SOUTHLAND ROYALTY "D"

Oil · District 08 · Lease #34938

Operator: MARALO, LLC

Cum Oil

31k BBL

Cum Gas

3k MCF

casinghead

Wells

1

Production

1996-04 — 2026-04

Peak Month

1996-05

Production History

Cum Oil: 30,557 BBL Cum Gas: 2,819 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

307 BBL/mo

Di (annual)

33.6%

b-factor

1.0

EUR

31,616 BBL

R-squared

0.655

type

hyperbolic

Operator History (from monthly production reports)

2023-03 — 2026-07 HIGHMARK ENERGY OPERATING, LLC 41 mo
2013-01 — 2023-02 LEGACY RESERVES OPERATING LP 122 mo
2004-12 — 2012-12 COG OPERATING LLC 97 mo
1999-01 — 2004-11 MARALO, LLC 71 mo
1996-04 — 1998-12 MARALO, INC. 33 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HIGHMARK ENERGY OPERATING, LLC29,4001996-05-01