MEDINA-JONAS UNIT A
MEDINA-JONAS UNIT A is a Texas oil lease in Karnes County, Railroad Commission district 02, operated by Marathon Oil Ef LLC. It has 7 wellbores on file with the Commission. Reported production runs from November 2011 to August 2026, totalling 1,766,551 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 $11.3M, with roughly $3.2M 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 4,951 barrels a month, about 707 per wellbore. Its strongest month on the record we hold was April 2017, at 104,526 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 MEDINA-JONAS UNIT A
- Who operates MEDINA-JONAS UNIT A?
- MEDINA-JONAS UNIT A is operated by Marathon Oil Ef LLC, Railroad Commission of Texas operator number 525398.
- Where is MEDINA-JONAS UNIT A?
- MEDINA-JONAS UNIT A is a Texas oil lease in Karnes County, Texas, in Railroad Commission district 02. Its Railroad Commission lease number is 09889.
- Is MEDINA-JONAS UNIT A still producing?
- MEDINA-JONAS UNIT A is currently producing. The most recent month of production reported to the Railroad Commission of Texas for MEDINA-JONAS UNIT A is August 2026.
- How much has MEDINA-JONAS UNIT A produced?
- MEDINA-JONAS UNIT A has reported 1,766,551 barrels of oil (bbl) to the Railroad Commission of Texas between November 2011 and August 2026, from 7 wellbores.
- How much is MEDINA-JONAS UNIT A worth?
- The remaining production from MEDINA-JONAS UNIT A is estimated to be worth about $11.3M in total as of 27 August 2026, within a range of $9.3M to $13.2M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in MEDINA-JONAS UNIT A is a fraction of it. The estimate fits an Arps decline curve to the production MEDINA-JONAS 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 MEDINA-JONAS UNIT A is an estimate of value, not an offer and not an appraisal.
- How much income does MEDINA-JONAS UNIT A generate in a year?
- MEDINA-JONAS UNIT A is forecast to net about $3.2M across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in MEDINA-JONAS 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 | Eagleville (Eagle Ford-2) |
| County | Karnes County, Texas |
| RRC district | 02 |
| Lease number | 09889 |
| Wellbores | 7 |
| Reported production | 1,766,551 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $11.3M |
Where MEDINA-JONAS 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.