UNIVERSITY '4-20'

Oil · District 7C · Lease #18072

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

338k BBL

Cum Gas

654k MCF

casinghead

Wells

2

Production

2012-09 — 2026-04

Peak Month

2012-10

Production History

Cum Oil: 338,471 BBL Cum Gas: 653,649 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,529 BBL/mo

Di (annual)

255.1%

b-factor

2.0

EUR

460,874 BBL

R-squared

0.518

type

hyperbolic

Operator History (from monthly production reports)

2012-09 — 2026-07 PIONEER NATURAL RES. USA, INC. 167 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HPIONEER NATURAL RES. USA, INC.38,8002012-05-22
2HPIONEER NATURAL RES. USA, INC.38,4002012-03-02