ULVESTAD-BIRKHEAD E20L

Oil · District 08 · Lease #60139

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

341k BBL

Cum Gas

555k MCF

casinghead

Wells

1

Production

2023-06 — 2026-04

Peak Month

2024-03

Production History

Cum Oil: 341,381 BBL Cum Gas: 555,079 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

27,880 BBL/mo

Di (annual)

205.5%

b-factor

0.8

EUR

544,811 BBL

R-squared

0.887

type

hyperbolic

Operator History (from monthly production reports)

2023-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 38 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12HPIONEER NATURAL RES. USA, INC.110,5142023-03-31