< leases

ULLRICH 'A'

Oil · District 03 · Lease #22179

Operator: UNION PACIFIC AUSTIN CHALK CO.

Fields: GIDDINGS (AUSTIN CHALK-3)

Cum Oil

478k BBL

Cum Gas

1.3M MCF

casinghead

Wells

1

Production

1993-05 — 2026-04

Peak Month

1993-07

Production History

Cum Oil: 478,053 BBL Cum Gas: 1,265,346 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

15,428 BBL/mo

Di (annual)

71.7%

b-factor

0.5

EUR

488,965 BBL

R-squared

0.657

type

hyperbolic

Operator History (from monthly production reports)

2018-08 — 2026-07 MAGNOLIA OIL & GAS OPERATING LLC 96 mo
2007-08 — 2018-07 ENERVEST OPERATING, L.L.C. 132 mo
2006-03 — 2007-07 ANADARKO E&P COMPANY LP 17 mo
2002-12 — 2006-02 ANADARKO AUSTIN CHALK COMPANY 39 mo
2001-02 — 2002-11 RME AUSTIN CHALK COMPANY 22 mo
1995-05 — 2001-01 UNION PACIFIC AUSTIN CHALK CO. 69 mo
1993-05 — 1995-04 GEMINI EXPLORATION COMPANY 24 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-287-32379MAGNOLIA OIL & GAS OPERATING LLC210,9002008-11-20