Petrora

LEASES · O-11-67225 · OIL · DISTRICT 8A

South Mallet Unit

Reporting

Winn Operating, LLC · Cochran County and Hockley · Slaughter field

South Mallet Unit is an RRC oil lease (O-11-67225) in Cochran County operated by Winn Operating, LLC, with 144 wells completed on it.

It has reported 857K barrels of oil and 564K mcf of gas since April 1994, last reporting volume in April 2026 (statewide data runs through April 2026).

The last 12 reported months total 5.09K barrels of oil, down 21% on the year before; the lease peaked at 7.78K barrels in April 1994.

10 operators have filed production on it, most recently Winn Operating, LLC since March 2022.

857K
bbl oil, all reported
564K
mcf gas incl. casinghead
5.09K
bbl oil, last 12 reported
-21%
vs the 12 before
144
wells completed on it
7.78K
peak month, bbl (Apr 1994)

PDQ LEASE REPORTS · FIRST APR 1994 · 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 5,089 · prior 12 6,452(-21%)

05001K1.5K2017201820192020202120222023202420252026

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 7,179 · prior 12 4,494(+60%)

05001K2017201820192020202120222023202420252026

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.

  1. Texaco E & P Inc.Apr 1994 → Feb 1995 · 11 mo
  2. Apache CorporationMar 1995 → Apr 1999 · 50 mo
  3. Scythian, Ltd.May 1999 → Sep 2003 · 53 mo
  4. Shenandoah Petroleum CorporationOct 2003 → Dec 2004 · 15 mo
  5. Petrosource Production Co. L.P.Jan 2005 → Nov 2007 · 35 mo
  6. Petrosource Production Co., LLCDec 2007 → Mar 2008 · 4 mo
  7. Sandridge Tertiary, LLCApr 2008 → Jul 2012 · 52 mo
  8. Trinity EOR, LLCAug 2012 → Nov 2013 · 16 mo
  9. Scout Energy Management LLCDec 2013 → Feb 2022 · 99 mo
  10. Winn Operating, LLCMar 2022 → Jul 2026 · 53 mo

Wells on the lease

FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL

144

wells completed on the lease

Plugged
60
Shut In
55
Producing
18
Water Supply
6
Injection
5

Operates them now

Texaco E & P Inc.
71
Winn Operating LLC
66
Winn Operating, LLC
7

Newest permits

All 144 wells, searchable →

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-11-67225, documented in the API reference.