LEASES · O-4-12145 · OIL · DISTRICT 04
Welder, J.F. Unit
Reporting84 Energy LLC · San Patricio County · Odem (Massive Frio) field
Welder, J.F. Unit is an RRC oil lease (O-4-12145) in San Patricio County operated by 84 Energy LLC, with 30 wells completed on it.
It has reported 616K barrels of oil and 7.33M mcf of gas since January 1993, last reporting volume in August 2025 (statewide data runs through April 2026).
The last 12 reported months total 75 barrels of oil, down 97% on the year before; the lease peaked at 12.1K barrels in March 1993.
9 operators have filed production on it, most recently 84 Energy LLC since January 2025.
- 616K
- bbl oil, all reported
- 7.33M
- mcf gas incl. casinghead
- 75
- bbl oil, last 12 reported
- -97%
- vs the 12 before
- 30
- wells completed on it
- 12.1K
- peak month, bbl (Mar 1993)
PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME AUG 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 75 · prior 12 2,438(-97%)
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 21,442(-100%)
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.
- Texaco E & P Inc.Jan 1993 → Feb 1995 · 26 mo
- Smith Production Inc.Mar 1995 → Apr 1999 · 50 mo
- Energen Resources CorporationMay 1999 → Aug 2003 · 52 mo
- Aroc (Texas) Inc.Sep 2003 → Feb 2005 · 18 mo
- Southern Bay Operating, L.L.C.Mar 2005 → Jun 2013 · 100 mo
- HK Energy Operating, LLCJul 2013 → Oct 2013 · 4 mo
- Wagner Oil CompanyNov 2013 → Jul 2020 · 81 mo
- GTG Operating, LLCAug 2020 → Dec 2024 · 53 mo
- 84 Energy LLCJan 2025 → Jul 2026 · 19 mo
Wells on the lease
FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL
30
wells completed on the lease
- NO Type on File
- 23
- Plugged
- 6
- Partial Plug
- 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-4-12145, documented in the API reference.