BUTLER-RICHTER UNIT

Oil · District 01 · Lease #10078

Operator: M IV OPS., INC.

Fields: SUTIL (AUSTIN)

Cum Oil

4k BBL

Cum Gas

294 MCF

casinghead

Wells

1

Production

1993-01 — 1996-12

Peak Month

1994-07

Production History

Cum Oil: 3,855 BBL Cum Gas: 294 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

126 BBL/mo

Di (annual)

126.9%

b-factor

0.0

EUR

1,183 BBL

R-squared

0.413

type

exponential

Operator History (from monthly production reports)

1997-10 — 2008-07 DEWBRE PETROLEUM CORPORATION 130 mo

1993-05 — 1997-09 M IV OPS., INC. 53 mo

1993-01 — 1993-04 MARK IV ENERGY 4 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-493-31452	MARK IV ENERGY	2	6,536	1984-08-29