OPPENHEIMER-CALVERT UNIT

Oil · District 01 · Lease #14398

Operator: DALE OPERATING COMPANY

Cum Oil

22k BBL

Cum Gas

354k MCF

casinghead

Wells

1

Production

2002-01 — 2017-02

Peak Month

2002-10

Production History

Cum Oil: 21,678 BBL Cum Gas: 353,734 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

228 BBL/mo

Di (annual)

12.3%

b-factor

0.0

EUR

22,213 BBL

R-squared

0.362

type

exponential

Operator History (from monthly production reports)

2012-05 — 2025-07 BLACKBRUSH O & G, LLC 159 mo
2006-02 — 2012-04 BLACKBRUSH O & G, INC. 75 mo
2002-01 — 2006-01 DALE OPERATING COMPANY 49 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1BLACKBRUSH O & G LLC36,3002001-09-13