PIERCE ESTATE

Oil · District 03 · Lease #16436

Operator: VIPER S.W.D., LLC

Fields: B U RANCH (SEG C MARG.)

Cum Oil

80k BBL

Cum Gas

271 MCF

casinghead

Wells

1

Production

1993-01 — 2026-04

Peak Month

2005-06

Production History

Cum Oil: 80,217 BBL Cum Gas: 271 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

430 BBL/mo

Di (annual)

8.9%

b-factor

0.0

EUR

57,236 BBL

R-squared

0.504

type

exponential

Operator History (from monthly production reports)

2006-08 — 2026-07 VIPER S.W.D., LLC 240 mo

2005-04 — 2006-07 VIPER S.W.D. LLC 16 mo

2004-03 — 2005-03 R & S ENERGY COMPANY 13 mo

1994-12 — 2004-02 RAYALTO OIL & GAS, INC. 111 mo

1993-01 — 1994-11 B & M OPERATING CO., INC. 23 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
3	42-481-32435	VIPER S.W.D., LLC	1	5,450	1982-12-21