MARCY UNIT

Oil · District 03 · Lease #18290

Operator: WILLIAMS-CODY, INC.

Fields: GIDDINGS (AUSTIN CHALK-3)

Cum Oil

19k BBL

Cum Gas

441k MCF

casinghead

Wells

1

Production

1993-01 — 2013-06

Peak Month

1993-05

Production History

Cum Oil: 18,945 BBL Cum Gas: 441,118 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

437 BBL/mo

Di (annual)

54.2%

b-factor

0.5

EUR

17,999 BBL

R-squared

0.715

type

hyperbolic

Operator History (from monthly production reports)

2013-01 — 2026-07 JESSCO ENERGY INC 163 mo

2002-12 — 2012-12 CHAPARRAL ENERGY, L.L.C. 121 mo

2001-06 — 2002-11 MISSION RESOURCES CORPORATION 18 mo

1999-08 — 2001-05 BARGO ENERGY COMPANY 22 mo

1998-08 — 1999-07 FUTURE PETROLEUM CORPORATION 12 mo

1993-05 — 1998-07 CODY ENERGY, INC. 63 mo

1993-01 — 1993-04 WILLIAMS-CODY, INC. 4 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-051-30961	U. S. OPERATING INC.	3	10,550	1990-03-21