< leases

UNIVERSITY -5-

Oil · District 08 · Lease #9082

Operator: SUNDOWN ENERGY LP

Fields: MAGUTEX (DEVONIAN)

Cum Oil

206k BBL

Cum Gas

49k MCF

casinghead

Wells

3

Production

1993-01 — 2025-12

Peak Month

1993-05

Production History

Cum Oil: 205,944 BBL Cum Gas: 48,652 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,234 BBL/mo

Di (annual)

7.8%

b-factor

0.0

EUR

186,656 BBL

R-squared

0.489

type

exponential

Operator History (from monthly production reports)

2023-06 — 2026-07 OVINTIV USA INC. 38 mo
2022-07 — 2023-05 PIEDRA OPERATING, LLC 11 mo
2021-05 — 2022-06 GRAMA OPERATING, LLC 14 mo
2005-02 — 2021-04 SUNDOWN ENERGY LP 195 mo
2002-07 — 2005-01 JETTA OPERATING COMPANY, INC. 31 mo
2000-04 — 2002-06 DEVON ENERGY PRODUCTION CO, L.P. 27 mo
1993-01 — 2000-03 DEVON ENERGY CORPORATION(NEVADA) 87 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2R42-003-00446OVINTIV USA INC.214,0002025-07-18
342-003-00297ATLANTIC RICHFIELD CO.------
4 L42-003-00313ARCO OIL & GAS CO.------