LECK J. B.

Oil // district 10 // lease#30799

op: KEYSTONE ENERGY OIL & GAS, INC.

fields: HENDRICK

cum_oil

9k BBL

cum_gas

0 MCF

wells

3

production

1993-01 — 2000-04

peak_month

1994-05

-- production_history

cum_oil: 8,628 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

135 BBL/mo

Di (annual)

15.3%

b-factor

0.1

EUR

11,577 BBL

R-squared

0.427

type

hyperbolic

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2KEYSTONE ENERGY OIL & GAS, INC.13,3001987-12-29
4KEYSTONE ENERGY OIL & GAS, INC.13,3001987-12-29
1KEYSTONE ENERGY OIL & GAS, INC.13,3001986-04-23
EOF // multi-state drilling data platform // 2026