LEASES · O-13-29159 · OIL · DISTRICT 09
Mansfield
ReportingExtech Operating, LLC · Wise County · Gilley, W. (Atoka Congl.) field
Mansfield is an RRC oil lease (O-13-29159) in Wise County operated by Extech Operating, LLC, with 2 wells completed on it.
It has reported 24.1K barrels of oil and 757K mcf of gas since June 1996, last reporting volume in April 2026 (statewide data runs through April 2026).
The last 12 reported months total 645 barrels of oil, down 4% on the year before; the lease peaked at 806 barrels in July 1996.
4 operators have filed production on it, most recently Extech Operating, LLC since January 2020.
- 24.1K
- bbl oil, all reported
- 757K
- mcf gas incl. casinghead
- 645
- bbl oil, last 12 reported
- -4%
- vs the 12 before
- 2
- wells completed on it
- 806
- peak month, bbl (Jul 1996)
PDQ LEASE REPORTS · FIRST JUN 1996 · 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 645 · prior 12 671(-4%)
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 12,017 · prior 12 12,680(-5%)
Decline curve
None shown. Petrora fits an Arps curve only when the last ten years of oil reports follow one decline closely enough to project (R² of 0.7 or better over at least a year since the peak). This lease's recent history does not, so a projection would be a guess dressed as a number.
Who reported it
Each run of months one operator filed the production report, oldest first.
- Gonzenbach, Glen DJun 1996 → Aug 2007 · 135 mo
- Glen D. Gonzenbach, LLCSep 2007 → Dec 2016 · 112 mo
- Gonzenbach Oil & Gas, LLCJan 2017 → Dec 2019 · 36 mo
- Extech Operating, LLCJan 2020 → Jul 2026 · 79 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
2
wells completed on the lease
- Plugged
- 1
- Producing
- 1
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-13-29159, documented in the API reference.