MARY A UNIT

Oil · District 7C · Lease #19209

Operator: COG OPERATING LLC

Cum Oil

390k BBL

Cum Gas

1.4M MCF

casinghead

Wells

1

Production

2015-08 — 2026-04

Peak Month

2016-04

Production History

Cum Oil: 390,105 BBL Cum Gas: 1,411,993 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

13,084 BBL/mo

Di (annual)

88.2%

b-factor

0.7

EUR

458,825 BBL

R-squared

0.708

type

hyperbolic

Operator History (from monthly production reports)

2015-08 — 2026-07 COG OPERATING LLC 132 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
32HCOG OPERATING LLC112,0002014-12-08