DUFF, A. H. ESTATE

Oil · District 7C · Lease #7973

Operator: UNION PACIFIC RESOURCES COMPANY

Cum Oil

55k BBL

Cum Gas

979k MCF

casinghead

Wells

6

Production

1993-01 — 2026-04

Peak Month

1999-05

Production History

Cum Oil: 55,479 BBL Cum Gas: 978,994 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

337 BBL/mo

Di (annual)

7.5%

b-factor

0.0

EUR

52,916 BBL

R-squared

0.629

type

exponential

Operator History (from monthly production reports)

2007-09 — 2026-07 TREK RESOURCES, INC. 227 mo
2001-12 — 2007-08 MONTGOMERY PETROLEUM, INC. 69 mo
1996-01 — 2001-11 MJM OIL & GAS, INC. 71 mo
1995-10 — 1995-12 MONTGOMERY PETROLEUM, INC. 3 mo
1993-01 — 1995-09 UNION PACIFIC RESOURCES COMPANY 33 mo

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8TREK RESOURCES, INC.26,8002006-08-31
6TREK RESOURCES, INC.37,0001983-05-16
7TREK RESOURCES, INC.17,0001980-04-08
5TREK RESOURCES, INC.17,0001980-01-24
4TREK RESOURCES, INC.17,0001979-11-26
2TREK RESOURCES, INC.17,0001979-07-24