< leases

SHAUNA 9

Oil · District 7C · Lease #8639

Operator: PIONEER NATURAL RES. USA, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

54k BBL

Cum Gas

245k MCF

casinghead

Wells

2

Production

1993-01 — 2019-06

Peak Month

1994-03

Production History

Cum Oil: 53,716 BBL Cum Gas: 244,506 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

907 BBL/mo

Di (annual)

53.9%

b-factor

0.7

EUR

48,570 BBL

R-squared

0.849

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 66 mo
2013-12 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 86 mo
2006-04 — 2013-11 CHEVRON MIDCONTINENT, L.P. 92 mo
2002-01 — 2006-03 HEC PETROLEUM, INC. 51 mo
1994-12 — 2001-12 HALLWOOD PETROLEUM, INC. 85 mo
1993-01 — 1994-11 HALLWOOD ENERGY CORPORATION 23 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
242-461-33457PIONEER NATURAL RES. USA INC.19,3001993-11-12
142-461-31634PIONEER NATURAL RES. USA INC.19,8001980-08-26