UNIVERSITY "58-31"

Oil · District 7C · Lease #16591

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

22k BBL

Cum Gas

109k MCF

casinghead

Wells

2

Production

2008-04 — 2019-12

Peak Month

2008-05

Production History

Cum Oil: 21,744 BBL Cum Gas: 108,955 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

903 BBL/mo

Di (annual)

66.5%

b-factor

0.3

EUR

23,093 BBL

R-squared

0.915

type

hyperbolic

Operator History (from monthly production reports)

2008-04 — 2020-07 PIONEER NATURAL RES. USA, INC. 148 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA INC.19,6002008-01-15
4PIONEER NATURAL RES. USA INC.19,5752007-11-26