STO SEC 10

Oil · District 08 · Lease #43365

Operator: RSP PERMIAN, LLC

Fields: SPRABERRY (TREND AREA)

Cum Oil

34k BBL

Cum Gas

34k MCF

casinghead

Wells

1

Production

2012-07 — 2018-01

Peak Month

2012-09

Production History

Cum Oil: 34,488 BBL Cum Gas: 33,817 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,202 BBL/mo

Di (annual)

41.2%

b-factor

0.0

EUR

34,982 BBL

R-squared

0.730

type

exponential

Operator History (from monthly production reports)

2018-08 — 2021-01 COG OPERATING LLC 30 mo

2013-09 — 2018-07 RSP PERMIAN, LLC 59 mo

2012-07 — 2013-08 E.G.L. RESOURCES, INC. 14 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1009	42-329-37745	COG OPERATING LLC	1	12,000	2011-11-21