ANNA

Oil // district 8 // lease#28516

op: ROBERTSON RESOURCES, INC.

cum_oil

174 BBL

cum_gas

0 MCF

wells

1

production

1998-04 — 2012-08

peak_month

1998-04

-- production_history

cum_oil: 174 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

54 BBL/mo

Di (annual)

978.0%

b-factor

0.3

EUR

94 BBL

R-squared

0.531

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1ROBERTSON RESOURCES, INC.27,0001998-03-05
EOF // data source: Texas Railroad Commission // 2026