ULVESTAD

Oil · District 08 · Lease #32041

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

175k BBL

Cum Gas

556k MCF

casinghead

Wells

3

Production

1993-01 — 2026-04

Peak Month

2015-03

Production History

Cum Oil: 174,921 BBL Cum Gas: 556,120 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,801 BBL/mo

Di (annual)

34.5%

b-factor

0.4

EUR

155,000 BBL

R-squared

0.774

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 (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5PIONEER NATURAL RES. USA, INC.111,6002014-09-29
2PIONEER NATURAL RES. USA, INC.211,6002013-04-09
1PIONEER NATURAL RES. USA, INC.19,5501988-07-28