LEASES · O-11-69299 · OIL · DISTRICT 8A
Langford 419
ReportingSouthwest Royalties, Inc. · Yoakum County · Block D, South (Devonian) field
Langford 419 is an RRC oil lease (O-11-69299) in Yoakum County operated by Southwest Royalties, Inc., with one well completed on it.
It has reported 643K barrels of oil since August 2008, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 45.8K barrels of oil, down 11% on the year before; the lease peaked at 6.89K barrels in January 2020.
4 operators have filed production on it, most recently Southwest Royalties, Inc. since October 2020.
- 643K
- bbl oil, all reported
- 0
- mcf gas incl. casinghead
- 45.8K
- bbl oil, last 12 reported
- -11%
- vs the 12 before
- 1
- wells completed on it
- 6.89K
- peak month, bbl (Jan 2020)
PDQ LEASE REPORTS · FIRST AUG 2008 · LAST VOLUME APR 2026 · STATEWIDE DATA THROUGH APR 2026
Oil by month
Barrels reported on Form PR for the whole lease. The latest months are revised upward as late reports arrive.
Last 12 months 45,818 · prior 12 51,262(-11%)
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps exponential curve fitted to the 76 reporting months of oil since the peak in Jan 2020. The dashed line below is that curve, drawn over the months it was fitted to and then 24 months past the last report; where it parts from the columns is where the model stops describing the lease. It describes the trend of past reports. It does not know about recompletions, shut-ins, or new wells, and it is shown only when the lease reported within the last year and the curve explains most of the history.
- 8%
- first-year decline from the peak (nominal Di 8%)
- 0.0
- b factor (exponential)
- 0.72
- fit R²
- 557K
- bbl remaining on the curve, to 1 per month
Oil, barrels reported months since the peak, with the fitted curve and its projection
Last 12 months 45,818 · prior 12 51,262(-11%)
Fitted exponential curve from the Jan 2020 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 3,700 | 3,552 | 3,410 | 3,274 |
Quoting a projected figure as if it were reported would be wrong; the reported figures are the ones in the charts and the table view. How production is reported →
Who reported it
Each run of months one operator filed the production report, oldest first.
- Cobra Oil & Gas CorporationAug 2008 → May 2010 · 22 mo
- Blue Ridge Resources, LLCJun 2010 → Aug 2013 · 39 mo
- Desert Production, Inc.Sep 2013 → Sep 2020 · 85 mo
- Southwest Royalties, Inc.Oct 2020 → Jul 2026 · 70 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
About this data
Monthly oil, gas, and casinghead from the RRC PDQ production dump, which lags the reporting month by two to three months; figures shown through Apr 2026. Wells from completion reports; operator runs from who filed each month's report.
Developers: this page as JSON is GET /v1/data/leases/tx/o-11-69299, documented in the API reference.