HASEL15

Oil · District 7C · Lease #17962

Operator: COG OPERATING LLC

Cum Oil

49k BBL

Cum Gas

287k MCF

casinghead

Wells

2

Production

2011-06 — 2026-04

Peak Month

2012-11

Production History

Cum Oil: 48,569 BBL Cum Gas: 287,486 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,213 BBL/mo

Di (annual)

76.6%

b-factor

0.8

EUR

54,957 BBL

R-squared

0.611

type

hyperbolic

Operator History (from monthly production reports)

2011-06 — 2026-07 COG OPERATING LLC 182 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1COG OPERATING LLC310,8002012-08-09
2COG OPERATING LLC110,8002012-01-30