HALFF & OPPENHEIMER -C-

Oil // district 1 // lease#4586

op: WILLIAMS KOLB & LINDENBORN, INC.

cum_oil

27k BBL

cum_gas

0 MCF

wells

5

production

1993-01 — 2026-03

peak_month

2010-09

-- production_history

cum_oil: 27,149 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

333 BBL/mo

Di (annual)

164.1%

b-factor

0.4

EUR

3,933 BBL

R-squared

0.310

type

hyperbolic

-- wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1LAWBAR PETROLEUM, INC.16,0001984-06-19
242-163-30134--------
342-163-30180--------
3C42-163-30180--------
442-163-30386--------
EOF // data source: Texas Railroad Commission // 2026