SHACKELFORD E40C

Oil · District 08 · Lease #54414

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

243k BBL

Cum Gas

1.5M MCF

casinghead

Wells

1

Production

2020-03 — 2026-04

Peak Month

2021-06

Production History

Cum Oil: 243,095 BBL Cum Gas: 1,509,844 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

28,101 BBL/mo

Di (annual)

398.0%

b-factor

0.7

EUR

249,226 BBL

R-squared

0.825

type

hyperbolic

Operator History (from monthly production reports)

2020-03 — 2026-07 PIONEER NATURAL RES. USA, INC. 77 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
103HPIONEER NATURAL RES. USA, INC.310,3502019-11-14