WILLIS "AA"

Oil · District 08 · Lease #37720

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

9k BBL

Cum Gas

23k MCF

casinghead

Wells

1

Production

2005-12 — 2008-11

Peak Month

2006-01

Production History

Cum Oil: 8,973 BBL Cum Gas: 22,932 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

460 BBL/mo

Di (annual)

55.2%

b-factor

0.0

EUR

9,980 BBL

R-squared

0.706

type

exponential

Operator History (from monthly production reports)

2005-12 — 2010-05 PIONEER NATURAL RES. USA, INC. 54 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA INC.19,6002005-04-13