UNDERWOOD -B-

Oil · District 08 · Lease #25804

Operator: SUNRAY ENERGY, INC.

Fields: BLOCK A-34 (SAN ANDRES)

Cum Oil

237k BBL

Cum Gas

170k MCF

casinghead

Wells

6

Production

1993-01 — 2026-04

Peak Month

2018-03

Production History

Cum Oil: 236,703 BBL Cum Gas: 169,640 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

8,818 BBL/mo

Di (annual)

70.8%

b-factor

0.2

EUR

186,688 BBL

R-squared

0.753

type

hyperbolic

Operator History (from monthly production reports)

2012-06 — 2026-07 RING ENERGY, INC. 170 mo

2012-05 — 2012-05 SUNRAY ENERGY, INC. 1 mo

2000-06 — 2012-04 MIOCENE OIL & GAS, LTD. 143 mo

1996-08 — 2000-05 PHARAOH OIL & GAS, INC. 46 mo

1993-01 — 1996-07 MIOCENE OIL & GAS, INC. 43 mo

Wells (6)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
3H	42-003-47640	RING ENERGY, INC.	1	5,100	2017-09-08
2H	42-003-47609	RING ENERGY, INC.	1	4,800	2017-07-28
1H	42-003-47484	RING ENERGY, INC.	2	4,800	2017-02-07
3	42-003-32505	RING ENERGY, INC.	1	4,950	1980-11-05
2	42-003-32366	RING ENERGY, INC.	1	4,750	1980-06-11
1	42-003-32154	RING ENERGY, INC.	1	4,850	1979-11-28