BLOCK 31 UNIT
BLOCK 31 UNIT is a Texas oil lease in Crane County, Railroad Commission district 08, operated by Arco Oil & Gas Co. It has 330 wellbores on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 15,156,233 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 $34.5M, with roughly $8.0M 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 3,517 barrels a month, about 11 per wellbore. Its strongest month on the record we hold was February 2018, at 13,724 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 BLOCK 31 UNIT
- Who operates BLOCK 31 UNIT?
- BLOCK 31 UNIT is operated by Arco Oil & Gas Co., Railroad Commission of Texas operator number 029340.
- Where is BLOCK 31 UNIT?
- BLOCK 31 UNIT is a Texas oil lease in Crane County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 00442.
- Is BLOCK 31 UNIT still producing?
- BLOCK 31 UNIT is currently producing. The most recent month of production reported to the Railroad Commission of Texas for BLOCK 31 UNIT is August 2026.
- How much has BLOCK 31 UNIT produced?
- BLOCK 31 UNIT has reported 15,156,233 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 330 wellbores.
- How much is BLOCK 31 UNIT worth?
- The remaining production from BLOCK 31 UNIT is estimated to be worth about $34.5M in total as of 26 August 2026, within a range of $28.6M to $40.4M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in BLOCK 31 UNIT is a fraction of it. The estimate fits an Arps decline curve to the production BLOCK 31 UNIT has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for BLOCK 31 UNIT is an estimate of value, not an offer and not an appraisal.
- How much income does BLOCK 31 UNIT generate in a year?
- BLOCK 31 UNIT is forecast to net about $8.0M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in BLOCK 31 UNIT receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Arco Oil & Gas Co. |
|---|---|
| Field | Block 31 (Devonian) |
| County | Crane County, Texas |
| RRC district | 08 |
| Lease number | 00442 |
| Wellbores | 330 |
| Reported production | 15,156,233 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $34.5M |
Where BLOCK 31 UNIT 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.