SHACKELFORD 39-27D

Oil · District 08 · Lease #63508

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

321k BBL

Cum Gas

558k MCF

casinghead

Wells

1

Production

2025-02 — 2026-04

Peak Month

2025-08

Production History

Cum Oil: 321,228 BBL Cum Gas: 558,406 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

67,215 BBL/mo

Di (annual)

297.4%

b-factor

0.3

EUR

388,707 BBL

R-squared

0.921

type

hyperbolic

Operator History (from monthly production reports)

2025-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 18 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
104HPIONEER NATURAL RES. USA, INC.210,5782024-09-20