UNIVERSITY-RATLIFF W58-7D

Oil · District 7C · Lease #21434

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

280k BBL

Cum Gas

402k MCF

casinghead

Wells

1

Production

2021-06 — 2026-04

Peak Month

2023-02

Production History

Cum Oil: 279,527 BBL Cum Gas: 401,518 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

7,478 BBL/mo

Di (annual)

35.9%

b-factor

0.0

EUR

249,708 BBL

R-squared

0.465

type

exponential

Operator History (from monthly production reports)

2021-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 62 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HPIONEER NATURAL RES. USA, INC.110,1442021-03-05