MCELROY RANCH CO. -F-

Oil · District 7C · Lease #2590

Operator: UMC PETROLEUM CORPORATION

Cum Oil

372k BBL

Cum Gas

5.4M MCF

casinghead

Wells

23

Production

1993-01 — 2026-04

Peak Month

1998-09

Production History

Cum Oil: 371,988 BBL Cum Gas: 5,385,658 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,921 BBL/mo

Di (annual)

20.3%

b-factor

0.3

EUR

317,854 BBL

R-squared

0.783

type

hyperbolic

Operator History (from monthly production reports)

2022-12 — 2026-07 DIAMONDBACK E&P LLC 44 mo
2019-07 — 2022-11 FIREBIRD ENERGY LLC 41 mo
2016-08 — 2019-06 FDL OPERATING, LLC 35 mo
2006-01 — 2016-07 DEVON ENERGY PRODUCTION CO, L.P. 127 mo
2003-09 — 2005-12 DEVON LOUISIANA CORPORATION 28 mo
1998-08 — 2003-08 OCEAN ENERGY, INC. 61 mo
1995-10 — 1998-07 UMC PETROLEUM CORPORATION 34 mo
1995-02 — 1995-09 PENNZOIL EXPLORATION & PROD. CO. 8 mo
1993-01 — 1995-01 PENNZOIL PETROLEUM COMPANY 25 mo

Wells (23)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
21DIAMONDBACK E&P LLC19,4502015-07-23
30HDIAMONDBACK E&P LLC316,7002013-05-01
31DDIAMONDBACK E&P LLC25,5002013-03-18
2DDIAMONDBACK E&P LLC19,6542013-02-12
13DIAMONDBACK E&P LLC19,9812009-05-20
10DIAMONDBACK E&P LLC29,6282003-03-04
25DIAMONDBACK E&P LLC29,7002000-08-29
16DIAMONDBACK E&P LLC29,7701998-08-11
27DIAMONDBACK E&P LLC110,0001998-05-13
26DIAMONDBACK E&P LLC110,0001998-03-26
5DIAMONDBACK E&P LLC19,7381994-04-19
22DIAMONDBACK E&P LLC19,9001980-05-22
1242-461-10039DIAMONDBACK E&P LLC------
1442-461-10032DIAMONDBACK E&P LLC------
1542-461-10159DIAMONDBACK E&P LLC------
18 L42-461-10192DIAMONDBACK E&P LLC------
242-461-10253DIAMONDBACK E&P LLC------
2042-461-10240DIAMONDBACK E&P LLC------
342-461-00686DIAMONDBACK E&P LLC------
442-461-00687DIAMONDBACK E&P LLC------
642-461-10091DIAMONDBACK E&P LLC------
842-461-10105DIAMONDBACK E&P LLC------
942-461-10009DIAMONDBACK E&P LLC------