SHACKELFORD 40-12AF

Oil · District 08 · Lease #61333

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

492k BBL

Cum Gas

919k MCF

casinghead

Wells

1

Production

2024-01 — 2026-04

Peak Month

2024-08

Production History

Cum Oil: 492,361 BBL Cum Gas: 918,827 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

38,506 BBL/mo

Di (annual)

77.7%

b-factor

0.0

EUR

594,907 BBL

R-squared

0.805

type

exponential

Operator History (from monthly production reports)

2024-01 — 2026-07 PIONEER NATURAL RES. USA, INC. 31 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
32HPIONEER NATURAL RES. USA, INC.210,4752022-10-20