SEMMES
SEMMES is a Texas gas lease in Starr County, Railroad Commission district 04, operated by Hamman Oil & Refining Company. It has 1 wellbore on file with the Commission. Reported production runs from October 2007 to August 2026, totalling 921,889 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 $439K, with roughly $83K 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 2,518 thousand cubic feet a month. Its strongest month on the record we hold was December 2018, at 18,639 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 SEMMES
- Who operates SEMMES?
- SEMMES is operated by Hamman Oil & Refining Company, Railroad Commission of Texas operator number 350200.
- Where is SEMMES?
- SEMMES is a Texas gas lease in Starr County, Texas, in Railroad Commission district 04. Its Railroad Commission lease number is 232653.
- Is SEMMES still producing?
- SEMMES is currently producing. The most recent month of production reported to the Railroad Commission of Texas for SEMMES is August 2026.
- How much has SEMMES produced?
- SEMMES has reported 921,889 thousand cubic feet of gas (Mcf) to the Railroad Commission of Texas between October 2007 and August 2026, from 1 wellbore.
- How much is SEMMES worth?
- The remaining production from SEMMES is estimated to be worth about $439K in total as of 26 August 2026, within a range of $365K to $514K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SEMMES is a fraction of it. The estimate fits an Arps decline curve to the production SEMMES has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SEMMES is an estimate of value, not an offer and not an appraisal.
- How much income does SEMMES generate in a year?
- SEMMES is forecast to net about $83K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in SEMMES receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Hamman Oil & Refining Company |
|---|---|
| Field | Garcias Ridge (Queen City) |
| County | Starr County, Texas |
| RRC district | 04 |
| Lease number | 232653 |
| Wellbores | 1 |
| Reported production | 921,889 mcf |
| First reported | |
| Last reported | |
| Estimated royalty value | $439K |
Where SEMMES 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.