CRX YBAR A

Oil · District 01 · Lease #21078

Operator: CASTLEROCK EF OPERATING LLC

Cum Oil

312k BBL

Cum Gas

330k MCF

casinghead

Wells

1

Production

2022-10 — 2026-04

Peak Month

2023-06

Production History

Cum Oil: 312,190 BBL Cum Gas: 330,444 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

15,676 BBL/mo

Di (annual)

63.8%

b-factor

0.1

EUR

327,626 BBL

R-squared

0.745

type

hyperbolic

Operator History (from monthly production reports)

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

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HCASTLEROCK EF OPERATING LLC214,0002022-08-22