LEASES · O-1-12309 · OIL · DISTRICT 01
Mobil Wheeler
ReportingGTG Operating, LLC · McMullen County · A.W.P. (Olmos) field
Mobil Wheeler is an RRC oil lease (O-1-12309) in Mcmullen County operated by Gtg Operating, LLC, with 5 wells completed on it.
It has reported 97.9K barrels of oil and 782K mcf of gas since January 1993, last reporting volume in February 2026 (statewide data runs through April 2026).
The last 12 reported months total 920 barrels of oil, down 33% on the year before; the lease peaked at 2.65K barrels in April 2010.
9 operators have filed production on it, most recently Gtg Operating, LLC since May 2020.
- 97.9K
- bbl oil, all reported
- 782K
- mcf gas incl. casinghead
- 920
- bbl oil, last 12 reported
- -33%
- vs the 12 before
- 5
- wells completed on it
- 2.65K
- peak month, bbl (Apr 2010)
PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME FEB 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 920 · prior 12 1,365(-33%)
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 7,323 · prior 12 9,333(-22%)
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.
- Miller, W. C. Operating CompanyJan 1993 → Jan 1994 · 13 mo
- Wheeler, Clifton C.Feb 1994 → Aug 1994 · 7 mo
- Patterson, Ben M., Jr.Sep 1994 → Jan 1995 · 5 mo
- Welhausen Operating Co., Inc.Feb 1995 → Oct 2001 · 81 mo
- Welhausen Operating Company, LPNov 2001 → Dec 2011 · 122 mo
- Layline Petroleum I, LLCJan 2012 → May 2013 · 17 mo
- Wapiti Operating, LLCJun 2013 → Mar 2015 · 22 mo
- Clearly Petroleum, LLCApr 2015 → Apr 2020 · 61 mo
- GTG Operating, LLCMay 2020 → Jul 2026 · 75 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
5
wells completed on the lease
- Producing
- 5
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-1-12309, documented in the API reference.