SHACKELFORD 14A

Oil · District 08 · Lease #54459

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

261k BBL

Cum Gas

824k MCF

casinghead

Wells

1

Production

2020-03 — 2026-04

Peak Month

2021-03

Production History

Cum Oil: 261,321 BBL Cum Gas: 823,619 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

10,830 BBL/mo

Di (annual)

67.8%

b-factor

0.1

EUR

213,054 BBL

R-squared

0.739

type

hyperbolic

Operator History (from monthly production reports)

2020-03 — 2026-07 PIONEER NATURAL RES. USA, INC. 77 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HPIONEER NATURAL RES. USA, INC.19,1502019-08-23