HALFF 1E

Oil · District 7C · Lease #20139

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

474k BBL

Cum Gas

1.3M MCF

casinghead

Wells

1

Production

2018-09 — 2026-04

Peak Month

2018-10

Production History

Cum Oil: 474,068 BBL Cum Gas: 1,322,983 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

8,180 BBL/mo

Di (annual)

30.9%

b-factor

0.0

EUR

317,391 BBL

R-squared

0.389

type

exponential

Operator History (from monthly production reports)

2018-09 — 2026-07 PIONEER NATURAL RES. USA, INC. 95 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
105HPIONEER NATURAL RES. USA, INC.110,2002017-12-07