NIELSEN

Oil // district 11 // lease#65457

op: WHITING PETROLEUM CORPORATION

cum_oil

459k BBL

cum_gas

0 MCF

wells

1

production

1993-01 — 2025-03

peak_month

2014-08

-- production_history

cum_oil: 458,715 BBL cum_gas: 0 MCF

-- 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

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1ESTORIL PRODUCING CORPORATION113,5001985-05-28
EOF // data source: Texas Railroad Commission // 2026