FULLER

Oil // district 8 // lease#31771

op: SCHALK OIL COMPANY, INC.

cum_oil

3k BBL

cum_gas

0 MCF

wells

1

production

2012-02 — 2015-09

peak_month

2012-02

-- production_history

cum_oil: 3,082 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

249 BBL/mo

Di (annual)

743.9%

b-factor

1.7

EUR

7,601 BBL

R-squared

0.518

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SCHALK OIL COMPANY, INC.26,3002011-08-10
EOF // data source: Texas Railroad Commission // 2026