WELDER -A-

Oil · District 04 · Lease #11121

Operator: SOUTH TEXAS OPERATING COMPANY

Fields: SQUIRE

Cum Oil

38k BBL

Cum Gas

45k MCF

casinghead

Wells

3

Production

1993-01 — 2002-08

Peak Month

1995-01

Production History

Cum Oil: 38,450 BBL Cum Gas: 45,239 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

879 BBL/mo

Di (annual)

42.8%

b-factor

0.0

EUR

24,632 BBL

R-squared

0.753

type

exponential

Operator History (from monthly production reports)

2006-04 — 2026-07 D & B ENERGY CORPORATION 244 mo
2004-07 — 2006-03 ALBERTA ENERGY RECOVERY, LTD. 21 mo
1997-12 — 2004-06 ALACIA OPERATING COMPANY 79 mo
1993-01 — 1997-11 SOUTH TEXAS OPERATING COMPANY 59 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3D & B ENERGY CORPORATION14,5001986-11-17
2D & B ENERGY CORPORATION14,3001986-09-05
442-131-31413D & B ENERGY CORPORATION------