CHAPMAN, MEL

Oil · District 09 · Lease #21082

Operator: THOMAS, M.A. OIL ASSOCIATES

Fields: LONE PRAIRIE

Cum Oil

34k BBL

Cum Gas

110 MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

2020-11

Production History

Cum Oil: 34,224 BBL Cum Gas: 110 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

115 BBL/mo

Di (annual)

9.4%

b-factor

0.0

EUR

14,511 BBL

R-squared

0.398

type

exponential

Operator History (from monthly production reports)

2025-06 — 2026-07 ESP ENERGY, LLC 14 mo

2020-06 — 2025-05 ROCKIN C PRODUCTION, L.L.C. 60 mo

2012-09 — 2020-05 L2SG PRODUCTION, LLC 93 mo

2002-01 — 2012-08 RICHARDSON, JOHN R. 128 mo

1998-12 — 2001-12 HOWARD OPERATING CO. 37 mo

1996-08 — 1998-11 ALLEN, C. L. (DOIE) 28 mo

1994-09 — 1996-07 THOMAS, M.A. OIL ASSOCIATES 23 mo

1993-09 — 1994-08 ALLEN, C. L. (DOIE) 12 mo

1993-01 — 1993-08 MAYCO OIL 8 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
4A	42-337-03406	ESP ENERGY, LLC	1	6,100	1982-02-25
6	42-337-82765	ESP ENERGY, LLC	1	6,196	1981-03-12