LEASES · O-11-68668 · OIL · DISTRICT 8A
Somervell 6666
ReportingBurnett Oil Co., Inc. · King County · Legacy (Tannehill Sand) field
Somervell 6666 is an RRC oil lease (O-11-68668) in King County operated by Burnett Oil CO., Inc., with 6 wells completed on it.
It has reported 432K barrels of oil and 6.75K mcf of gas since March 2004, last reporting volume in June 2025 (statewide data runs through April 2026).
The last 12 reported months total 1.23K barrels of oil, down 50% on the year before; the lease peaked at 6.95K barrels in April 2005.
2 operators have filed production on it, most recently Burnett Oil CO., Inc. since January 2025.
- 432K
- bbl oil, all reported
- 6.75K
- mcf gas incl. casinghead
- 1.23K
- bbl oil, last 12 reported
- -50%
- vs the 12 before
- 6
- wells completed on it
- 6.95K
- peak month, bbl (Apr 2005)
PDQ LEASE REPORTS · FIRST MAR 2004 · LAST VOLUME JUN 2025 · 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 1,229 · prior 12 2,477(-50%)
Gas by month
Gas-well gas plus casinghead gas, mcf. On an oil lease all gas is reported as casinghead. The latest months are revised upward as late reports arrive.
Last 12 months 20 · prior 12 120(-83%)
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 Mar 2019. 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.
- 29%
- first-year decline from the peak (nominal Di 35%)
- 0.0
- b factor (exponential)
- 0.87
- fit R²
- 4.29K
- 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 1,229 · prior 12 2,477(-50%)
Fitted exponential curve from the Mar 2019 peak, dashed 24 months past the last report
| Projected month | Apr 2026 | Oct 2026 | Apr 2027 | Oct 2027 |
|---|---|---|---|---|
| On the curve, bbl per month | 105 | 88 | 74 | 62 |
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.
- Medders Oil Company, Inc.Mar 2004 → Dec 2024 · 250 mo
- Burnett Oil Co., Inc.Jan 2025 → Oct 2025 · 10 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
6
wells completed on the lease
- Not on Schedule
- 6
Operates them now
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-11-68668, documented in the API reference.