Oil production from the Viking is concentrated in southwest Saskatchewan and southern and central Alberta, and occurs in northwest-southeast trending porous sandstone/conglomerate trends. Included are fields producing from the Viking, Bow Island and Basal Colorado.
There are 15 Viking oil fields (11 in Alberta and 4 in Saskatchewan) with Initial Established Recoverable Oil Reserves of over 1 x 106 m3 (6 MMBbls). The ten largest Viking oil fields, listed in order of Initial Established Recoverable Reserves, are shown in Table 1. Cumulative production data for Alberta are updated to the end of 1990 and for Saskatchewan to the end of 1989.
Table 1. Ten Largest Vikng Oil Fields (in units of 106m3).
|No.||Field||Formation||No. of Pools||Marketable Reserves||In-place Volume||Cumulative Production||Discovery Year|
Six of these fields are in south-central Alberta, and the Dodsland, Smiley-Dewar, Eureka and Kerrobert fields are in southwest Saskatchewan. All but three of the smaller Viking oil fields contain tight to medium gravity oil.
Total recoverable oil reserves in the Viking are estimated at 88.7 x 106m3, of which 66.8 x 106m3 have already been produced. Initial Established In-Place Volume of Viking oil reserves totals 577 x 106m3 There are 289 Viking oil pools, with an average 307 x 103m3 recoverable oil reserves / pool. Table 2 lists the distribution of Viking oil reserves according to In-Place Pool Size.
Table 2. Size Distribution of Viking Oil Pools (in units of 106m3).
|In-Place Pool Size Class||No. of Pools||Recoverable Reserves||Cumulative Production|
|less than 0.1||116||0.58||0.31|
|0.1 to 1||135||4.31||2.76|
|1.0 to 10||26||14.54||10.79|
|10.0 to 100||11||57.41||44.67|
|Total||289||88.74 x 106m3||66.85 x 106m3|