AMACKER 66B

Oil · District 7C · Lease #20817

Operator: COG OPERATING LLC

Cum Oil

390k BBL

Cum Gas

2.7M MCF

casinghead

Wells

1

Production

2019-06 — 2026-04

Peak Month

2020-04

Production History

Cum Oil: 390,013 BBL Cum Gas: 2,686,496 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

30,051 BBL/mo

Di (annual)

300.1%

b-factor

0.9

EUR

506,107 BBL

R-squared

0.936

type

hyperbolic

Operator History (from monthly production reports)

2019-06 — 2026-07 COG OPERATING LLC 86 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6607BHCOG OPERATING LLC111,0002019-01-24