UNIVERSITY-RATLIFF W58-7F

Oil · District 7C · Lease #21455

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

350k BBL

Cum Gas

857k MCF

casinghead

Wells

1

Production

2021-11 — 2026-04

Peak Month

2023-02

Production History

Cum Oil: 349,993 BBL Cum Gas: 857,091 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

19,873 BBL/mo

Di (annual)

138.4%

b-factor

0.7

EUR

466,521 BBL

R-squared

0.825

type

hyperbolic

Operator History (from monthly production reports)

2021-11 — 2026-07 PIONEER NATURAL RES. USA, INC. 57 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6HPIONEER NATURAL RES. USA, INC.110,1442021-03-05