GRAEF C 16-17

Oil · District 08 · Lease #39870

Operator: SHELL WESTERN E&P

Fields: PECOS (WOLFCAMP)

Cum Oil

10k BBL

Cum Gas

29k MCF

casinghead

Wells

1

Production

2009-04 — 2018-01

Peak Month

2010-07

Production History

Cum Oil: 10,054 BBL Cum Gas: 28,921 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

407 BBL/mo

Di (annual)

82.1%

b-factor

0.3

EUR

8,366 BBL

R-squared

0.640

type

hyperbolic

Operator History (from monthly production reports)

2015-01 — 2020-07 COG OPERATING LLC 67 mo

2012-10 — 2014-12 SHELL WESTERN E&P 27 mo

2009-04 — 2012-09 CHESAPEAKE OPERATING, INC. 42 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-389-32567	COG OPERATING LLC	1	20,000	2008-09-22