THUNDERBIRD CC 50-51

Oil // district 10 // lease#57489

op: PIONEER NATURAL RES. USA, INC.

cum_oil

279k BBL

cum_gas

0 MCF

wells

1

production

2021-12 — 2026-03

peak_month

2022-06

-- production_history

cum_oil: 279,178 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

18,307 BBL/mo

Di (annual)

117.9%

b-factor

0.4

EUR

308,092 BBL

R-squared

0.865

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HPIONEER NATURAL RES. USA, INC.210,3602021-02-04
EOF // data source: Texas Railroad Commission // 2026