GERTIE "A"

Oil · District 8A · Lease #66210

Operator: SIMMONS, L.B. ENERGY, INC.

Cum Oil

126k BBL

Cum Gas

29k MCF

casinghead

Wells

5

Production

1993-01 — 2004-07

Peak Month

1995-08

Production History

Cum Oil: 125,864 BBL Cum Gas: 29,331 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,304 BBL/mo

Di (annual)

46.6%

b-factor

2.0

EUR

198,129 BBL

R-squared

0.819

type

hyperbolic

Operator History (from monthly production reports)

2003-03 — 2004-10 PARALLEL PETROLEUM CORPORATION 20 mo
1996-07 — 2003-02 DIAMOND "M" PRODUCTION COMPANY 80 mo
1993-01 — 1996-06 SIMMONS, L.B. ENERGY, INC. 42 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12ATLAS OPERATING LLC13,4001988-04-28
13ATLAS OPERATING LLC13,4001988-04-28
11ATLAS OPERATING LLC13,5001983-07-22
10ATLAS OPERATING LLC13,5001983-05-11
9ATLAS OPERATING LLC13,5001982-06-23