SHACKELFORD 14D

Oil · District 08 · Lease #54424

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

272k BBL

Cum Gas

1.1M MCF

casinghead

Wells

1

Production

2020-01 — 2026-04

Peak Month

2021-08

Production History

Cum Oil: 271,780 BBL Cum Gas: 1,118,003 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

8,427 BBL/mo

Di (annual)

49.4%

b-factor

0.0

EUR

204,912 BBL

R-squared

0.560

type

exponential

Operator History (from monthly production reports)

2020-01 — 2026-07 PIONEER NATURAL RES. USA, INC. 79 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HPIONEER NATURAL RES. USA, INC.19,1502019-08-23