HASEL28 P1 UNIT

Oil · District 7C · Lease #19681

Operator: COG OPERATING LLC

Cum Oil

261k BBL

Cum Gas

1.2M MCF

casinghead

Wells

1

Production

2017-03 — 2026-04

Peak Month

2018-05

Production History

Cum Oil: 260,571 BBL Cum Gas: 1,198,186 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

10,480 BBL/mo

Di (annual)

58.7%

b-factor

0.1

EUR

238,190 BBL

R-squared

0.927

type

hyperbolic

Operator History (from monthly production reports)

2017-03 — 2026-07 COG OPERATING LLC 113 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2803AHCOG OPERATING LLC110,5002016-07-06