TXL -3-

Oil · District 08 · Lease #25432

Operator: NORTHSTAR OPERATING COMPANY

Cum Oil

41k BBL

Cum Gas

66k MCF

casinghead

Wells

2

Production

1993-01 — 2012-03

Peak Month

1993-06

Production History

Cum Oil: 41,405 BBL Cum Gas: 65,659 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

297 BBL/mo

Di (annual)

10.2%

b-factor

0.0

EUR

34,907 BBL

R-squared

0.657

type

exponential

Operator History (from monthly production reports)

2004-01 — 2012-12 NORTHSTAR OPERATING COMPANY 108 mo
1996-02 — 2003-12 LIMARK CORPORATION 95 mo
1993-01 — 1996-01 MWJ PRODUCING COMPANY 37 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2NORTHSTAR OPERATING COMPANY18,6001979-09-06
1NORTHSTAR OPERATING COMPANY18,6001978-12-22