GERTIE "A"

Oil // district 11 // lease#66210

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

cum_oil

126k BBL

cum_gas

0 MCF

wells

5

production

1993-01 — 2004-10

peak_month

2001-02

-- production_history

cum_oil: 125,864 BBL cum_gas: 0 MCF

-- 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

-- wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12BHP PETROLEUM COMPANY INC.13,4001988-04-28
13BHP PETROLEUM COMPANY INC.13,4001988-04-28
11MONSANTO OIL COMPANY13,5001983-07-22
10MONSANTO OIL COMPANY13,5001983-05-11
9MONSANTO COMPANY13,5001982-06-23
EOF // data source: Texas Railroad Commission // 2026