SHACKELFORD 41D

Oil · District 08 · Lease #57565

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

279k BBL

Cum Gas

1.1M MCF

casinghead

Wells

1

Production

2022-02 — 2026-04

Peak Month

2023-04

Production History

Cum Oil: 279,327 BBL Cum Gas: 1,129,852 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

17,536 BBL/mo

Di (annual)

92.5%

b-factor

0.0

EUR

227,630 BBL

R-squared

0.692

type

exponential

Operator History (from monthly production reports)

2022-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 54 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HPIONEER NATURAL RES. USA, INC.19,2502021-10-27