CRX YBAR B

Oil · District 01 · Lease #21058

Operator: CASTLEROCK EF OPERATING LLC

Cum Oil

330k BBL

Cum Gas

323k MCF

casinghead

Wells

1

Production

2022-10 — 2026-04

Peak Month

2023-04

Production History

Cum Oil: 329,733 BBL Cum Gas: 323,456 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

26,193 BBL/mo

Di (annual)

368.4%

b-factor

1.2

EUR

623,777 BBL

R-squared

0.835

type

hyperbolic

Operator History (from monthly production reports)

2022-10 — 2026-07 CASTLEROCK EF OPERATING LLC 46 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5HCASTLEROCK EF OPERATING LLC214,0002022-08-23