OTB O'BRIEN 43
OTB O'BRIEN 43 is a Texas oil lease in Martin County, Railroad Commission district 08, operated by Mak-J Energy Partners(TX),Ltd. It has 7 wellbores on file with the Commission. Reported production runs from January 2009 to August 2026, totalling 262,550 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 $1.3M, with roughly $224K 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 302 barrels a month, about 43 per wellbore. Its strongest month on the record we hold was June 2019, at 2,120 barrels. In our own backtest, leases producing at this rate are forecast to within about 22% 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 OTB O'BRIEN 43
- Who operates OTB O'BRIEN 43?
- OTB O'BRIEN 43 is operated by Mak-J Energy Partners(TX),Ltd., Railroad Commission of Texas operator number 522988.
- Where is OTB O'BRIEN 43?
- OTB O'BRIEN 43 is a Texas oil lease in Martin County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 39301.
- Is OTB O'BRIEN 43 still producing?
- OTB O'BRIEN 43 is currently producing. The most recent month of production reported to the Railroad Commission of Texas for OTB O'BRIEN 43 is August 2026.
- How much has OTB O'BRIEN 43 produced?
- OTB O'BRIEN 43 has reported 262,550 barrels of oil (bbl) to the Railroad Commission of Texas between January 2009 and August 2026, from 7 wellbores.
- How much is OTB O'BRIEN 43 worth?
- The remaining production from OTB O'BRIEN 43 is estimated to be worth about $1.3M in total as of 27 August 2026, within a range of $1.0M to $1.6M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in OTB O'BRIEN 43 is a fraction of it. The estimate fits an Arps decline curve to the production OTB O'BRIEN 43 has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for OTB O'BRIEN 43 is an estimate of value, not an offer and not an appraisal.
- How much income does OTB O'BRIEN 43 generate in a year?
- OTB O'BRIEN 43 is forecast to net about $224K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in OTB O'BRIEN 43 receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Mak-J Energy Partners(TX),Ltd. |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Martin County, Texas |
| RRC district | 08 |
| Lease number | 39301 |
| Wellbores | 7 |
| Reported production | 262,550 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $1.3M |
Where OTB O'BRIEN 43 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.