SHACKELFORD 14F

Oil · District 08 · Lease #54359

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

363k BBL

Cum Gas

1.2M MCF

casinghead

Wells

1

Production

2020-02 — 2026-04

Peak Month

2021-08

Production History

Cum Oil: 363,466 BBL Cum Gas: 1,208,431 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

18,905 BBL/mo

Di (annual)

189.3%

b-factor

0.9

EUR

468,337 BBL

R-squared

0.732

type

hyperbolic

Operator History (from monthly production reports)

2020-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 78 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6HPIONEER NATURAL RES. USA, INC.19,1502019-08-23