BLOCK 39

Oil // district 1 // lease#11547

op: SHEFTS & SHEFTS, INC.

fields: SALT FLAT

cum_oil

12k BBL

cum_gas

0 MCF

wells

1

production

1993-01 — 2026-03

peak_month

1995-08

-- production_history

cum_oil: 11,932 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

88 BBL/mo

Di (annual)

13.4%

b-factor

0.3

EUR

10,337 BBL

R-squared

0.570

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SHEFTS & SHEFTS, INC.13,0001986-02-11
EOF // data source: Texas Railroad Commission // 2026