GRAVES "B"

Oil // district 8 // lease#25688

op: WINDOW OPERATING CO., THE

cum_oil

42k BBL

cum_gas

0 MCF

wells

6

production

1993-01 — 2026-03

peak_month

1993-01

-- production_history

cum_oil: 42,093 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

676 BBL/mo

Di (annual)

31.6%

b-factor

0.3

EUR

36,013 BBL

R-squared

0.724

type

hyperbolic

-- wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5WESTERN SKY OIL & GAS12,9001993-02-01
4WESTERN SKY OIL & GAS13,0001991-11-12
19POLK & PATTON, INC.13,0001991-08-22
3WESTERN SKY OIL & GAS22,9001991-05-21
1WESTERN SKY OIL & GAS12,9001990-11-09
2WESTERN SKY OIL & GAS13,0001989-04-07
EOF // data source: Texas Railroad Commission // 2026