NANCY

Oil · District 7C · Lease #16957

Operator: COG OPERATING LLC

Cum Oil

24k BBL

Cum Gas

52k MCF

casinghead

Wells

1

Production

2009-06 — 2015-06

Peak Month

2009-11

Production History

Cum Oil: 23,702 BBL Cum Gas: 52,204 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,182 BBL/mo

Di (annual)

71.7%

b-factor

0.1

EUR

21,947 BBL

R-squared

0.856

type

hyperbolic

Operator History (from monthly production reports)

2009-06 — 2015-11 COG OPERATING LLC 78 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4901COG OPERATING LLC110,8002009-03-31