COX, X. B. "C"

Oil // district 9 // lease#12142

op: PIONEER NATURAL RES. USA, INC.

cum_oil

79k BBL

cum_gas

0 MCF

wells

3

production

1993-01 — 2026-03

peak_month

2013-01

-- production_history

cum_oil: 79,291 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

874 BBL/mo

Di (annual)

29.3%

b-factor

0.1

EUR

39,654 BBL

R-squared

0.843

type

hyperbolic

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6PIONEER NATURAL RES. USA, INC.28,5502001-01-23
4STANDARD OIL PRODUCTION COMPANY28,5071993-05-13
5STANDARD OIL PRODUCTION COMPANY28,5891987-02-03
EOF // data source: Texas Railroad Commission // 2026