CHAPMAN

Oil // district 4 // lease#12508

op: GEISER OPERATING, INC.

cum_oil

136k BBL

cum_gas

0 MCF

wells

3

production

1995-11 — 2019-09

peak_month

1996-05

-- production_history

cum_oil: 135,965 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

9,829 BBL/mo

Di (annual)

151.2%

b-factor

0.3

EUR

111,375 BBL

R-squared

0.922

type

hyperbolic

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
441 TGEISER, D. ALLEN47,5002005-05-20
433GEISER, D. ALLEN17,5001996-03-21
431GEISER, D. ALLEN27,5001995-10-11
EOF // data source: Texas Railroad Commission // 2026