CHAPMAN

Oil // district 4 // lease#12700

op: GEISER OPERATING, INC.

cum_oil

277k BBL

cum_gas

0 MCF

wells

2

production

1997-09 — 2019-09

peak_month

1997-12

-- production_history

cum_oil: 277,257 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

4,822 BBL/mo

Di (annual)

30.4%

b-factor

0.2

EUR

237,313 BBL

R-squared

0.843

type

hyperbolic

-- wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
435GEISER, D. ALLEN17,2501997-09-12
434GEISER, D. ALLEN16,6501997-08-15
EOF // data source: Texas Railroad Commission // 2026