AMACKER 66E

Oil · District 7C · Lease #20851

Operator: COG OPERATING LLC

Cum Oil

417k BBL

Cum Gas

2.4M MCF

casinghead

Wells

1

Production

2019-07 — 2026-04

Peak Month

2020-04

Production History

Cum Oil: 416,632 BBL Cum Gas: 2,389,901 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

32,511 BBL/mo

Di (annual)

258.1%

b-factor

0.8

EUR

519,863 BBL

R-squared

0.961

type

hyperbolic

Operator History (from monthly production reports)

2019-07 — 2026-07 COG OPERATING LLC 85 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6605BHCOG OPERATING LLC111,0002019-01-25