HALEY, J. F.

Oil · District 08 · Lease #39580

Operator: COG OPERATING LLC

Cum Oil

124k BBL

Cum Gas

294k MCF

casinghead

Wells

4

Production

2009-04 — 2025-04

Peak Month

2011-07

Production History

Cum Oil: 124,374 BBL Cum Gas: 293,983 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,674 BBL/mo

Di (annual)

31.0%

b-factor

0.1

EUR

115,011 BBL

R-squared

0.801

type

hyperbolic

Operator History (from monthly production reports)

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

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5COG OPERATING LLC112,0002011-11-21
3COG OPERATING LLC112,0002010-03-22
1COG OPERATING LLC210,5001994-02-16
2COG OPERATING LLC110,5381985-02-27