DUNAGAN RANCH

Oil // district 10 // lease#35983

op: SOUTHWEST ROYALTIES, INC.

cum_oil

2k BBL

cum_gas

0 MCF

wells

2

production

1998-11 — 2012-03

peak_month

1998-11

-- production_history

cum_oil: 2,419 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

131 BBL/mo

Di (annual)

472.0%

b-factor

0.7

EUR

858 BBL

R-squared

0.302

type

hyperbolic

-- wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SOUTHWEST ROYALTIES, INC.618,5002018-04-13
1DSOUTHWEST ROYALTIES, INC.618,5002018-04-13
EOF // data source: Texas Railroad Commission // 2026