EDWARDS 14 "D"

Oil // district 10 // lease#35416

op: COSTILLA ENERGY, INC.

cum_oil

8k BBL

cum_gas

0 MCF

wells

1

production

1997-06 — 2001-04

peak_month

1997-06

-- production_history

cum_oil: 7,894 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,431 BBL/mo

Di (annual)

157.4%

b-factor

0.0

EUR

18,558 BBL

R-squared

0.767

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4SLANT OPERATING, LLC510,5002025-06-16
EOF // data source: Texas Railroad Commission // 2026