ROACH, A.S.

Oil · District 04 · Lease #9025

Operator: TRISTAR OIL & GAS

Fields: ELVA (DINN SAND)

Cum Oil

13k BBL

Cum Gas

21 MCF

casinghead

Wells

2

Production

1993-01 — 2018-06

Peak Month

1993-09

Production History

Cum Oil: 13,470 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

233 BBL/mo

Di (annual)

20.9%

b-factor

0.0

EUR

13,321 BBL

R-squared

0.429

type

exponential

Operator History (from monthly production reports)

2018-11 — 2026-07 TRISTAR OIL & GAS 93 mo

2012-06 — 2018-10 REO OPERATING LLC 77 mo

2010-02 — 2012-05 JOE KESTNER, L.L.C. 28 mo

1994-05 — 2010-01 HERSCHAP BROS. 189 mo

1993-01 — 1994-04 MCRAE, NATHAN RATHBURN 16 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
2	42-131-32564	TRISTAR OIL & GAS	1	3,600	1978-04-26
1	42-131-32462	TRISTAR OIL & GAS	1	4,300	1977-10-24