MAY-CHAPMAN
MAY-CHAPMAN is a Texas gas lease in Atascosa County, Railroad Commission district 01, operated by Marathon Oil Ef LLC. It has 1 wellbore on file with the Commission. Reported production runs from June 2018 to August 2026, totalling 48,726 thousand cubic feet. 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 $140K, with roughly $27K 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 34 thousand cubic feet a month. Its strongest month on the record we hold was September 2019, at 1,132 thousand cubic feet. 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 MAY-CHAPMAN
- Who operates MAY-CHAPMAN?
- MAY-CHAPMAN is operated by Marathon Oil Ef LLC, Railroad Commission of Texas operator number 525398.
- Where is MAY-CHAPMAN?
- MAY-CHAPMAN is a Texas gas lease in Atascosa County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 289419.
- Is MAY-CHAPMAN still producing?
- MAY-CHAPMAN is intermittent. The most recent month of production reported to the Railroad Commission of Texas for MAY-CHAPMAN is August 2026.
- How much has MAY-CHAPMAN produced?
- MAY-CHAPMAN has reported 48,726 thousand cubic feet of gas (Mcf) to the Railroad Commission of Texas between June 2018 and August 2026, from 1 wellbore.
- How much is MAY-CHAPMAN worth?
- The remaining production from MAY-CHAPMAN is estimated to be worth about $140K in total as of 27 August 2026, within a range of $77K to $203K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in MAY-CHAPMAN is a fraction of it. The estimate fits an Arps decline curve to the production MAY-CHAPMAN has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for MAY-CHAPMAN is an estimate of value, not an offer and not an appraisal.
- How much income does MAY-CHAPMAN generate in a year?
- MAY-CHAPMAN is forecast to net about $27K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in MAY-CHAPMAN 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-1) |
| County | Atascosa County, Texas |
| RRC district | 01 |
| Lease number | 289419 |
| Wellbores | 1 |
| Reported production | 48,726 mcf |
| First reported | |
| Last reported | |
| Estimated royalty value | $140K |
Where MAY-CHAPMAN 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.