GAMBLE

Oil // district 13 // lease#31242

op: PIONEER NATURAL RES. USA, INC.

cum_oil

1k BBL

cum_gas

0 MCF

wells

1

production

2008-09 — 2011-06

peak_month

2008-11

-- production_history

cum_oil: 1,468 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

266 BBL/mo

Di (annual)

128.6%

b-factor

0.0

EUR

2,474 BBL

R-squared

0.358

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HDUNE OPERATING COMPANY19,5002008-03-11
EOF // data source: Texas Railroad Commission // 2026