< leases

NAIL -85-

Oil · District 08 · Lease #30704

Operator: PIONEER NATURAL RES. USA, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

52k BBL

Cum Gas

155k MCF

casinghead

Wells

2

Production

1993-01 — 2010-11

Peak Month

1995-05

Production History

Cum Oil: 51,539 BBL Cum Gas: 155,392 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

733 BBL/mo

Di (annual)

19.8%

b-factor

0.1

EUR

49,338 BBL

R-squared

0.834

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2022-02 PIONEER NATURAL RES. USA, INC. 13 mo
2017-05 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 45 mo
2016-05 — 2017-04 DE OPERATING LLC 12 mo
2011-01 — 2016-04 LEGACY RESERVES OPERATING LP 64 mo
2009-01 — 2010-12 COG OPERATING LLC 24 mo
2001-04 — 2008-12 HENRY PETROLEUM LP 93 mo
1993-01 — 2001-03 HENRY PETROLEUM CORP. 99 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
242-317-30753PIONEER NATURAL RES. USA INC.110,5971989-08-08
142-317-33304PIONEER NATURAL RES. USA INC.19,3501985-12-05