NORTHERN RANCH

Oil · District 03 · Lease #12905

Operator: MUELLER ENGINEERING CORP.

Cum Oil

70k BBL

Cum Gas

140k MCF

casinghead

Wells

1

Production

1993-01 — 2005-11

Peak Month

2004-01

Production History

Cum Oil: 69,845 BBL Cum Gas: 140,321 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

622 BBL/mo

Di (annual)

37.3%

b-factor

1.0

EUR

59,533 BBL

R-squared

0.720

type

hyperbolic

Operator History (from monthly production reports)

1997-08 — 2006-03 APACHE CORPORATION 104 mo
1993-01 — 1997-07 MUELLER ENGINEERING CORP. 55 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4 LCOCKRELL OIL CORPORATION47,5162010-01-27