MARTIN-MASON RANCH UNIT A
MARTIN-MASON RANCH UNIT A is a Texas oil lease in Mcmullen County, Railroad Commission district 01, operated by Chesapeake Operating, Inc. It has 2 wellbores on file with the Commission. Reported production runs from December 2010 to August 2026, totalling 292,603 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 $779K, with roughly $199K 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 293 barrels a month, about 147 per wellbore. Its strongest month on the record we hold was May 2016, at 2,019 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 MARTIN-MASON RANCH UNIT A
- Who operates MARTIN-MASON RANCH UNIT A?
- MARTIN-MASON RANCH UNIT A is operated by Chesapeake Operating, Inc., Railroad Commission of Texas operator number 147715.
- Where is MARTIN-MASON RANCH UNIT A?
- MARTIN-MASON RANCH UNIT A is a Texas oil lease in Mcmullen County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 15510.
- Is MARTIN-MASON RANCH UNIT A still producing?
- MARTIN-MASON RANCH UNIT A is currently producing. The most recent month of production reported to the Railroad Commission of Texas for MARTIN-MASON RANCH UNIT A is August 2026.
- How much has MARTIN-MASON RANCH UNIT A produced?
- MARTIN-MASON RANCH UNIT A has reported 292,603 barrels of oil (bbl) to the Railroad Commission of Texas between December 2010 and August 2026, from 2 wellbores.
- How much is MARTIN-MASON RANCH UNIT A worth?
- The remaining production from MARTIN-MASON RANCH UNIT A is estimated to be worth about $779K in total as of 27 August 2026, within a range of $608K to $951K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in MARTIN-MASON RANCH UNIT A is a fraction of it. The estimate fits an Arps decline curve to the production MARTIN-MASON RANCH UNIT A has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for MARTIN-MASON RANCH UNIT A is an estimate of value, not an offer and not an appraisal.
- How much income does MARTIN-MASON RANCH UNIT A generate in a year?
- MARTIN-MASON RANCH UNIT A is forecast to net about $199K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in MARTIN-MASON RANCH UNIT A receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Chesapeake Operating, Inc. |
|---|---|
| Field | Eagleville (Eagle Ford-1) |
| County | Mcmullen County, Texas |
| RRC district | 01 |
| Lease number | 15510 |
| Wellbores | 2 |
| Reported production | 292,603 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $779K |
Where MARTIN-MASON RANCH UNIT A 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.