LEASES · O-1-11353 · OIL · DISTRICT 01
Tumlinson
ReportingMcDay Energy Corp. · Dimmit County · Blakeway (Olmos A) field
Tumlinson is an RRC oil lease (O-1-11353) in Dimmit County operated by Mcday Energy Corp., with 2 wells completed on it.
It has reported 13.4K barrels of oil and 32.4K mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 16 barrels of oil; the lease peaked at 1.4K barrels in June 2001.
12 operators have filed production on it, most recently Mcday Energy Corp. since January 2019.
- 13.4K
- bbl oil, all reported
- 32.4K
- mcf gas incl. casinghead
- 16
- bbl oil, last 12 reported
- —
- vs the 12 before
- 2
- wells completed on it
- 1.4K
- peak month, bbl (Jun 2001)
PDQ LEASE REPORTS · FIRST JAN 1993 · 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 16 · prior 12 15(+7%)
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 0 · prior 12 0
Decline curve
A MODEL FITTED TO THE REPORTS, NOT A REPORT
An Arps hyperbolic curve fitted to the 104 reporting months of oil since the peak in Apr 2017. 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.
- 79%
- first-year decline from the peak (nominal Di 216%)
- 0.4
- b factor (hyperbolic)
- 0.83
- fit R²
- 0
- 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 16 · prior 12 15(+7%)
Fitted hyperbolic curve from the Apr 2017 peak, dashed 24 months past the last report
| Projected month | Oct 2026 | Apr 2027 | Oct 2027 | Apr 2028 |
|---|---|---|---|---|
| On the curve, bbl per month | 1 | 1 | 1 | 1 |
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.
- Energy Development Corp.Jan 1993 → Jan 1993 · 1 mo
- Catarina Petroleum L. C.Feb 1993 → Jul 1998 · 66 mo
- Heartland Resources, Inc.Aug 1998 → Feb 1999 · 7 mo
- Carrizo Exploration, Inc.Mar 1999 → May 2006 · 87 mo
- TDW Exploration, LLCJun 2006 → Jan 2009 · 32 mo
- Anaconda Oil & GasFeb 2009 → Jul 2010 · 18 mo
- Texowa, LLCAug 2010 → Jul 2013 · 36 mo
- Hooper Oil & Gas, LLCAug 2013 → Nov 2015 · 28 mo
- Texowa, LLCDec 2015 → Nov 2016 · 12 mo
- Neorr, SteveDec 2016 → Jul 2018 · 20 mo
- TAM2 Squared Operating, LLCAug 2018 → Dec 2018 · 5 mo
- McDay Energy Corp.Jan 2019 → Jul 2026 · 91 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
2
wells completed on the lease
- Producing
- 2
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-1-11353, documented in the API reference.