SHACKELFORD 31-26G

Oil // district 10 // lease#63511

op: PIONEER NATURAL RES. USA, INC.

cum_oil

180k BBL

cum_gas

0 MCF

wells

1

production

2025-06 — 2026-03

peak_month

2025-06

-- production_history

cum_oil: 180,375 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

45,157 BBL/mo

Di (annual)

262.3%

b-factor

0.0

EUR

207,422 BBL

R-squared

0.998

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
107HPIONEER NATURAL RES. USA, INC.110,6102024-10-17
EOF // data source: Texas Railroad Commission // 2026