COX TRUST UNIT

Oil · District 03 · Lease #23510

Operator: UNION PACIFIC RESOURCES COMPANY

Cum Oil

39k BBL

Cum Gas

26k MCF

casinghead

Wells

1

Production

1997-09 — 1998-06

Peak Month

1997-11

Production History

Cum Oil: 38,584 BBL Cum Gas: 25,990 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,554 BBL/mo

Di (annual)

226.2%

b-factor

0.0

EUR

34,869 BBL

R-squared

0.545

type

exponential

Operator History (from monthly production reports)

2023-12 — 2026-07 MAGNOLIA OIL & GAS OPERATING LLC 32 mo
2021-12 — 2023-11 LRR PECOS VALLEY, LLC 24 mo
2016-09 — 2021-11 TREADSTONE ENERGY PRTNR OP, LLC 63 mo
2013-01 — 2016-08 ANADARKO E&P ONSHORE LLC 44 mo
2002-12 — 2012-12 ANADARKO E&P COMPANY LP 121 mo
2001-02 — 2002-11 RME PETROLEUM COMPANY 22 mo
1997-09 — 2001-01 UNION PACIFIC RESOURCES COMPANY 41 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1MAGNOLIA OIL & GAS OPERATING LLC16,7001997-08-05