BIG CHIEF
BIG CHIEF is a Texas oil lease in Reeves County, Railroad Commission district 08, operated by Cog Operating LLC. It has 34 wellbores on file with the Commission. Reported production runs from July 2012 to August 2026, totalling 8,845,120 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 $103.7M, with roughly $26.1M 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 35,727 barrels a month, about 1,051 per wellbore. Its strongest month on the record we hold was April 2023, at 116,311 barrels. In our own backtest, leases producing at this rate are forecast to within about 18% 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 BIG CHIEF
- Who operates BIG CHIEF?
- BIG CHIEF is operated by Cog Operating LLC, Railroad Commission of Texas operator number 166150.
- Where is BIG CHIEF?
- BIG CHIEF is a Texas oil lease in Reeves County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 44043.
- Is BIG CHIEF still producing?
- BIG CHIEF is currently producing. The most recent month of production reported to the Railroad Commission of Texas for BIG CHIEF is August 2026.
- How much has BIG CHIEF produced?
- BIG CHIEF has reported 8,845,120 barrels of oil (bbl) to the Railroad Commission of Texas between July 2012 and August 2026, from 34 wellbores.
- How much is BIG CHIEF worth?
- The remaining production from BIG CHIEF is estimated to be worth about $103.7M in total as of 26 August 2026, within a range of $85.1M to $122.4M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in BIG CHIEF is a fraction of it. The estimate fits an Arps decline curve to the production BIG CHIEF has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for BIG CHIEF is an estimate of value, not an offer and not an appraisal.
- How much income does BIG CHIEF generate in a year?
- BIG CHIEF is forecast to net about $26.1M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in BIG CHIEF receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Cog Operating LLC |
|---|---|
| Field | Hoefs T-K (Wolfcamp) |
| County | Reeves County, Texas |
| RRC district | 08 |
| Lease number | 44043 |
| Wellbores | 34 |
| Reported production | 8,845,120 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $103.7M |
Where BIG CHIEF 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.