SHACKELFORD W31D

Oil · District 08 · Lease #54285

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

410k BBL

Cum Gas

1.4M MCF

casinghead

Wells

1

Production

2020-02 — 2026-04

Peak Month

2020-11

Production History

Cum Oil: 409,504 BBL Cum Gas: 1,408,565 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

19,821 BBL/mo

Di (annual)

80.7%

b-factor

0.3

EUR

420,009 BBL

R-squared

0.920

type

hyperbolic

Operator History (from monthly production reports)

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

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HPIONEER NATURAL RES. USA, INC.210,6602018-12-31