UNIVERSITY ANDREWS 8

Oil // district 10 // lease#42366

op: XOG OPERATING LLC

cum_oil

44k BBL

cum_gas

0 MCF

wells

3

production

2011-09 — 2026-03

peak_month

2012-02

-- production_history

cum_oil: 43,847 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,136 BBL/mo

Di (annual)

57.9%

b-factor

0.4

EUR

38,366 BBL

R-squared

0.679

type

hyperbolic

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3XOG OPERATING LLC114,0002011-08-09
5XOG OPERATING LLC114,0002011-08-08
1XOG OPERATING LLC114,4002011-07-22
EOF // data source: Texas Railroad Commission // 2026