E. H. BROWN -B-

Oil · District 08 · Lease #35838

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

133k BBL

Cum Gas

15k MCF

casinghead

Wells

9

Production

1998-04 — 2026-04

Peak Month

1998-06

Production History

Cum Oil: 133,090 BBL Cum Gas: 14,990 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,874 BBL/mo

Di (annual)

30.2%

b-factor

0.6

EUR

146,412 BBL

R-squared

0.869

type

hyperbolic

Operator History (from monthly production reports)

2011-04 — 2026-07 BASA RESOURCES, INC. 184 mo
2002-11 — 2011-03 CROWNQUEST OPERATING, LLC 101 mo
2001-08 — 2002-10 BC OPERATING, INC. 15 mo
1999-10 — 2001-07 CROWNQUEST OPERATING, LLC 22 mo
1998-04 — 1999-09 PIONEER NATURAL RES. USA, INC. 18 mo

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
47WBASA RESOURCES, INC.13,5002000-07-07
41BASA RESOURCES, INC.13,5002000-03-10
43WBASA RESOURCES, INC.13,5002000-03-08
2BASA RESOURCES, INC.13,3861999-03-01
18BASA RESOURCES, INC.13,4501998-02-04
17BASA RESOURCES, INC.13,4501998-01-22
19BASA RESOURCES, INC.13,4501998-01-22
21BASA RESOURCES, INC.13,4501998-01-22
25WBASA RESOURCES, INC.13,4501998-01-22