ARCO-VASTAR UNIT A-172A

Oil · District 06 · Lease #13211

Operator: VASTAR RESOURCES, INC.

Cum Oil

43k BBL

Cum Gas

218k MCF

casinghead

Wells

1

Production

1993-08 — 1995-02

Peak Month

1993-11

Production History

Cum Oil: 43,043 BBL Cum Gas: 218,029 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,750 BBL/mo

Di (annual)

280.6%

b-factor

0.1

EUR

22,656 BBL

R-squared

0.624

type

hyperbolic

Operator History (from monthly production reports)

1995-04 — 1998-03 UNION PACIFIC RESOURCES COMPANY 36 mo
1994-03 — 1995-03 VASTAR RESOURCES, INC. 13 mo
1993-08 — 1994-02 ARCO OIL & GAS CO. 7 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2UNION PACIFIC RESOURCES COMPANY113,0001993-03-03