KING-BOX UNIT

Oil · District 09 · Lease #28415

Operator: WESTERN CHIEF OIL & GAS COMPANY

Cum Oil

52k BBL

Cum Gas

35k MCF

casinghead

Wells

1

Production

1993-01 — 2004-02

Peak Month

1994-05

Production History

Cum Oil: 52,490 BBL Cum Gas: 35,363 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,332 BBL/mo

Di (annual)

68.5%

b-factor

0.2

EUR

29,092 BBL

R-squared

0.803

type

hyperbolic

Operator History (from monthly production reports)

2000-10 — 2008-03 D L OPERATING 90 mo
1993-01 — 2000-09 WESTERN CHIEF OIL & GAS COMPANY 93 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1D L OPERATING25,3002004-04-27