The Allison Unit CO2-ECBM Pilot - A Reservoir and ... - Coal-Seq

9
REEVES, OUDINOT
Rates, Mcf/mo
2,000,000
1,800,000
1,600,000
1,400,000
1,200,000
1,000,000
800,000
600,000
400,000
200,000
16 producers, 4 injectors, 1 POW
Injection suspended, five wells
reopened
Five wells shutin
during initial injection
period
Gas Rate, Mcf/mo
CO2 Injection Rate, Mcf/mo
Well Gas Rate, Mcf/d
Line pressures reduced, wells recavitated, wells
reconfigured, onsite compression installed
Injection resumed
Peak @ +/- 57 MMcfd
+/- 3 1/2 Mcfd
4,000
3,500
3,000
2,500
2,000
1,500
1,000
500
0
Figure 3: Producing History, Allison Unit Study Area
Well #143
60000
2500
2300
50000
2100
40000
1900
1700
Pressure
30000
20000
10000
0
Jan-89
Jul-89
Jan-90
Jul-90
Jan-91
Jul-91
Jan-92
Jul-92
Jan-93
Jul-93
Jan-94
Jul-94
Jan-95
Jul-95
Jan-96
Jul-96
Jan-97
Jul-97
Jan-98
Jul-98
Jan-99
Jul-99
Jan-00
Jul-00
Jan-89
Jul-89
Jan-90
Jul-90
Jan-91
Jul-91
Individual Well Gas Rate, Mcf/d
Jan-92
Jul-92
Jan-93
Jul-93
Jan-94
Jul-94
Jan-95
Jul-95
Jan-96
Jul-96
Jan-97
Jul-97
Jan-98
0
Jul-98
Jan-99
Jul-99
Jan-00
Jul-00
Jan-01
Jul-01
Date
Rate
CO2, Mcf/mo
1500
BHP, psi
1300
1100
900
700
500
Date
Figure 4: Injector Well # 143 Injection and Pressure History