COLBY, E.H. ET AL

Oil // district 3 // lease#18825

op: TEXCAL ENERGY (GP) LLC

cum_oil

194k BBL

cum_gas

0 MCF

wells

1

production

1993-01 — 2026-03

peak_month

2011-05

-- production_history

cum_oil: 194,039 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,213 BBL/mo

Di (annual)

48.4%

b-factor

0.2

EUR

68,388 BBL

R-squared

0.702

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
16GULF OIL CORP.26,0002011-05-23
EOF // data source: Texas Railroad Commission // 2026