PHILLIPS-APPELT UNIT

Oil · District 03 · Lease #21804

Operator: WILLIAMS, CLAYTON W., JR., INC.

Fields: GIDDINGS (AUSTIN CHALK-3)

Cum Oil

202k BBL

Cum Gas

1.4M MCF

casinghead

Wells

1

Production

1993-01 — 2026-04

Peak Month

1993-03

Production History

Cum Oil: 202,292 BBL Cum Gas: 1,448,447 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

7,811 BBL/mo

Di (annual)

117.2%

b-factor

0.6

EUR

181,674 BBL

R-squared

0.934

type

hyperbolic

Operator History (from monthly production reports)

2025-08 — 2026-07 MAGNOLIA OIL & GAS OPERATING LLC 12 mo

2022-08 — 2025-07 DALLAS PETROLEUM GROUP, LLC 36 mo

2019-06 — 2022-07 CHESAPEAKE OPERATING, L.L.C. 38 mo

2016-12 — 2019-05 WILDHORSE RESOURCES MNGT CO, LLC 30 mo

1993-06 — 2016-11 WILLIAMS, CLAYTON ENERGY, INC. 282 mo

1993-05 — 1993-05 WILLIAMS, CLAYTON ENERGY, L.L.C 1 mo

1993-01 — 1993-04 WILLIAMS, CLAYTON W., JR., INC. 4 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-149-32651	MAGNOLIA OIL & GAS OPERATING LLC	1	11,100	1992-06-24