BROWN-DUPNIK B UNIT
BROWN-DUPNIK B UNIT is a Texas oil lease in Karnes County, Railroad Commission district 02, operated by Marathon Oil Ef LLC. It has 3 wellbores on file with the Commission. Reported production runs from February 2013 to August 2026, totalling 713,037 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 $2.7M, with roughly $1.3M 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 2,160 barrels a month, about 720 per wellbore. Its strongest month on the record we hold was March 2022, at 96,405 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 BROWN-DUPNIK B UNIT
- Who operates BROWN-DUPNIK B UNIT?
- BROWN-DUPNIK B UNIT is operated by Marathon Oil Ef LLC, Railroad Commission of Texas operator number 525398.
- Where is BROWN-DUPNIK B UNIT?
- BROWN-DUPNIK B UNIT is a Texas oil lease in Karnes County, Texas, in Railroad Commission district 02. Its Railroad Commission lease number is 10435.
- Is BROWN-DUPNIK B UNIT still producing?
- BROWN-DUPNIK B UNIT is currently producing. The most recent month of production reported to the Railroad Commission of Texas for BROWN-DUPNIK B UNIT is August 2026.
- How much has BROWN-DUPNIK B UNIT produced?
- BROWN-DUPNIK B UNIT has reported 713,037 barrels of oil (bbl) to the Railroad Commission of Texas between February 2013 and August 2026, from 3 wellbores.
- How much is BROWN-DUPNIK B UNIT worth?
- The remaining production from BROWN-DUPNIK B UNIT is estimated to be worth about $2.7M in total as of 27 August 2026, within a range of $2.3M to $3.2M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in BROWN-DUPNIK B UNIT is a fraction of it. The estimate fits an Arps decline curve to the production BROWN-DUPNIK B UNIT has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for BROWN-DUPNIK B UNIT is an estimate of value, not an offer and not an appraisal.
- How much income does BROWN-DUPNIK B UNIT generate in a year?
- BROWN-DUPNIK B UNIT is forecast to net about $1.3M across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in BROWN-DUPNIK B 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-2) |
| County | Karnes County, Texas |
| RRC district | 02 |
| Lease number | 10435 |
| Wellbores | 3 |
| Reported production | 713,037 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $2.7M |
Where BROWN-DUPNIK B 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.