HALFF ESTATE 26

Oil · District 7C · Lease #7999

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

28k BBL

Cum Gas

46k MCF

casinghead

Wells

1

Production

1993-01 — 2022-01

Peak Month

2008-01

Production History

Cum Oil: 27,667 BBL Cum Gas: 46,299 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

193 BBL/mo

Di (annual)

10.2%

b-factor

0.0

EUR

22,677 BBL

R-squared

0.593

type

exponential

Operator History (from monthly production reports)

2021-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 62 mo
2018-08 — 2021-05 DE3 OPERATING LLC 34 mo
2003-10 — 2018-07 JM COX RESOURCES, L.P. 178 mo
1993-01 — 2003-09 COX, JOHN L. 129 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA, INC.210,5002022-06-01