SHACKELFORD 40-12AG

Oil · District 08 · Lease #61443

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

393k BBL

Cum Gas

743k MCF

casinghead

Wells

1

Production

2024-01 — 2026-04

Peak Month

2024-09

Production History

Cum Oil: 392,623 BBL Cum Gas: 742,641 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

43,169 BBL/mo

Di (annual)

229.8%

b-factor

0.7

EUR

638,014 BBL

R-squared

0.955

type

hyperbolic

Operator History (from monthly production reports)

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

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
33HPIONEER NATURAL RES. USA, INC.210,4752022-10-20