COOK "AB"

Oil · District 05 · Lease #2858

Operator: MARATHON OIL COMPANY

Cum Oil

75k BBL

Cum Gas

20 MCF

casinghead

Wells

1

Production

1993-01 — 2007-12

Peak Month

2000-10

Production History

Cum Oil: 75,359 BBL Cum Gas: 20 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

743 BBL/mo

Di (annual)

28.1%

b-factor

0.0

EUR

31,642 BBL

R-squared

0.434

type

exponential

Operator History (from monthly production reports)

2008-07 — 2009-09 DIMOCK OPERATING COMPANY 15 mo
2006-04 — 2008-06 COMANCHE WELL SERVICE CORP. 27 mo
2005-10 — 2006-03 COLE, FRANK W ENGINEERING 6 mo
1997-01 — 2005-09 CORDELL ENERGY CORPORATION 105 mo
1994-08 — 1996-12 LAMARKITA, INC. 29 mo
1993-01 — 1994-07 MARATHON OIL COMPANY 19 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIMOCK OPERATING COMPANY14,6751985-09-18