SHEPPARD "C"

Oil · District 06 · Lease #13566

Operator: MARATHON OIL COMPANY

Cum Oil

8k BBL

Cum Gas

64k MCF

casinghead

Wells

1

Production

1995-06 — 2001-11

Peak Month

1995-07

Production History

Cum Oil: 8,173 BBL Cum Gas: 64,349 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,033 BBL/mo

Di (annual)

204.5%

b-factor

0.2

EUR

7,564 BBL

R-squared

0.594

type

hyperbolic

Operator History (from monthly production reports)

2005-08 — 2010-05 FAIR OIL, LTD. 58 mo
2003-06 — 2005-07 FORRESTER, J. L. 26 mo
2002-04 — 2003-05 FAIR OIL, LTD. 14 mo
1996-10 — 2002-03 FORRESTER, J. L. 66 mo
1995-06 — 1996-09 MARATHON OIL COMPANY 16 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SOUTHWEST OPERATING, INC.-TYLER29,5001993-09-15