THORNBERRY -13-

Oil · District 08 · Lease #26820

Operator: SUNRAY ENERGY, INC.

Cum Oil

100k BBL

Cum Gas

86k MCF

casinghead

Wells

10

Production

1993-01 — 2026-04

Peak Month

2011-05

Production History

Cum Oil: 99,694 BBL Cum Gas: 86,143 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,548 BBL/mo

Di (annual)

137.9%

b-factor

1.6

EUR

109,015 BBL

R-squared

0.890

type

hyperbolic

Operator History (from monthly production reports)

2025-09 — 2026-07 BCE-MACH III LLC 11 mo
2019-07 — 2025-08 SABINAL ENERGY OPERATING, LLC 74 mo
2019-02 — 2019-06 DIAMONDBACK E&P LLC 5 mo
2009-08 — 2019-01 ENERGEN RESOURCES CORPORATION 114 mo
2004-11 — 2009-07 RANGE PRODUCTION COMPANY 57 mo
1994-09 — 2004-10 SUNRAY ENERGY, INC. 122 mo
1993-01 — 1994-08 CAPROCK OPERATING, INC. 20 mo

Wells (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12BCE-MACH III LLC14,9002011-07-21
10BCE-MACH III LLC14,9002011-01-13
11BCE-MACH III LLC14,9002011-01-13
6BCE-MACH III LLC14,9002011-01-13
8BCE-MACH III LLC14,9002010-05-21
9BCE-MACH III LLC14,9002010-05-21
4BCE-MACH III LLC14,9501981-08-04
7BCE-MACH III LLC14,9501981-08-04
3BCE-MACH III LLC14,9501981-07-29
2BCE-MACH III LLC14,9501981-06-30