SWAIM
SWAIM is a Texas oil lease in Mcmullen County, Railroad Commission district 01, operated by Murphy Expl. & Prod. Co. - USA. It has 19 wellbores on file with the Commission. Reported production runs from February 2011 to August 2026, totalling 2,100,846 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 $7.6M, with roughly $3.2M 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 3,388 barrels a month, about 178 per wellbore. Its strongest month on the record we hold was July 2017, at 53,342 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 SWAIM
- Who operates SWAIM?
- SWAIM is operated by Murphy Expl. & Prod. Co. - USA, Railroad Commission of Texas operator number 594675.
- Where is SWAIM?
- SWAIM is a Texas oil lease in Mcmullen County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 15429.
- Is SWAIM still producing?
- SWAIM is currently producing. The most recent month of production reported to the Railroad Commission of Texas for SWAIM is August 2026.
- How much has SWAIM produced?
- SWAIM has reported 2,100,846 barrels of oil (bbl) to the Railroad Commission of Texas between February 2011 and August 2026, from 19 wellbores.
- How much is SWAIM worth?
- The remaining production from SWAIM is estimated to be worth about $7.6M in total as of 27 August 2026, within a range of $6.3M to $8.9M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SWAIM is a fraction of it. The estimate fits an Arps decline curve to the production SWAIM has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SWAIM is an estimate of value, not an offer and not an appraisal.
- How much income does SWAIM generate in a year?
- SWAIM is forecast to net about $3.2M across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in SWAIM receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Murphy Expl. & Prod. Co. - USA |
|---|---|
| Field | Eagleville (Eagle Ford-1) |
| County | Mcmullen County, Texas |
| RRC district | 01 |
| Lease number | 15429 |
| Wellbores | 19 |
| Reported production | 2,100,846 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $7.6M |
Where SWAIM 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.