HOLT RANCH

Oil · District 08 · Lease #33520

Operator: REEF EXPLORATION, INC. (A-1)

Fields: REEF EXPLORATION (DEVONIAN)

Cum Oil

661k BBL

Cum Gas

572 MCF

casinghead

Wells

5

Production

1993-01 — 2023-09

Peak Month

1994-01

Production History

Cum Oil: 661,059 BBL Cum Gas: 572 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

10,467 BBL/mo

Di (annual)

21.6%

b-factor

0.0

EUR

581,535 BBL

R-squared

0.711

type

exponential

Operator History (from monthly production reports)

2020-02 — 2026-07 OVINTIV USA INC. 78 mo

2015-02 — 2020-01 ENCANA OIL & GAS(USA) INC. 60 mo

2014-06 — 2015-01 ATHLON HOLDINGS LP 8 mo

2013-05 — 2014-05 HIBERNIA RESOURCES, LLC 13 mo

2005-02 — 2013-04 H & M RESOURCES, LLC 99 mo

1993-01 — 2005-01 REEF EXPLORATION, INC. (A-1) 145 mo

Wells (5)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
2	42-317-33918	OVINTIV USA INC.	2	14,000	1996-04-24
2R	42-317-33918	OVINTIV USA INC.	2	14,000	1996-04-24
2 A	42-317-34005	OVINTIV USA INC.	1	12,500	1995-04-21
3	42-317-33943	OVINTIV USA INC.	1	13,500	1993-08-26
1	42-317-33908	OVINTIV USA INC.	1	13,500	1992-03-06