EARNEST T

Oil · District 08 · Lease #39222

Operator: OVINTIV USA INC.

Fields: SALLIE ANN (SPRABERRY-WOLFCAMP)

Cum Oil

80k BBL

Cum Gas

308k MCF

casinghead

Wells

2

Production

2008-06 — 2025-09

Peak Month

2012-11

Production History

Cum Oil: 79,856 BBL Cum Gas: 307,533 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,390 BBL/mo

Di (annual)

77.9%

b-factor

0.7

EUR

54,338 BBL

R-squared

0.553

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

2014-02 — 2015-01 ATHLON HOLDINGS LP 12 mo

2011-11 — 2014-01 MIDENERGY OPERATING, LLC 27 mo

2008-06 — 2011-10 KEYSTONE PETROLEUM GP LLC 41 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
2	42-135-41849	OVINTIV USA INC.	2	11,500	2012-05-23
1	42-135-39498	OVINTIV USA INC.	1	11,000	2008-04-23