BOX HEIRS

Oil · District 09 · Lease #21614

Operator: ECHO PRODUCTION, INC.

Fields: BRYSON, EAST

Cum Oil

2k BBL

Cum Gas

21 MCF

casinghead

Wells

1

Production

1993-01 — 2001-11

Peak Month

1998-02

Production History

Cum Oil: 1,894 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

74 BBL/mo

Di (annual)

291.5%

b-factor

0.4

EUR

473 BBL

R-squared

0.763

type

hyperbolic

Operator History (from monthly production reports)

2002-11 — 2003-09 BORDERLINE OPERATING CORP. 11 mo

1998-02 — 2002-10 ECHO PRODUCTION, INC. 57 mo

1997-04 — 1998-01 BORDERLINE PRODUCTION 10 mo

1993-01 — 1997-03 BIG W OIL COMPANY 51 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-237-33902	BANNER OIL & GAS LLC	3	3,300	2008-10-04