ROBERTSON

Oil // district 10 // lease#36200

op: SOUTHWEST ROYALTIES, INC.

cum_oil

90k BBL

cum_gas

0 MCF

wells

4

production

1999-11 — 2026-03

peak_month

2001-10

-- production_history

cum_oil: 89,590 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,217 BBL/mo

Di (annual)

27.7%

b-factor

0.3

EUR

73,562 BBL

R-squared

0.876

type

hyperbolic

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4SOUTHWEST ROYALTIES, INC.18,0002001-07-03
3SOUTHWEST ROYALTIES, INC.17,9002001-03-14
2MILTEX OIL COMPANY28,0001999-09-20
1MILTEX OIL COMPANY18,1001997-12-18
EOF // data source: Texas Railroad Commission // 2026