< leases

WELDER, R. H. -A- A/C 1

Oil · District 04 · Lease #7311

Operator: SYDRI OPERATING, LLC

Fields: SINTON, NORTH (4600)

Cum Oil

130k BBL

Cum Gas

131k MCF

casinghead

Wells

2

Production

1993-01 — 2006-07

Peak Month

1996-01

Production History

Cum Oil: 129,543 BBL Cum Gas: 130,773 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,592 BBL/mo

Di (annual)

18.5%

b-factor

0.0

EUR

103,339 BBL

R-squared

0.592

type

exponential

Operator History (from monthly production reports)

2015-05 — 2026-07 DALLAS PETROLEUM GROUP, LLC 135 mo
2008-03 — 2015-04 SYDRI OPERATING, LLC 86 mo
2005-10 — 2008-02 HAZELETT OIL, INC. 29 mo
2002-07 — 2005-09 HAZELETT OIL COMPANY, INC. 39 mo
2001-12 — 2002-06 KEBO OIL & GAS, INC. 7 mo
2000-01 — 2001-11 CONSOLIDATED PETRO PTNRS I, LLC 23 mo
1993-01 — 1999-12 MARATHON OIL COMPANY 84 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3542-409-30176MARATHON OIL COMPANY38,2001994-05-13
3442-409-00474MARATHON OIL COMPANY------