AMACKER 66I

Oil · District 7C · Lease #21396

Operator: COG OPERATING LLC

Cum Oil

502k BBL

Cum Gas

964k MCF

casinghead

Wells

1

Production

2021-09 — 2026-04

Peak Month

2021-11

Production History

Cum Oil: 502,117 BBL Cum Gas: 963,544 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

37,585 BBL/mo

Di (annual)

766.2%

b-factor

1.9

EUR

1,421,106 BBL

R-squared

0.937

type

hyperbolic

Operator History (from monthly production reports)

2021-09 — 2026-07 COG OPERATING LLC 59 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6611LHCOG OPERATING LLC212,0002020-02-03