KEYSTONE "A"

Oil // district 1 // lease#13872

op: PENROD OIL COMPANY OF TEXAS, INC

cum_oil

16k BBL

cum_gas

0 MCF

wells

4

production

1994-06 — 1999-01

peak_month

1997-11

-- production_history

cum_oil: 15,935 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

757 BBL/mo

Di (annual)

97.5%

b-factor

0.2

EUR

11,600 BBL

R-squared

0.633

type

hyperbolic

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5FAIR ENERGY16,9001978-10-03
4FAIR ENERGY26,9001978-06-20
3AFAIR ENERGY16,9501977-10-31
1FAIR OIL, LTD.16,8001977-07-08
EOF // multi-state drilling data platform // 2026