NIELSEN

Oil · District 8A · Lease #65457

Operator: WHITING PETROLEUM CORPORATION

Cum Oil

459k BBL

Cum Gas

11k MCF

casinghead

Wells

1

Production

1993-01 — 2023-09

Peak Month

2014-08

Production History

Cum Oil: 458,715 BBL Cum Gas: 11,412 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,628 BBL/mo

Di (annual)

25.4%

b-factor

0.2

EUR

154,085 BBL

R-squared

0.824

type

hyperbolic

Operator History (from monthly production reports)

2003-12 — 2025-03 WHITING OIL AND GAS CORPORATION 256 mo
1993-12 — 2003-11 WHITING PETROLEUM CORPORATION 120 mo
1993-01 — 1993-11 ESTORIL PRODUCING CORPORATION 11 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1WHITING OIL AND GAS CORPORATION113,5001985-05-28