NEAL RANCH '77' AB UNIT

Oil · District 7C · Lease #18974

Operator: COG OPERATING LLC

Cum Oil

250k BBL

Cum Gas

1.7M MCF

casinghead

Wells

1

Production

2015-03 — 2026-04

Peak Month

2015-05

Production History

Cum Oil: 250,095 BBL Cum Gas: 1,686,094 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

11,507 BBL/mo

Di (annual)

166.9%

b-factor

0.8

EUR

269,668 BBL

R-squared

0.909

type

hyperbolic

Operator History (from monthly production reports)

2015-03 — 2026-07 COG OPERATING LLC 137 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
31HCOG OPERATING LLC112,0002014-08-21