THUNDERBIRD D 50-51

Oil · District 08 · Lease #55222

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

612k BBL

Cum Gas

1.2M MCF

casinghead

Wells

2

Production

2020-10 — 2026-04

Peak Month

2021-03

Production History

Cum Oil: 612,455 BBL Cum Gas: 1,226,935 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

50,018 BBL/mo

Di (annual)

154.6%

b-factor

0.3

EUR

554,736 BBL

R-squared

0.954

type

hyperbolic

Operator History (from monthly production reports)

2021-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 62 mo
2020-10 — 2021-05 DE3 OPERATING LLC 8 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2804HPIONEER NATURAL RES. USA, INC.29,0002020-07-02
4204HPIONEER NATURAL RES. USA, INC.29,5002020-07-02