WELCH

Oil · District 7C · Lease #7158

Operator: TAMARACK PETROLEUM COMPANY, INC.

Cum Oil

86k BBL

Cum Gas

191k MCF

casinghead

Wells

2

Production

1993-01 — 2026-03

Peak Month

2007-08

Production History

Cum Oil: 86,221 BBL Cum Gas: 191,324 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

670 BBL/mo

Di (annual)

17.5%

b-factor

0.2

EUR

56,582 BBL

R-squared

0.587

type

hyperbolic

Operator History (from monthly production reports)

2023-12 — 2026-07 CIVITAS PERMIAN OPERATING, LLC 32 mo
2020-11 — 2023-11 HIBERNIA RESOURCES III, LLC 37 mo
2010-12 — 2020-10 APACHE CORPORATION 119 mo
2007-12 — 2010-11 MARINER ENERGY, INC. 36 mo
1993-01 — 2007-11 TAMARACK PETROLEUM COMPANY, INC. 179 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2TMCIVITAS PERMIAN OPERATING, LLC29,1002007-03-15
142-383-30816CIVITAS PERMIAN OPERATING, LLC------