< leases

ANDREWS UNIVERSITY 31

Oil · District 08 · Lease #40557

Operator: WILLIAMS, CLAYTON ENERGY, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

85k BBL

Cum Gas

292k MCF

casinghead

Wells

2

Production

2010-10 — 2026-04

Peak Month

2011-02

Production History

Cum Oil: 84,780 BBL Cum Gas: 292,353 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,122 BBL/mo

Di (annual)

19.4%

b-factor

0.2

EUR

85,418 BBL

R-squared

0.771

type

hyperbolic

Operator History (from monthly production reports)

2024-06 — 2026-07 SABALO II OPERATING, LLC 26 mo
2021-09 — 2024-05 MONTROSE OPERATING LLC 33 mo
2017-10 — 2021-08 THRONE PETROLEUM RESOURCES LLC 47 mo
2017-04 — 2017-09 NBL PERMIAN LLC 6 mo
2010-10 — 2017-03 WILLIAMS, CLAYTON ENERGY, INC. 78 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
242-003-44089SABALO II OPERATING, LLC111,7502012-03-21
142-003-41685SABALO II OPERATING, LLC212,0002010-05-11