CASE

Oil · District 10 · Lease #5520

Operator: WALLS, G. M. & FRANCES, INC.

Fields: PANHANDLE GRAY COUNTY FIELD

Cum Oil

5k BBL

Cum Gas

342k MCF

casinghead

Wells

1

Production

1993-01 — 2025-07

Peak Month

1999-06

Production History

Cum Oil: 4,557 BBL Cum Gas: 341,703 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

31 BBL/mo

Di (annual)

10.5%

b-factor

0.1

EUR

3,706 BBL

R-squared

0.771

type

hyperbolic

Operator History (from monthly production reports)

2009-01 — 2026-07 MON CORP. 211 mo

2008-10 — 2008-12 WALLS, G. M. & FRANCES, INC. 3 mo

1993-01 — 2008-09 MON CORP. 189 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-179-31444	MON CORP.	1	3,600	1983-07-27