IRVIN "A"

Oil · District 08 · Lease #33461

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

114k BBL

Cum Gas

342k MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

1993-03

Production History

Cum Oil: 113,703 BBL Cum Gas: 341,521 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

951 BBL/mo

Di (annual)

11.4%

b-factor

0.2

EUR

118,794 BBL

R-squared

0.898

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
2RPIONEER NATURAL RES. USA, INC.19,5001992-03-24
1PIONEER NATURAL RES. USA, INC.19,5001992-01-22