ZAESKE-ECKOLS UNIT
ZAESKE-ECKOLS UNIT is a Texas oil lease in Karnes County, Railroad Commission district 02, operated by Marathon Oil Ef LLC. It has 10 wellbores on file with the Commission. Reported production runs from April 2012 to August 2026, totalling 1,762,577 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 $1.6M, with roughly $816K 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 1,689 barrels a month, about 169 per wellbore. Its strongest month on the record we hold was December 2016, at 155,501 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 ZAESKE-ECKOLS UNIT
- Who operates ZAESKE-ECKOLS UNIT?
- ZAESKE-ECKOLS UNIT is operated by Marathon Oil Ef LLC, Railroad Commission of Texas operator number 525398.
- Where is ZAESKE-ECKOLS UNIT?
- ZAESKE-ECKOLS UNIT is a Texas oil lease in Karnes County, Texas, in Railroad Commission district 02. Its Railroad Commission lease number is 10075.
- Is ZAESKE-ECKOLS UNIT still producing?
- ZAESKE-ECKOLS UNIT is currently producing. The most recent month of production reported to the Railroad Commission of Texas for ZAESKE-ECKOLS UNIT is August 2026.
- How much has ZAESKE-ECKOLS UNIT produced?
- ZAESKE-ECKOLS UNIT has reported 1,762,577 barrels of oil (bbl) to the Railroad Commission of Texas between April 2012 and August 2026, from 10 wellbores.
- How much is ZAESKE-ECKOLS UNIT worth?
- The remaining production from ZAESKE-ECKOLS UNIT is estimated to be worth about $1.6M in total as of 27 August 2026, within a range of $1.4M to $1.9M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in ZAESKE-ECKOLS UNIT is a fraction of it. The estimate fits an Arps decline curve to the production ZAESKE-ECKOLS UNIT has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for ZAESKE-ECKOLS UNIT is an estimate of value, not an offer and not an appraisal.
- How much income does ZAESKE-ECKOLS UNIT generate in a year?
- ZAESKE-ECKOLS UNIT is forecast to net about $816K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in ZAESKE-ECKOLS 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 | 10075 |
| Wellbores | 10 |
| Reported production | 1,762,577 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $1.6M |
Where ZAESKE-ECKOLS 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.