DROUGHT, K.L.

Oil // district 4 // lease#11452

op: WALLIS ENERGY, INC.

cum_oil

86k BBL

cum_gas

0 MCF

wells

8

production

1993-01 — 2026-03

peak_month

2013-01

-- production_history

cum_oil: 86,051 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,110 BBL/mo

Di (annual)

117.7%

b-factor

0.8

EUR

35,099 BBL

R-squared

0.559

type

hyperbolic

-- wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HARVEY BROTHERS OIL & GAS33,7001992-06-25
8HARVEY BROTHERS OIL & GAS13,6001989-07-25
6HARVEY BROTHERS OIL & GAS13,6001989-07-07
7HARVEY BROTHERS OIL & GAS13,6001989-07-07
5HARVEY BROTHERS OIL & GAS13,6001989-04-13
3HARVEY BROTHERS OIL & GAS13,6001989-01-06
4HARVEY BROTHERS OIL & GAS13,6001989-01-06
1HARVEY BROTHERS OIL & GAS13,5501988-07-11
EOF // data source: Texas Railroad Commission // 2026