WILLIS -B-

Oil · District 08 · Lease #22584

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

67k BBL

Cum Gas

280k MCF

casinghead

Wells

7

Production

1993-01 — 2015-09

Peak Month

1994-08

Production History

Cum Oil: 67,454 BBL Cum Gas: 280,041 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

598 BBL/mo

Di (annual)

10.7%

b-factor

0.0

EUR

66,557 BBL

R-squared

0.743

type

exponential

Operator History (from monthly production reports)

1997-09 — 2022-10 PIONEER NATURAL RES. USA, INC. 302 mo
1995-03 — 1997-08 PARKER & PARSLEY DEVELOPMENT L.P 30 mo
1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5PIONEER NATURAL RES. USA INC.19,2251988-04-06
6PIONEER NATURAL RES. USA INC.19,2251988-04-06
2XPIONEER NATURAL RES. USA INC.19,4001983-02-04
142-329-30175PIONEER NATURAL RES. USA INC.------
1 W42-329-00577PIONEER NATURAL RES. USA INC.------
342-329-30228PIONEER NATURAL RES. USA INC.------
442-329-30261PIONEER NATURAL RES. USA INC.------