BRISCOE "E" - A

Oil · District 04 · Lease #13286

Operator: ST. MARY LAND & EXPLORATION CO.

Fields: GOLD RIVER, NORTH (OLMOS)

Cum Oil

64k BBL

Cum Gas

174k MCF

casinghead

Wells

2

Production

2004-11 — 2014-04

Peak Month

2008-11

Production History

Cum Oil: 63,630 BBL Cum Gas: 174,077 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,061 BBL/mo

Di (annual)

24.1%

b-factor

0.0

EUR

52,786 BBL

R-squared

0.585

type

exponential

Operator History (from monthly production reports)

2010-07 — 2014-10 SM ENERGY COMPANY 52 mo

2007-10 — 2010-06 ST. MARY LAND & EXPLORATION CO. 33 mo

2006-10 — 2007-09 ROCKFORD ENERGY PARTNERS II, LLC 12 mo

2004-11 — 2006-09 HUBER ENERGY L.P. 23 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1070	42-479-39712	SM ENERGY COMPANY	1	4,700	2006-12-01
212	42-479-38874	SM ENERGY COMPANY	2	6,300	2004-09-30