BROOK UNIT O-1D
BROOK UNIT O-1D is a Texas oil lease in Upton County, Railroad Commission district 7C, operated by Pioneer Natural Res. USA, Inc. It has 1 wellbore on file with the Commission. Reported production runs from September 2025 to August 2026, totalling 45,277 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 $6.8M, with roughly $1.5M 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 2,622 barrels a month. Its strongest month on the record we hold was April 2026, at 17,035 barrels. 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 BROOK UNIT O-1D
- Who operates BROOK UNIT O-1D?
- BROOK UNIT O-1D is operated by Pioneer Natural Res. USA, Inc., Railroad Commission of Texas operator number 665748.
- Where is BROOK UNIT O-1D?
- BROOK UNIT O-1D is a Texas oil lease in Upton County, Texas, in Railroad Commission district 7C. Its Railroad Commission lease number is 23479.
- Is BROOK UNIT O-1D still producing?
- BROOK UNIT O-1D is intermittent. The most recent month of production reported to the Railroad Commission of Texas for BROOK UNIT O-1D is August 2026.
- How much has BROOK UNIT O-1D produced?
- BROOK UNIT O-1D has reported 45,277 barrels of oil (bbl) to the Railroad Commission of Texas between September 2025 and August 2026, from 1 wellbore.
- How much is BROOK UNIT O-1D worth?
- The remaining production from BROOK UNIT O-1D is estimated to be worth about $6.8M in total as of 26 August 2026, within a range of $5.6M to $7.9M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in BROOK UNIT O-1D is a fraction of it. The estimate fits an Arps decline curve to the production BROOK UNIT O-1D has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for BROOK UNIT O-1D is an estimate of value, not an offer and not an appraisal.
- How much income does BROOK UNIT O-1D generate in a year?
- BROOK UNIT O-1D is forecast to net about $1.5M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in BROOK UNIT O-1D receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Pioneer Natural Res. USA, Inc. |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Upton County, Texas |
| RRC district | 7C |
| Lease number | 23479 |
| Wellbores | 1 |
| Reported production | 45,277 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $6.8M |
Where BROOK UNIT O-1D 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.