WINDHAM "D"

Oil · District 7C · Lease #10653

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

102k BBL

Cum Gas

494k MCF

casinghead

Wells

2

Production

1993-01 — 2025-09

Peak Month

2010-03

Production History

Cum Oil: 101,623 BBL Cum Gas: 493,942 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,284 BBL/mo

Di (annual)

36.0%

b-factor

0.3

EUR

60,343 BBL

R-squared

0.788

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
2PIONEER NATURAL RES. USA INC.111,0002009-11-13
1PIONEER NATURAL RES. USA INC.19,2501984-02-03