Chapter 23 Table Oil Production from the Cardium
Oil production from the Cardium is concentrated in southwestern Alberta adjacent to the disturbed belt. Pembina, Canada's largest oil field, produces from the Cardium and is truly a giant oil field.
There are 14 Cardium oil fields with Initial Established Recoverable Oil Reserves of over 1 x 106 m3 (6 MMBbls). The ten largest Cardium oil fields, listed in order of Initial Established Recoverable Reserves, are shown an Table 1. Cumulative production data for Alberta are updated to the end of 1990.
Table 1. Ten Largest Cardium Oil Fields (in units of 106m3).
|No.||Field||Formation||No. of Pools||Marketable Reserves||In-place Volume||Cumulative Production||Discovery Year|
All of these fields occur in stratigraphic traps, in sandstones and conglomerates deposited in thin sheets as at Pembina or an elongate marine scours as at Garrington and Crossfield. All fields contain light to medium gravity oil.
Total recoverable oil reserves in the Cardium are eswmated at 305.0 x 106m3, of which 220.9 x 106m3 have already been produced. Pembina alone comprises over 75 percent of the recoverable reserves. Initial Established In-Place Volume of Cardium oil reserves totals 1648 x 106m3. There are 297 Cardium pools in 42 fields, with an average 1027 x 103m3 recoverable oil reserves/pool When Pembina is deleted from this calculation, the average drops to 266 x 103m3. Table 2 lists the distribution of Cardium oil reserves according to In Place Pool Size.
Table 2. Size Distribution of Cardium Oil Pools (in units of 106m3).
|In-Place Pool Size Class||No. of Pools||Recoverable Reserves||Cumulative Production|
|less than 0.1||76||0.40||0.19|
|0.1 to 1||174||5.04||2.54|
|1.0 to 10||37||20.25||12.74|
|10.0 to 100||8||22.59||15.47|
|100.0 to 1000||1||25.73||17.93|
|Total||297||305.00 x 106m3||220.86 x 106m3|