UNIVERSITY 8-13

Oil · District 08 · Lease #38791

Operator: THREE RIVERS OPERATING CO LLC

Fields: SPRABERRY (TREND AREA)

Cum Oil

24k BBL

Cum Gas

57k MCF

casinghead

Wells

1

Production

2008-05 — 2018-07

Peak Month

2009-04

Production History

Cum Oil: 24,182 BBL Cum Gas: 57,264 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

801 BBL/mo

Di (annual)

115.6%

b-factor

0.9

EUR

29,664 BBL

R-squared

0.348

type

hyperbolic

Operator History (from monthly production reports)

2012-08 — 2020-12 COG OPERATING LLC 101 mo

2011-01 — 2012-07 THREE RIVERS OPERATING CO LLC 19 mo

2008-05 — 2010-12 SAMSON LONE STAR, LLC 32 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-003-40345	COG OPERATING LLC	1	10,400	2007-12-21