DUVAL RANCH, SEC. #288

Oil // district 4 // lease#452

op: MCGOWAN WORKING PARTNERS, INC.

cum_oil

849k BBL

cum_gas

0 MCF

wells

20

production

1993-01 — 2026-03

peak_month

1993-07

-- production_history

cum_oil: 848,620 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

12,379 BBL/mo

Di (annual)

101.0%

b-factor

1.4

EUR

878,649 BBL

R-squared

0.871

type

hyperbolic

-- wells (20)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
24MCGOWAN WORKING PARTNERS11,6501992-12-31
25MCGOWAN WORKING PARTNERS11,6501992-12-31
26MCGOWAN WORKING PARTNERS11,6501992-12-31
27MCGOWAN WORKING PARTNERS11,6501992-12-31
28MCGOWAN WORKING PARTNERS21,7001992-12-31
29MCGOWAN WORKING PARTNERS21,7001992-12-31
30 WMCGOWAN WORKING PARTNERS21,7001992-12-31
23WIMCGOWAN WORKING PARTNERS11,7001992-03-24
22MCGOWAN WORKING PARTNERS11,6501992-03-23
1042-131-04607--------
1542-131-80243--------
18W42-131-30850--------
1942-131-30849--------
242-131-80237--------
342-131-04600--------
442-131-04601--------
5W42-131-04602--------
742-131-04604--------
842-131-04605--------
942-131-04606--------
EOF // data source: Texas Railroad Commission // 2026