Petrora

LEASES · O-9-2590 · OIL · DISTRICT 7C

McElroy Ranch Co. -F-

Reporting

Diamondback E&P LLC · Upton County · Block 42 (Penn) field

Mcelroy Ranch CO. -F- is an RRC oil lease (O-9-2590) in Upton County operated by Diamondback E&P LLC, with 23 wells completed on it.

It has reported 372K barrels of oil and 5.39M mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).

The last 12 reported months total 3.56K barrels of oil, up 142% on the year before; the lease peaked at 7.07K barrels in January 1994.

9 operators have filed production on it, most recently Diamondback E&P LLC since December 2022.

372K
bbl oil, all reported
5.39M
mcf gas incl. casinghead
3.56K
bbl oil, last 12 reported
+142%
vs the 12 before
23
wells completed on it
7.07K
peak month, bbl (Jan 1994)

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 3,560 · prior 12 1,472(+142%)

02004006002017201820192020202120222023202420252026

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 77,914 · prior 12 32,450(+140%)

05K10K2017201820192020202120222023202420252026

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. Pennzoil Petroleum CompanyJan 1993 → Jan 1995 · 25 mo
  2. Pennzoil Exploration & Prod. Co.Feb 1995 → Sep 1995 · 8 mo
  3. Umc Petroleum CorporationOct 1995 → Jul 1998 · 34 mo
  4. Ocean Energy, Inc.Aug 1998 → Aug 2003 · 61 mo
  5. Devon Louisiana CorporationSep 2003 → Dec 2005 · 28 mo
  6. Devon Energy Production Co, L.P.Jan 2006 → Jul 2016 · 127 mo
  7. FDL Operating, LLCAug 2016 → Jun 2019 · 35 mo
  8. Firebird Energy LLCJul 2019 → Nov 2022 · 41 mo
  9. Diamondback E&P LLCDec 2022 → Jul 2026 · 44 mo

Wells on the lease

FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL

23

wells completed on the lease

Plugged
12
NO Type on File
10
Shut IN
1

Operates them now

Diamondback E&P LLC
13
FDL Operating LLC
3
Devon Energy Production Co L.P.
2
Firebird Energy LLC
2
Gulf Oil Corp.
1

Newest permits

All 23 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-9-2590, documented in the API reference.