TARZAN STANDEFER 9

Oil · District 08 · Lease #35803

Operator: SANDRIDGE EXPL. AND PROD., LLC

Fields: SPRABERRY (TREND AREA)

Cum Oil

284k BBL

Cum Gas

893k MCF

casinghead

Wells

6

Production

1998-05 — 2026-04

Peak Month

2014-06

Production History

Cum Oil: 283,921 BBL Cum Gas: 892,716 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,458 BBL/mo

Di (annual)

53.4%

b-factor

0.6

EUR

260,238 BBL

R-squared

0.691

type

hyperbolic

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

2014-01 — 2015-01 ATHLON HOLDINGS LP 13 mo

2010-10 — 2013-12 ATHLON ENERGY OPERATING LLC 39 mo

2010-01 — 2010-09 SANDRIDGE EXPL. AND PROD., LLC 9 mo

2003-08 — 2009-12 FOREST OIL CORPORATION 77 mo

2003-07 — 2003-07 OXY USA WTP LP 1 mo

2002-01 — 2003-06 BP AMERICA PRODUCTION COMPANY 18 mo

1998-05 — 2001-12 ARCO PERMIAN 44 mo

Wells (6)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
4	42-317-39020	OVINTIV USA INC.	1	11,350	2013-11-26
5	42-317-39021	OVINTIV USA INC.	1	11,350	2013-11-26
3	42-317-38631	OVINTIV USA INC.	1	11,400	2013-04-25
2	42-317-37051	OVINTIV USA INC.	2	11,750	2011-08-15
1	42-317-34171	OVINTIV USA INC.	1	9,500	1998-03-12
901	42-317-34171	OVINTIV USA INC.	1	9,500	1998-03-12