< leases

HARDBERGER

Oil · District 8A · Lease #67625

Operator: VANGUARD PERMIAN, LLC

Fields: CHAMPMON (STRAWN)

Cum Oil

1.7M BBL

Cum Gas

993k MCF

casinghead

Wells

4

Production

1996-10 — 2026-04

Peak Month

2002-07

Production History

Cum Oil: 1,656,909 BBL Cum Gas: 992,801 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

15,080 BBL/mo

Di (annual)

19.7%

b-factor

0.0

EUR

919,979 BBL

R-squared

0.857

type

exponential

Operator History (from monthly production reports)

2020-06 — 2026-07 GRACE PETROLEUM OPERATING, LLC 74 mo
2019-09 — 2020-05 GRIZZLY OP OF DELAWARE, LLC 9 mo
2015-05 — 2019-08 VANGUARD OPERATING, LLC 52 mo
2012-04 — 2015-04 VANGUARD PERMIAN, LLC 37 mo
2008-01 — 2012-03 ENCORE ENERGY PARTNERS OPER LLC 51 mo
2004-05 — 2007-12 ENCORE OPERATING, L.P. 44 mo
2002-08 — 2004-04 CORTEZ OPERATING COMPANY 21 mo
1998-01 — 2002-07 HOME-STAKE OIL & GAS COMPANY 55 mo
1996-10 — 1997-12 HOME-STAKE ROYALTY CORP., THE 15 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
442-165-36159GRACE PETROLEUM OPERATING, LLC111,5002004-06-08
342-165-35543GRACE PETROLEUM OPERATING, LLC111,5002000-06-20
242-165-35493GRACE PETROLEUM OPERATING, LLC111,5002000-01-27
142-165-35033GRACE PETROLEUM OPERATING, LLC112,8001996-07-15