SULLIVAN, D.J. -B-
SULLIVAN, D.J. -B- is a Texas oil lease in Brooks County, Railroad Commission district 04, operated by Costilla Energy, Inc. It has 20 wellbores on file with the Commission. Reported production runs from August 1998 to August 2026, totalling 139,489 barrels. The lease is intermittent. 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 $118K, with roughly $16K 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 4 barrels a month. Its strongest month on the record we hold was March 2022, at 456 barrels. In our own backtest, leases producing at this rate are forecast to within about 100% 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 SULLIVAN, D.J. -B-
- Who operates SULLIVAN, D.J. -B-?
- SULLIVAN, D.J. -B- is operated by Costilla Energy, Inc., Railroad Commission of Texas operator number 180543.
- Where is SULLIVAN, D.J. -B-?
- SULLIVAN, D.J. -B- is a Texas oil lease in Brooks County, Texas, in Railroad Commission district 04. Its Railroad Commission lease number is 12804.
- Is SULLIVAN, D.J. -B- still producing?
- SULLIVAN, D.J. -B- is intermittent. The most recent month of production reported to the Railroad Commission of Texas for SULLIVAN, D.J. -B- is August 2026.
- How much has SULLIVAN, D.J. -B- produced?
- SULLIVAN, D.J. -B- has reported 139,489 barrels of oil (bbl) to the Railroad Commission of Texas between August 1998 and August 2026, from 20 wellbores.
- How much is SULLIVAN, D.J. -B- worth?
- The remaining production from SULLIVAN, D.J. -B- is estimated to be worth about $118K in total as of 26 August 2026, within a range of $0 to $237K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SULLIVAN, D.J. -B- is a fraction of it. The estimate fits an Arps decline curve to the production SULLIVAN, D.J. -B- has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SULLIVAN, D.J. -B- is an estimate of value, not an offer and not an appraisal.
- How much income does SULLIVAN, D.J. -B- generate in a year?
- SULLIVAN, D.J. -B- is forecast to net about $16K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in SULLIVAN, D.J. -B- receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Costilla Energy, Inc. |
|---|---|
| Field | Pita (Frio Consolidated) |
| County | Brooks County, Texas |
| RRC district | 04 |
| Lease number | 12804 |
| Wellbores | 20 |
| Reported production | 139,489 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $118K |
Where SULLIVAN, D.J. -B- 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.