UNIVERSITY 58-19

Oil · District 7C · Lease #17342

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

221k BBL

Cum Gas

421k MCF

casinghead

Wells

4

Production

2010-11 — 2025-10

Peak Month

2013-01

Production History

Cum Oil: 220,816 BBL Cum Gas: 420,556 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,274 BBL/mo

Di (annual)

24.9%

b-factor

0.3

EUR

219,055 BBL

R-squared

0.749

type

hyperbolic

Operator History (from monthly production reports)

2010-11 — 2026-07 PIONEER NATURAL RES. USA, INC. 189 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5PIONEER NATURAL RES. USA INC.110,8002012-02-17
3PIONEER NATURAL RES. USA INC.110,8002011-07-21
6PIONEER NATURAL RES. USA, INC.210,8002011-05-24
1PIONEER NATURAL RES. USA INC.110,5002008-11-10