DEATHERAGE TRUST

Oil // district 11 // lease#69218

op: ROBERTSON RESOURCES, INC.

cum_oil

38k BBL

cum_gas

0 MCF

wells

1

production

2008-02 — 2026-03

peak_month

2008-03

-- production_history

cum_oil: 38,471 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

250 BBL/mo

Di (annual)

4.1%

b-factor

0.0

EUR

63,416 BBL

R-squared

0.696

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1BROOKS, E. B., JR.18,8502007-11-21
EOF // data source: Texas Railroad Commission // 2026