S.MCFARLAND-CHALLENGER C SA
S.MCFARLAND-CHALLENGER C SA is a Texas oil lease in Karnes County, Railroad Commission district 02, operated by Marathon Oil Ef LLC. It has 1 wellbore on file with the Commission. Reported production runs from November 2018 to August 2026, totalling 211,191 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 $591K, with roughly $113K 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 73 barrels a month. Its strongest month on the record we hold was March 2019, at 17,317 barrels. In our own backtest, leases producing at this rate are forecast to within about 45% 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 S.MCFARLAND-CHALLENGER C SA
- Who operates S.MCFARLAND-CHALLENGER C SA?
- S.MCFARLAND-CHALLENGER C SA is operated by Marathon Oil Ef LLC, Railroad Commission of Texas operator number 525398.
- Where is S.MCFARLAND-CHALLENGER C SA?
- S.MCFARLAND-CHALLENGER C SA is a Texas oil lease in Karnes County, Texas, in Railroad Commission district 02. Its Railroad Commission lease number is 11657.
- Is S.MCFARLAND-CHALLENGER C SA still producing?
- S.MCFARLAND-CHALLENGER C SA is intermittent. The most recent month of production reported to the Railroad Commission of Texas for S.MCFARLAND-CHALLENGER C SA is August 2026.
- How much has S.MCFARLAND-CHALLENGER C SA produced?
- S.MCFARLAND-CHALLENGER C SA has reported 211,191 barrels of oil (bbl) to the Railroad Commission of Texas between November 2018 and August 2026, from 1 wellbore.
- How much is S.MCFARLAND-CHALLENGER C SA worth?
- The remaining production from S.MCFARLAND-CHALLENGER C SA is estimated to be worth about $591K in total as of 27 August 2026, within a range of $325K to $857K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in S.MCFARLAND-CHALLENGER C SA is a fraction of it. The estimate fits an Arps decline curve to the production S.MCFARLAND-CHALLENGER C SA has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for S.MCFARLAND-CHALLENGER C SA is an estimate of value, not an offer and not an appraisal.
- How much income does S.MCFARLAND-CHALLENGER C SA generate in a year?
- S.MCFARLAND-CHALLENGER C SA is forecast to net about $113K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in S.MCFARLAND-CHALLENGER C SA 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-2) |
| County | Karnes County, Texas |
| RRC district | 02 |
| Lease number | 11657 |
| Wellbores | 1 |
| Reported production | 211,191 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $591K |
Where S.MCFARLAND-CHALLENGER C SA 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.