SANDEFUR A

Oil // district 10 // lease#40239

op: SOUTHWEST ROYALTIES, INC.

cum_oil

3k BBL

cum_gas

0 MCF

wells

1

production

2010-02 — 2026-03

peak_month

2012-09

-- production_history

cum_oil: 3,033 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

196 BBL/mo

Di (annual)

156.1%

b-factor

0.0

EUR

1,501 BBL

R-squared

0.773

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SOUTHWEST ROYALTIES, INC.312,0002010-03-18
EOF // data source: Texas Railroad Commission // 2026