GULF -D-
GULF -D- is a Texas oil lease in Marion County, Railroad Commission district 06, operated by Fossil Energy, Inc. It has 10 wellbores on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 65,074 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 $137K, with roughly $26K 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 36 barrels a month, about 4 per wellbore. Its strongest month on the record we hold was October 2016, at 170 barrels. 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 GULF -D-
- Who operates GULF -D-?
- GULF -D- is operated by Fossil Energy, Inc., Railroad Commission of Texas operator number 278847.
- Where is GULF -D-?
- GULF -D- is a Texas oil lease in Marion County, Texas, in Railroad Commission district 06. Its Railroad Commission lease number is 05405.
- Is GULF -D- still producing?
- GULF -D- is currently producing. The most recent month of production reported to the Railroad Commission of Texas for GULF -D- is August 2026.
- How much has GULF -D- produced?
- GULF -D- has reported 65,074 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 10 wellbores.
- How much is GULF -D- worth?
- The remaining production from GULF -D- is estimated to be worth about $137K in total as of 26 August 2026, within a range of $75K to $199K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in GULF -D- is a fraction of it. The estimate fits an Arps decline curve to the production GULF -D- has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for GULF -D- is an estimate of value, not an offer and not an appraisal.
- How much income does GULF -D- generate in a year?
- GULF -D- is forecast to net about $26K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in GULF -D- receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Fossil Energy, Inc. |
|---|---|
| Field | Marion County (Shallow) |
| County | Marion County, Texas |
| RRC district | 06 |
| Lease number | 05405 |
| Wellbores | 10 |
| Reported production | 65,074 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $137K |
Where GULF -D- 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.