WINDHAM "T"

Oil · District 7C · Lease #3901

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

135k BBL

Cum Gas

606k MCF

casinghead

Wells

5

Production

1993-01 — 2026-04

Peak Month

2003-08

Production History

Cum Oil: 135,270 BBL Cum Gas: 605,799 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,307 BBL/mo

Di (annual)

23.2%

b-factor

0.4

EUR

104,296 BBL

R-squared

0.808

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
1993-12 — 1995-02 MIDPAR L.P. 15 mo
1993-01 — 1993-11 GRAHAM ROYALTY, LTD. 11 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4PIONEER NATURAL RES. USA, INC.19,2302003-02-24
5PIONEER NATURAL RES. USA, INC.29,2302003-02-24
3PIONEER NATURAL RES. USA, INC.19,1001985-11-07
142-461-01174PIONEER NATURAL RES. USA, INC.------
242-461-01205PIONEER NATURAL RES. USA, INC.------