SHANNON

Oil · District 7C · Lease #2019

Operator: SOUTHLAND ROYALTY COMPANY

Cum Oil

2.4M BBL

Cum Gas

2.0M MCF

casinghead

Wells

14

Production

1993-01 — 2026-04

Peak Month

2001-12

Production History

Cum Oil: 2,360,432 BBL Cum Gas: 2,006,674 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

18,932 BBL/mo

Di (annual)

16.7%

b-factor

0.0

EUR

1,356,918 BBL

R-squared

0.609

type

exponential

Operator History (from monthly production reports)

2000-12 — 2026-07 O'RYAN OIL AND GAS 308 mo
2000-03 — 2000-11 EOG RESOURCES, INC. 9 mo
1996-08 — 2000-02 BURLINGTON RESOURCES OIL&GAS CO. 43 mo
1996-02 — 1996-07 MERIDIAN OIL INC. 6 mo
1993-01 — 1996-01 SOUTHLAND ROYALTY COMPANY 37 mo

Wells (14)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6O'RYAN OIL AND GAS11,9992002-03-12
7O'RYAN OIL AND GAS11,7301995-05-02
17O'RYAN OIL AND GAS16,6001992-05-12
142-105-00363O'RYAN OIL AND GAS------
1042-105-00401O'RYAN OIL AND GAS------
10D42-105-00401O'RYAN OIL AND GAS------
1142-105-00402O'RYAN OIL AND GAS------
12W42-105-00403O'RYAN OIL AND GAS------
242-105-00393O'RYAN OIL AND GAS------
342-105-00394O'RYAN OIL AND GAS------
442-105-00395O'RYAN OIL AND GAS------
542-105-00396O'RYAN OIL AND GAS------
842-105-00399O'RYAN OIL AND GAS------
942-105-00400O'RYAN OIL AND GAS------