WINDHAM

Oil · District 7C · Lease #18392

Operator: COG OPERATING LLC

Cum Oil

69k BBL

Cum Gas

400k MCF

casinghead

Wells

1

Production

2013-11 — 2025-10

Peak Month

2014-01

Production History

Cum Oil: 68,836 BBL Cum Gas: 400,015 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,118 BBL/mo

Di (annual)

71.1%

b-factor

0.5

EUR

67,718 BBL

R-squared

0.755

type

hyperbolic

Operator History (from monthly production reports)

2013-11 — 2026-07 COG OPERATING LLC 153 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5COG OPERATING LLC112,0002013-07-08