HALFF-HALL 1U

Oil · District 7C · Lease #20461

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

352k BBL

Cum Gas

2.1M MCF

casinghead

Wells

1

Production

2019-06 — 2026-04

Peak Month

2025-03

Production History

Cum Oil: 351,562 BBL Cum Gas: 2,055,139 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

8,321 BBL/mo

Di (annual)

45.6%

b-factor

0.0

EUR

219,199 BBL

R-squared

0.435

type

exponential

Operator History (from monthly production reports)

2019-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 86 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
21HPIONEER NATURAL RES. USA, INC.110,2002018-09-12