SHACKELFORD 40-12C

Oil · District 08 · Lease #59449

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

480k BBL

Cum Gas

1.6M MCF

casinghead

Wells

1

Production

2023-03 — 2026-04

Peak Month

2023-08

Production History

Cum Oil: 480,060 BBL Cum Gas: 1,637,018 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

37,773 BBL/mo

Di (annual)

157.4%

b-factor

0.5

EUR

562,201 BBL

R-squared

0.934

type

hyperbolic

Operator History (from monthly production reports)

2023-03 — 2026-07 PIONEER NATURAL RES. USA, INC. 41 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HPIONEER NATURAL RES. USA, INC.210,4752022-09-07