer and not an appraisal.
- How much income does CHALLENGER AC UNIT A generate in a year?
- CHALLENGER AC UNIT A is forecast to net about $2.4M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in CHALLENGER AC UNIT A receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Marathon Oil Ef LLC |
|---|---|
| Field | Sugarkane (Austin Chalk) |
| County | Karnes County, Texas |
| RRC district | 02 |
| Lease number | 12193 |
| Wellbores | 2 |
| Reported production | 552,181 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $9.5M |
Where CHALLENGER AC UNIT A 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.