ULVESTAD-BIRKHEAD E20H

Oil · District 08 · Lease #51892

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

329k BBL

Cum Gas

1.1M MCF

casinghead

Wells

1

Production

2019-02 — 2026-04

Peak Month

2019-05

Production History

Cum Oil: 329,461 BBL Cum Gas: 1,126,920 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

26,538 BBL/mo

Di (annual)

156.7%

b-factor

0.3

EUR

290,407 BBL

R-squared

0.897

type

hyperbolic

Operator History (from monthly production reports)

2019-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 90 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8HPIONEER NATURAL RES. USA, INC.110,4502018-07-17