NAJVAR-KULLIN UNIT

Oil · District 01 · Lease #13246

Operator: UNION PACIFIC RESOURCES COMPANY

Cum Oil

48k BBL

Cum Gas

22k MCF

casinghead

Wells

1

Production

1993-01 — 2010-12

Peak Month

1993-09

Production History

Cum Oil: 48,427 BBL Cum Gas: 22,439 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,103 BBL/mo

Di (annual)

74.8%

b-factor

0.9

EUR

57,663 BBL

R-squared

0.881

type

hyperbolic

Operator History (from monthly production reports)

2009-09 — 2011-05 TDC ENGINEERING, INC. 21 mo
1996-09 — 2009-08 PETROX RESOURCES INC. 156 mo
1994-12 — 1996-08 SOUTHWEST OIL & LAND, INC. 21 mo
1993-04 — 1994-11 TORCH OPERATING COMPANY 20 mo
1993-01 — 1993-03 UNION PACIFIC RESOURCES COMPANY 3 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1TDC ENGINEERING INC.114,5001991-04-15