COFFIELD -E-

Oil · District 03 · Lease #10227

Operator: WATER WORKS ENGINEERING, INC.

Fields: CHRIESMAN

Cum Oil

45k BBL

Cum Gas

125k MCF

casinghead

Wells

3

Production

1993-01 — 2026-04

Peak Month

2008-03

Production History

Cum Oil: 44,555 BBL Cum Gas: 125,340 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

183 BBL/mo

Di (annual)

4.9%

b-factor

0.0

EUR

40,744 BBL

R-squared

0.387

type

exponential

Operator History (from monthly production reports)

2025-02 — 2026-07 RUSK ENERGY OPERATING LLC 18 mo
2010-03 — 2025-01 VICEROY PETROLEUM, LP 179 mo
2007-11 — 2010-02 VICEROY PETROLEUM GP, LLC 28 mo
1997-12 — 2007-10 FERGUSON-BURNS LEASING CO. 119 mo
1993-12 — 1997-11 WATER WORKS ENGINEERING, INC. 48 mo
1993-01 — 1993-11 AIM CONSULTANTS INC. 11 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3RUSK ENERGY OPERATING LLC13,7001982-12-31
142-051-30047RUSK ENERGY OPERATING LLC------
242-051-30048RUSK ENERGY OPERATING LLC------