UNIV. II SEC. -1-

Oil · District 08 · Lease #28221

Operator: ARCO PERMIAN

Cum Oil

243k BBL

Cum Gas

7.3M MCF

casinghead

Wells

17

Production

1993-01 — 2000-11

Peak Month

1993-01

Production History

Cum Oil: 243,351 BBL Cum Gas: 7,334,393 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,597 BBL/mo

Di (annual)

65.1%

b-factor

2.0

EUR

735,569 BBL

R-squared

0.642

type

hyperbolic

Operator History (from monthly production reports)

1994-06 — 2001-05 ARCO PERMIAN 84 mo
1993-01 — 1994-05 ARCO OIL & GAS CO. 17 mo

Wells (17)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2AOXY USA INC.68,9232005-11-23
10AOXY USA INC.37,6002002-08-12
12DOXY USA INC.28,0002000-03-09
3AOXY USA INC.28,9202000-03-09
11DOXY USA INC.27,6001999-04-23
2COXY USA INC.28,9601999-04-22
2DOXY USA INC.58,9421999-04-22
2DUOXY USA INC.58,9421999-04-22
10DOXY USA INC.47,8001998-09-02
6BOXY USA INC.37,6001998-09-02
8CDIAMONDBACK E&P LLC37,6501998-09-02
9ADIAMONDBACK E&P LLC37,6601998-09-02
C 8DIAMONDBACK E&P LLC37,6501998-09-02
C 7OXY USA INC.37,8001998-08-04
11AOXY USA INC.27,6001995-01-18
2BOXY USA INC.38,9561993-06-22
5DOXY USA INC.28,4121991-02-06