HALL-MANNING SA9
HALL-MANNING SA9 is a Texas oil lease in Gonzales County, Railroad Commission district 01, operated by Marathon Oil Ef LLC. It has 1 wellbore on file with the Commission. Reported production runs from February 2022 to August 2026, totalling 266,060 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 $1.3M, with roughly $423K 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 410 barrels a month. Its strongest month on the record we hold was April 2022, at 41,836 barrels. In our own backtest, leases producing at this rate are forecast to within about 22% 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 HALL-MANNING SA9
- Who operates HALL-MANNING SA9?
- HALL-MANNING SA9 is operated by Marathon Oil Ef LLC, Railroad Commission of Texas operator number 525398.
- Where is HALL-MANNING SA9?
- HALL-MANNING SA9 is a Texas oil lease in Gonzales County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 20571.
- Is HALL-MANNING SA9 still producing?
- HALL-MANNING SA9 is currently producing. The most recent month of production reported to the Railroad Commission of Texas for HALL-MANNING SA9 is August 2026.
- How much has HALL-MANNING SA9 produced?
- HALL-MANNING SA9 has reported 266,060 barrels of oil (bbl) to the Railroad Commission of Texas between February 2022 and August 2026, from 1 wellbore.
- How much is HALL-MANNING SA9 worth?
- The remaining production from HALL-MANNING SA9 is estimated to be worth about $1.3M in total as of 27 August 2026, within a range of $982K to $1.5M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in HALL-MANNING SA9 is a fraction of it. The estimate fits an Arps decline curve to the production HALL-MANNING SA9 has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for HALL-MANNING SA9 is an estimate of value, not an offer and not an appraisal.
- How much income does HALL-MANNING SA9 generate in a year?
- HALL-MANNING SA9 is forecast to net about $423K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in HALL-MANNING SA9 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 | Gonzales County, Texas |
| RRC district | 01 |
| Lease number | 20571 |
| Wellbores | 1 |
| Reported production | 266,060 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $1.3M |
Where HALL-MANNING SA9 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.