ZR UNIT "D"

Oil · District 01 · Lease #14217

Operator: VARAS ENERGY OPERATING COMPANY,

Cum Oil

73k BBL

Cum Gas

413k MCF

casinghead

Wells

2

Production

1998-09 — 2026-04

Peak Month

2006-01

Production History

Cum Oil: 72,614 BBL Cum Gas: 413,172 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,116 BBL/mo

Di (annual)

66.0%

b-factor

0.6

EUR

44,010 BBL

R-squared

0.675

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 VARAS ENERGY OPERATING COMPANY, 19 mo
2018-01 — 2024-12 EL DORADO GAS & OIL, INC. 84 mo
2017-07 — 2017-12 SILVERBOW RESOURCES OPER, LLC 6 mo
2006-01 — 2017-06 SWIFT ENERGY OPERATING, LLC 138 mo
1998-09 — 2005-12 SWIFT ENERGY COMPANY 88 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7VARAS ENERGY OPERATING COMPANY,111,0001997-10-31
8VARAS ENERGY OPERATING COMPANY,111,0001997-10-31