POWELL "21" A

Oil · District 7C · Lease #17550

Operator: COG OPERATING LLC

Cum Oil

163k BBL

Cum Gas

392k MCF

casinghead

Wells

2

Production

2011-08 — 2026-04

Peak Month

2014-03

Production History

Cum Oil: 163,321 BBL Cum Gas: 392,138 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,818 BBL/mo

Di (annual)

63.5%

b-factor

1.0

EUR

185,811 BBL

R-squared

0.887

type

hyperbolic

Operator History (from monthly production reports)

2011-08 — 2026-07 COG OPERATING LLC 180 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7COG OPERATING LLC210,6752012-10-11
15COG OPERATING LLC110,7002011-04-04