NAIL -33-

Oil · District 08 · Lease #29780

Operator: VENCER ENERGY, LLC

Cum Oil

286k BBL

Cum Gas

751k MCF

casinghead

Wells

7

Production

1993-01 — 2026-03

Peak Month

1999-07

Production History

Cum Oil: 285,981 BBL Cum Gas: 751,123 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,519 BBL/mo

Di (annual)

7.1%

b-factor

0.0

EUR

248,460 BBL

R-squared

0.789

type

exponential

Operator History (from monthly production reports)

2024-01 — 2026-07 CIVITAS PERMIAN OPERATING, LLC 31 mo
2021-08 — 2023-12 VENCER ENERGY, LLC 29 mo
2013-12 — 2021-07 HUNT OIL COMPANY 92 mo
2002-07 — 2013-11 MERIT ENERGY COMPANY 137 mo
2001-07 — 2002-06 DEVON ENERGY PRODUCTION CO, L.P. 12 mo
1998-12 — 2001-06 CONCHO RESOURCES INC. 31 mo
1997-02 — 1998-11 COSTILLA ENERGY, INC. 22 mo
1993-01 — 1997-01 COSTILLA PETROLEUM CORPORATION 49 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8CIVITAS PERMIAN OPERATING, LLC19,5001999-05-05
7CIVITAS PERMIAN OPERATING, LLC110,0001996-10-15
4CIVITAS PERMIAN OPERATING, LLC19,7001985-12-06
3CIVITAS PERMIAN OPERATING, LLC19,7501985-09-24
6DIAMONDBACK E&P LLC19,7501985-09-24
5XDIAMONDBACK E&P LLC19,7001985-02-21
1CIVITAS PERMIAN OPERATING, LLC19,7001985-01-08