HALFF 2B

Oil · District 7C · Lease #18580

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

72k BBL

Cum Gas

202k MCF

casinghead

Wells

2

Production

2013-12 — 2021-03

Peak Month

2015-04

Production History

Cum Oil: 71,653 BBL Cum Gas: 202,255 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,952 BBL/mo

Di (annual)

62.6%

b-factor

0.7

EUR

92,139 BBL

R-squared

0.640

type

hyperbolic

Operator History (from monthly production reports)

2016-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 122 mo
2013-12 — 2016-05 PARSLEY ENERGY OPERATIONS, LLC 30 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2PIONEER NATURAL RES. USA INC.111,8002014-04-25
1PIONEER NATURAL RES. USA INC.212,0002013-10-30