WINDHAM -H-

Oil · District 08 · Lease #31556

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

113k BBL

Cum Gas

153k MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

1994-08

Production History

Cum Oil: 113,093 BBL Cum Gas: 153,259 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

694 BBL/mo

Di (annual)

14.1%

b-factor

0.7

EUR

104,963 BBL

R-squared

0.485

type

hyperbolic

Operator History (from monthly production reports)

1997-09 — 2026-07 PIONEER NATURAL RES. USA, INC. 347 mo
1995-03 — 1997-08 PARKER & PARSLEY DEVELOPMENT L.P 30 mo
1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA, INC.18,7251987-10-16
2PIONEER NATURAL RES. USA, INC.18,7251987-10-15