UNIVERSITY 20-B

Oil // district 10 // lease#35674

op: PIONEER NATURAL RES. USA, INC.

cum_oil

279k BBL

cum_gas

0 MCF

wells

2

production

1997-11 — 2026-03

peak_month

2022-10

-- production_history

cum_oil: 278,850 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

9,619 BBL/mo

Di (annual)

301.7%

b-factor

1.0

EUR

192,358 BBL

R-squared

0.937

type

hyperbolic

-- wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PARKER & PARSLEY DEVELOPMENT L.P311,8002012-09-10
1HENERGEN RESOURCES CORPORATION111,5002012-02-28
EOF // data source: Texas Railroad Commission // 2026