SULLIVAN IV
SULLIVAN IV is a Texas gas lease in Brooks County, Railroad Commission district 04, operated by Erskine Energy, LLC. It has 1 wellbore on file with the Commission. Reported production runs from February 2006 to August 2026, totalling 1,813,961 thousand cubic feet. 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 $835K, with roughly $242K 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 5,239 thousand cubic feet a month. Its strongest month on the record we hold was September 2024, at 24,524 thousand cubic feet. 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 SULLIVAN IV
- Who operates SULLIVAN IV?
- SULLIVAN IV is operated by Erskine Energy, LLC, Railroad Commission of Texas operator number 254058.
- Where is SULLIVAN IV?
- SULLIVAN IV is a Texas gas lease in Brooks County, Texas, in Railroad Commission district 04. Its Railroad Commission lease number is 224717.
- Is SULLIVAN IV still producing?
- SULLIVAN IV is currently producing. The most recent month of production reported to the Railroad Commission of Texas for SULLIVAN IV is August 2026.
- How much has SULLIVAN IV produced?
- SULLIVAN IV has reported 1,813,961 thousand cubic feet of gas (Mcf) to the Railroad Commission of Texas between February 2006 and August 2026, from 1 wellbore.
- How much is SULLIVAN IV worth?
- The remaining production from SULLIVAN IV is estimated to be worth about $835K in total as of 26 August 2026, within a range of $693K to $977K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SULLIVAN IV is a fraction of it. The estimate fits an Arps decline curve to the production SULLIVAN IV has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SULLIVAN IV is an estimate of value, not an offer and not an appraisal.
- How much income does SULLIVAN IV generate in a year?
- SULLIVAN IV is forecast to net about $242K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in SULLIVAN IV receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Erskine Energy, LLC |
|---|---|
| Field | Ann Mag, East (Blainey) |
| County | Brooks County, Texas |
| RRC district | 04 |
| Lease number | 224717 |
| Wellbores | 1 |
| Reported production | 1,813,961 mcf |
| First reported | |
| Last reported | |
| Estimated royalty value | $835K |
Where SULLIVAN IV 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.