WILLIS

Oil // district 10 // lease#22347

op: PIONEER NATURAL RES. USA, INC.

cum_oil

117k BBL

cum_gas

0 MCF

wells

9

production

1993-01 — 2026-03

peak_month

2000-12

-- production_history

cum_oil: 117,303 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,054 BBL/mo

Di (annual)

17.2%

b-factor

0.2

EUR

90,430 BBL

R-squared

0.906

type

hyperbolic

-- wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7COX, JOHN L.19,1002000-05-25
8COX, JOHN L.19,1002000-05-25
5COX, JOHN L.211,5001997-05-15
6COX, JOHN L.19,0001991-04-25
142-329-30128--------
1WD42-329-00222--------
242-329-30143--------
342-329-30224--------
442-329-30244--------
EOF // data source: Texas Railroad Commission // 2026