ECHO B UNIT

Oil · District 08 · Lease #57210

Operator: COG OPERATING LLC

Cum Oil

816k BBL

Cum Gas

1.4M MCF

casinghead

Wells

2

Production

2021-10 — 2026-04

Peak Month

2021-12

Production History

Cum Oil: 816,220 BBL Cum Gas: 1,375,177 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

25,409 BBL/mo

Di (annual)

102.3%

b-factor

2.0

EUR

2,730,855 BBL

R-squared

0.590

type

hyperbolic

Operator History (from monthly production reports)

2021-10 — 2026-07 COG OPERATING LLC 58 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2204HRCOG OPERATING LLC212,9002021-07-22
2203HCOG OPERATING LLC212,9002019-08-13