SHANAFELT TRUST

Oil · District 09 · Lease #27745

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

Cum Oil

254k BBL

Cum Gas

171k MCF

casinghead

Wells

1

Production

1993-01 — 2024-08

Peak Month

1998-05

Production History

Cum Oil: 254,217 BBL Cum Gas: 170,843 MCF

RRC production reported through Apr 2026 · recent months incomplete

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

Operator History (from monthly production reports)

2008-03 — 2026-07 WESTERN CHIEF OPERATING, L.L.C. 221 mo
1993-01 — 2008-02 WESTERN CHIEF OIL & GAS COMPANY 182 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1AWESTERN CHIEF OPERATING L.L.C.14,9991990-05-29