SOUTHLAND "A"

Oil · District 08 · Lease #30976

Operator: MARATHON OIL COMPANY

Cum Oil

126k BBL

Cum Gas

21 MCF

casinghead

Wells

2

Production

1993-01 — 2011-11

Peak Month

2005-07

Production History

Cum Oil: 125,524 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

643 BBL/mo

Di (annual)

8.2%

b-factor

1.1

EUR

157,537 BBL

R-squared

0.397

type

hyperbolic

Operator History (from monthly production reports)

2006-04 — 2012-08 LEGACY RESERVES OPERATING LP 77 mo
1999-11 — 2006-03 BROTHERS PRODUCTION COMPANY INC. 77 mo
1996-04 — 1999-10 MARATHON OIL COMPANY 43 mo
1993-01 — 1996-03 GUTHRIE, A. K. OPERATING CO. 39 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1EXTEX OPERATING COMPANY14,0001986-09-24
2EXTEX OPERATING COMPANY14,0001986-09-24