WINDHAM "11C"

Oil · District 08 · Lease #39889

Operator: SANDRIDGE EXPL. AND PROD., LLC

Fields: SPRABERRY (TREND AREA)

Cum Oil

121k BBL

Cum Gas

276k MCF

casinghead

Wells

3

Production

2010-05 — 2026-02

Peak Month

2012-05

Production History

Cum Oil: 120,601 BBL Cum Gas: 276,481 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,404 BBL/mo

Di (annual)

36.2%

b-factor

0.1

EUR

88,529 BBL

R-squared

0.733

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

2010-05 — 2010-09 SANDRIDGE EXPL. AND PROD., LLC 5 mo

Wells (3)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
9	42-329-38592	OVINTIV USA INC.	1	11,400	2013-03-20
5	42-329-36081	OVINTIV USA INC.	1	10,300	2008-10-10
3	42-329-33766	OVINTIV USA INC.	1	10,150	1997-05-27