VASEK-VASEK UNIT

Oil · District 03 · Lease #21387

Operator: UNION PACIFIC RESOURCES COMPANY

Cum Oil

136k BBL

Cum Gas

569k MCF

casinghead

Wells

1

Production

1993-01 — 2011-04

Peak Month

1993-01

Production History

Cum Oil: 135,839 BBL Cum Gas: 568,507 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,604 BBL/mo

Di (annual)

103.1%

b-factor

0.2

EUR

37,831 BBL

R-squared

0.833

type

hyperbolic

Operator History (from monthly production reports)

2007-08 — 2012-05 ENERVEST OPERATING, L.L.C. 58 mo
2002-12 — 2007-07 ANADARKO E&P COMPANY LP 56 mo
2001-02 — 2002-11 RME PETROLEUM COMPANY 22 mo
1993-01 — 2001-01 UNION PACIFIC RESOURCES COMPANY 97 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1ENERVEST OPERATING L.L.C.114,0001991-11-13