UNIVERSITY-RATLIFF W58-7C

Oil · District 7C · Lease #21456

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

312k BBL

Cum Gas

796k MCF

casinghead

Wells

1

Production

2021-11 — 2026-04

Peak Month

2021-12

Production History

Cum Oil: 312,469 BBL Cum Gas: 796,331 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

18,448 BBL/mo

Di (annual)

87.1%

b-factor

0.2

EUR

317,555 BBL

R-squared

0.911

type

hyperbolic

Operator History (from monthly production reports)

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

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HPIONEER NATURAL RES. USA, INC.110,1442021-03-05