SOUTHLAND

Oil · District 08 · Lease #30038

Operator: MARATHON OIL COMPANY

Cum Oil

197k BBL

Cum Gas

21 MCF

casinghead

Wells

4

Production

1993-01 — 2011-11

Peak Month

1993-01

Production History

Cum Oil: 197,396 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,816 BBL/mo

Di (annual)

11.2%

b-factor

0.4

EUR

269,106 BBL

R-squared

0.964

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 (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4EXTEX OPERATING COMPANY14,0001986-01-28
2EXTEX OPERATING COMPANY14,0001985-09-20
3EXTEX OPERATING COMPANY14,0001985-09-20
1EXTEX OPERATING COMPANY14,0001985-06-18