SHACKELFORD W40F

Oil · District 08 · Lease #54528

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

470k BBL

Cum Gas

1.8M MCF

casinghead

Wells

1

Production

2020-04 — 2026-04

Peak Month

2021-12

Production History

Cum Oil: 469,526 BBL Cum Gas: 1,796,821 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

22,031 BBL/mo

Di (annual)

80.9%

b-factor

0.4

EUR

537,272 BBL

R-squared

0.886

type

hyperbolic

Operator History (from monthly production reports)

2020-04 — 2026-07 PIONEER NATURAL RES. USA, INC. 76 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6HPIONEER NATURAL RES. USA, INC.110,3252019-11-14