BRISCOE "E"

Oil · District 04 · Lease #13329

Operator: ST. MARY LAND & EXPLORATION CO.

Fields: GOLD RIVER, NORTH (OLMOS)

Cum Oil

21k BBL

Cum Gas

227k MCF

casinghead

Wells

3

Production

2005-03 — 2014-04

Peak Month

2005-05

Production History

Cum Oil: 20,500 BBL Cum Gas: 227,241 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,144 BBL/mo

Di (annual)

76.3%

b-factor

0.0

EUR

17,983 BBL

R-squared

0.764

type

exponential

Operator History (from monthly production reports)

2010-07 — 2014-09 SM ENERGY COMPANY 51 mo

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

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

2005-03 — 2006-09 HUBER ENERGY L.P. 19 mo

Wells (3)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1067	42-479-39986	SM ENERGY COMPANY	2	5,010	2007-11-16
304	42-479-39592	SM ENERGY COMPANY	1	4,600	2006-07-26
224	42-479-38968	SM ENERGY COMPANY	1	6,000	2005-01-10