THUNDERBIRD C 50-51

Oil · District 08 · Lease #55221

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

279k BBL

Cum Gas

1.2M MCF

casinghead

Wells

1

Production

2020-09 — 2026-04

Peak Month

2021-03

Production History

Cum Oil: 279,480 BBL Cum Gas: 1,204,822 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

22,210 BBL/mo

Di (annual)

183.3%

b-factor

0.4

EUR

241,558 BBL

R-squared

0.827

type

hyperbolic

Operator History (from monthly production reports)

2021-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 62 mo
2020-09 — 2021-05 DE3 OPERATING LLC 9 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4303HPIONEER NATURAL RES. USA, INC.29,5002020-07-02