CLARK 1

Oil · District 08 · Lease #40873

Operator: OVINTIV USA INC.

Cum Oil

167k BBL

Cum Gas

659k MCF

casinghead

Wells

11

Production

2010-10 — 2026-04

Peak Month

2014-11

Production History

Cum Oil: 167,272 BBL Cum Gas: 658,712 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,321 BBL/mo

Di (annual)

277.0%

b-factor

1.7

EUR

174,620 BBL

R-squared

0.729

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
2011-10 — 2013-12 ATHLON FE OPERATING LLC 27 mo
2010-10 — 2011-09 ELEMENT PETROLEUM OPERATING, LLC 12 mo

Wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1208OVINTIV USA INC.110,5202014-09-30
1207OVINTIV USA INC.110,5002014-07-30
1206OVINTIV USA INC.110,6002014-05-01
8OVINTIV USA INC.210,3002013-10-01
7OVINTIV USA INC.111,5002012-03-05
6OVINTIV USA INC.211,0002012-01-30
5OVINTIV USA INC.111,0002011-08-05
4OVINTIV USA INC.111,0002011-06-16
3OVINTIV USA INC.111,0002010-11-08
2OVINTIV USA INC.111,0002010-11-03
1OVINTIV USA INC.111,0002010-07-29