KOWALIK 228-1R
KOWALIK 228-1R is a Texas gas 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 September 2014 to August 2026, totalling 777,974 thousand cubic feet. 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 $977K, with roughly $210K 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 1,069 thousand cubic feet a month. Its strongest month on the record we hold was May 2016, at 21,084 thousand cubic feet. 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 KOWALIK 228-1R
- Who operates KOWALIK 228-1R?
- KOWALIK 228-1R is operated by Marathon Oil Ef LLC, Railroad Commission of Texas operator number 525398.
- Where is KOWALIK 228-1R?
- KOWALIK 228-1R is a Texas gas lease in Karnes County, Texas, in Railroad Commission district 02. Its Railroad Commission lease number is 288734.
- Is KOWALIK 228-1R still producing?
- KOWALIK 228-1R is currently producing. The most recent month of production reported to the Railroad Commission of Texas for KOWALIK 228-1R is August 2026.
- How much has KOWALIK 228-1R produced?
- KOWALIK 228-1R has reported 777,974 thousand cubic feet of gas (Mcf) to the Railroad Commission of Texas between September 2014 and August 2026, from 1 wellbore.
- How much is KOWALIK 228-1R worth?
- The remaining production from KOWALIK 228-1R is estimated to be worth about $977K in total as of 26 August 2026, within a range of $811K to $1.1M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in KOWALIK 228-1R is a fraction of it. The estimate fits an Arps decline curve to the production KOWALIK 228-1R has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for KOWALIK 228-1R is an estimate of value, not an offer and not an appraisal.
- How much income does KOWALIK 228-1R generate in a year?
- KOWALIK 228-1R is forecast to net about $210K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in KOWALIK 228-1R receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Marathon Oil Ef LLC |
|---|---|
| Field | Sugarkane (Eagle Ford) |
| County | Karnes County, Texas |
| RRC district | 02 |
| Lease number | 288734 |
| Wellbores | 1 |
| Reported production | 777,974 mcf |
| First reported | |
| Last reported | |
| Estimated royalty value | $977K |
Where KOWALIK 228-1R 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.