HALEY, C. B. -A-

Oil · District 08 · Lease #39579

Operator: COG OPERATING LLC

Cum Oil

138k BBL

Cum Gas

278k MCF

casinghead

Wells

4

Production

2009-04 — 2024-10

Peak Month

2015-02

Production History

Cum Oil: 138,138 BBL Cum Gas: 278,328 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,924 BBL/mo

Di (annual)

122.5%

b-factor

0.7

EUR

50,403 BBL

R-squared

0.552

type

hyperbolic

Operator History (from monthly production reports)

2009-04 — 2026-07 COG OPERATING LLC 208 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11COG OPERATING LLC111,5002013-01-15
5COG OPERATING LLC111,5002010-01-14
4COG OPERATING LLC311,0301995-07-21
2COG OPERATING LLC110,5351984-09-19