SOUTHWEST ANDREWS UNIT
SOUTHWEST ANDREWS UNIT is a Texas oil lease in Andrews County, Railroad Commission district 08, operated by Union Oil Company Of California. It has 37 wellbores on file with the Commission. Reported production runs from December 1997 to August 2026, totalling 2,479,811 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 $12.1M, with roughly $2.7M 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 4,233 barrels a month, about 114 per wellbore. Its strongest month on the record we hold was May 2023, at 6,572 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 SOUTHWEST ANDREWS UNIT
- Who operates SOUTHWEST ANDREWS UNIT?
- SOUTHWEST ANDREWS UNIT is operated by Union Oil Company Of California, Railroad Commission of Texas operator number 876520.
- Where is SOUTHWEST ANDREWS UNIT?
- SOUTHWEST ANDREWS UNIT is a Texas oil lease in Andrews County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 35543.
- Is SOUTHWEST ANDREWS UNIT still producing?
- SOUTHWEST ANDREWS UNIT is currently producing. The most recent month of production reported to the Railroad Commission of Texas for SOUTHWEST ANDREWS UNIT is August 2026.
- How much has SOUTHWEST ANDREWS UNIT produced?
- SOUTHWEST ANDREWS UNIT has reported 2,479,811 barrels of oil (bbl) to the Railroad Commission of Texas between December 1997 and August 2026, from 37 wellbores.
- How much is SOUTHWEST ANDREWS UNIT worth?
- The remaining production from SOUTHWEST ANDREWS UNIT is estimated to be worth about $12.1M in total as of 27 August 2026, within a range of $10.0M to $14.1M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SOUTHWEST ANDREWS UNIT is a fraction of it. The estimate fits an Arps decline curve to the production SOUTHWEST ANDREWS UNIT has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SOUTHWEST ANDREWS UNIT is an estimate of value, not an offer and not an appraisal.
- How much income does SOUTHWEST ANDREWS UNIT generate in a year?
- SOUTHWEST ANDREWS UNIT is forecast to net about $2.7M across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in SOUTHWEST ANDREWS UNIT receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Union Oil Company Of California |
|---|---|
| Field | Andrews (Wolfcamp-Penn.) |
| County | Andrews County, Texas |
| RRC district | 08 |
| Lease number | 35543 |
| Wellbores | 37 |
| Reported production | 2,479,811 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $12.1M |
Where SOUTHWEST ANDREWS 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.