UNIVERSITY-RATLIFF W58-7A

Oil · District 7C · Lease #21445

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

322k BBL

Cum Gas

973k MCF

casinghead

Wells

1

Production

2021-11 — 2026-04

Peak Month

2021-12

Production History

Cum Oil: 322,285 BBL Cum Gas: 972,842 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

17,312 BBL/mo

Di (annual)

79.2%

b-factor

0.2

EUR

327,894 BBL

R-squared

0.896

type

hyperbolic

Operator History (from monthly production reports)

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

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HPIONEER NATURAL RES. USA, INC.110,1442021-03-04