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BANKHEAD "A"

Oil · District 7C · Lease #10913

Operator: WHITING OIL AND GAS CORPORATION

Fields: BENEDUM (SPRABERRY)

Cum Oil

28k BBL

Cum Gas

99k MCF

casinghead

Wells

2

Production

1993-01 — 2025-01

Peak Month

1994-07

Production History

Cum Oil: 27,522 BBL Cum Gas: 98,701 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

131 BBL/mo

Di (annual)

5.5%

b-factor

0.0

EUR

26,524 BBL

R-squared

0.332

type

exponential

Operator History (from monthly production reports)

2006-08 — 2026-07 NORDSTRAND ENGINEERING, INC. 240 mo
2005-10 — 2006-07 WHITING OIL AND GAS CORPORATION 10 mo
2004-11 — 2005-09 CELERO ENERGY, L.P. 11 mo
2001-08 — 2004-10 BC OPERATING, INC. 39 mo
2000-01 — 2001-07 CROWNQUEST OPERATING, LLC 19 mo
1993-01 — 1999-12 BC OPERATING, INC. 84 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
242-383-33141NORDSTRAND ENGINEERING INC.18,3001984-07-18
142-383-33005NORDSTRAND ENGINEERING INC.18,3001984-03-30