SHACKELFORD 39D

Oil · District 08 · Lease #56521

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

308k BBL

Cum Gas

1.4M MCF

casinghead

Wells

1

Production

2021-07 — 2026-04

Peak Month

2022-08

Production History

Cum Oil: 307,771 BBL Cum Gas: 1,361,750 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

26,788 BBL/mo

Di (annual)

210.2%

b-factor

0.3

EUR

218,648 BBL

R-squared

0.955

type

hyperbolic

Operator History (from monthly production reports)

2021-07 — 2026-07 PIONEER NATURAL RES. USA, INC. 61 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HPIONEER NATURAL RES. USA, INC.110,5912021-03-19