SHANAFELT TRUST

Oil // district 13 // lease#27745

op: WESTERN CHIEF OPERATING, L.L.C.

cum_oil

254k BBL

cum_gas

0 MCF

wells

1

production

1993-01 — 2026-03

peak_month

1998-05

-- production_history

cum_oil: 254,217 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

874 BBL/mo

Di (annual)

2.7%

b-factor

0.0

EUR

284,971 BBL

R-squared

0.639

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1AWESTERN CHIEF OIL & GAS COMPANY14,9991990-05-29
EOF // multi-state drilling data platform // 2026