CLARK 12

Oil // district 10 // lease#46744

op: OVINTIV USA INC.

cum_oil

171k BBL

cum_gas

0 MCF

wells

8

production

2015-02 — 2026-03

peak_month

2015-04

-- production_history

cum_oil: 171,424 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

5,566 BBL/mo

Di (annual)

84.8%

b-factor

0.7

EUR

201,990 BBL

R-squared

0.932

type

hyperbolic

-- wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1211EENCANA OIL & GAS(USA) INC.110,5252015-08-14
1209ENCANA OIL & GAS(USA) INC.210,5482015-02-24
1201ENCANA OIL & GAS(USA) INC.210,2502015-01-30
1210ENCANA OIL & GAS(USA) INC.210,5222015-01-27
1208ATHLON HOLDINGS LP110,5202014-09-30
1207ATHLON HOLDINGS LP110,5002014-07-30
1206ATHLON HOLDINGS LP110,6002014-05-01
1202ATHLON FE OPERATING LLC110,3002013-12-03
EOF // data source: Texas Railroad Commission // 2026